CP-5131/GYC or PSG-9 Message Terminal

CHS-2 Handheld Terminal Unit (HTU)

© Brooke Clarke 2008 - 2014

Fig 1 Side View
PSG-9? Connectors

Fig 2 Screen and Keyboard
PSG-9? Front it's
                less than 10" wide

Fig 3 Connector Assembly
PSG-9 Connector
                Close Up

Fig 4 Keyboard
PSG-9 Keyboard

Fig 5 Two PCMCIA sockets & Battery compartment
PSG-9 pcmcia
                  & Battery Compartments

Fig 6 Top with cover closed
PSG-9 Top Closed

PSG-9 my second
Dec 2008 - this is another one that has slightly different looking top cover (extra Joystick? in upper right).
Marked: 13973ASSY420080-107 on the back of the keyboard
Marked: 13973ASSY430001-111 on the bottom of the case
The rubber bumpers are missing in the upper left and right corners as is one of the screws on the right side.


Identification & Markings
    Litton DC/DCPowerstick
    Start Up
    CCFL Back Light
    Operating System
    PCMCIA Hard Drive
    PCMCIA to PCI Adapter
Storage Formats
Connectors - WHAT IS J2?
Controls & Indicators
CA-5033/UYC Printer
Vehicle Mount
1 Side View
2 Screen and Keyboard
3 Connector Assembly
4 Keyboard
5 Two PCMCIA sockets & Bat comp
6 Top with cover closed
7 LCD after top removed
8 bottom of keyboard seen from inside
9 Back of connector sub assembly

10 Cavity in main box
11Battery Socket
12 Powerstick Con
13 Powerstick side veiw
14 Powerstick plug end
15 Empty Box
16 Motherboard Assy
17 CCFL circuit
18 Card Cage
19 Back Up battery
20 Internal Hard Drive
Fig 20A BIOS load 4 pin con
21 CPU Board
22 Ext PCMCIA Socket
23 Internal Hard Drive Dir
24 Viper 170 MB Drive
25 Viper Drive in PCI adap
26 Hard Drive Stack
27 Compact Flash
29 Laptop IDE
30 Desktop IDE
31Viper Drive in  IDE Adp
32 External Power Wire
33 Printer Battery Compartment
34 Printer Test Strip
40 Mount
41 Mount
42 Mount


This is a small Handheld Terminal Unit (HTU).  It's part of the military Common Hardware Software program.  The idea being that computers can be customized by what software they run.  This is a 486 class CPU with 32 MB ram that uses PCMCIA for all the disks thus allowing for removable disks, probably as a security measure.   The DRS Technoligies Scorpion is the 2008 version.
Comparing the PSG-9 and the Scorpion

9 x 7 x 3.2
9 x 7 x 3.2
Wt lbs
Disp pix
32 MB
2 GB
DC Ext Pwr
8 V
28 V

These showed up on eBay for under $100.  Looking for any info on it.  Let me know.

There are two PCMCIA slots on the other side, one about 3.5" deep and the other about 5.5" deep.
Is there a way to load Windows in a PCMCIA card so the computer will boot from it?
There is a small PCMCIA internal hard drive (not in the externally accessible slots).
screen size is 6 1/8" wide by 4 1/2" high.
When an external monitor is used there is color info.  Don't yet know about the PSG-9 LCD.

Note the adjustments for LCD brightness and contrast work on the LCD hardware, not the external monitor.

5 May 2008 - I think the reason these computers were surplused is because they have an internal BIOS battery.  That it's soldered to the mother board is even worse.  And that it's not available is much worse.  The cost to the government to have a qualified person open the computer and install the BIOS battery would be staggering.  Afte the battery was installed then  the BIOS settings need to be restored.  Note when the BIOS battery goes bad you loose the use of the internal hard drive.
Dead BIOS Battery
The problem is the BIOS battery died.  That prevents access to the internal hard drive which contains DOS. 
  • The battery is no longer available.
  • The Cylinders, Heads and Sectors/Track (CHS) is unknown.

 12 May 2008 - I've received an email indicating that the switch shown in Fig 20  is to zeroize the BIOS.  When I found the switch I cycled it a few times to be sure the contacts were not oxidized and don't see how it could change anything since the BIOS battery is dead.  But now the BIOS does not run at power up. 
Also that J17, the 4 pin connector you can see inside the external PCMCIA access hole is for loading the BIOS.  If you know more please tell me.

BIOS Updating & the Switch & J17

"The switch on most motherboards "to zeroize the BIOS" is usually there to allow a new BIOS image to be loaded into the BIOS EPROM. This is usually done off of a floppy with an appropriate loader utility and the new BIOS image on the floppy. Typical sequence is to power down, insert and boot off of the BIOS imaging floppy, run the utility on the floppy and load the new (presumably updated) BIOS into the EPROM; then power down, reset the switch jumper/back to normal, and power up and boot with the new BIOS intact. I would expect the four pin connector to be some form of serial interface (not necessarily RS-232 nor RS-449, possibly just TTL levels) used to load the EPROM on board from some external computer.

I've not seen a true "zeroizing" BIOS switch/jumper, and with most commercial motherboards, the switch only enables BIOS loading, it actually doesn't zero out the old BIOS automatically.

This implies that you would need the utility, the BIOS image, and the interface spec to successfully update the BIOS."
Hope this is of some help.

Best Regards,

Identification & Markings

13973 ASSY 420001-105 SERNO 50336
13975 ASSY 420080-103 SERNO 1989

A Canadian eBay auction shows:

The Canadian nomenclature CP-5131/GYC would follow the NATO naming scheme which would translate:
General Ground
Data Processing

The PSG-9 nomenclature would translate as:
Special or Combination
Fire Control


Geoffrey Bunza wrote:
Comments on the PSG-9:
The PSG-9 uses a BA-5600  which has an 8.4V has center contact NEGATIVE outside contacts (half moons) are POSITIVE
& Longer cylinder 3 D LiSO2 cells vs. the BA-5800  which has 6.0V has center  contact POSITIVE and outside circular contact NEGATIVE
& Shorter cylinder 2 D LiSO2 cells.

 >From memory:
--The unit turns on by pressing both buttons on the front panel in the upper left and right simultaneously (hold down until turn on).
--If you have a bad screen you can connect a VGA screen to its 15 pin subminiature D connector.
--The small metal circular connectors are "Lemo" connectors (Brooke comment: I don't think so, Lemo connectors use a push on, pull off mechanism, not threads)
--It is essentially a slow PC architecture, the cardbus (PCMCIA) system is standard, but the boot setup is not, and can be configured by going into the BIOS setup (usual) (I don't remember the key sequence to get there)
--As a PC with only PCMCIA card disks (which includes the internal hard disk, by the way--only accessible by taking the entire thing apart) you can boot off of an insertable disk by first reconfiguring the BIOS to select it to boot. The PCMCIA insertable disk must be loaded elsewhere: find a laptop with a PCMCIA slot, and a floppy and/or a CD. Get a 1 or more GB PCMCIA drive or compact flash with PCMCIA adapter, load in your new found laptop, and put a bootable DOS image of system on the PCMCIA disk; then copy your OS of choice, that is likely the INSTALLATION CD, onto the PCMCIA disk. Insert the PCMCIA disk into the PSG-9, boot DOS or equivalent, and then start your OS installation. This needs to be done so your OS installer can recognize the internal configuration of the PSG-9 hardware.

If you can't boot DOS you have other problems-- either hardware or BIOS settings, or you didn't create a bootable PCMCIA disk.

Hope this helps.


There may be a way to either find or add an external power connection to the existing connector pins.  So opening up is the next step.

When the lid is removed what's under it is the LCD. 
A glass panel comes off with the lid.
To the right of the screen is the inverter transformer that's part of the CCFL backlighting.
This is looking up from inside when the keyboard is folded flat.
Fig 7 LCD after top removed

Fig 8 bottom of keyboard seen from inside
PSG-9 back
                    side of the keboard and LCD screen

Fig 9 Back of connector sub assembly
PSG-9 back
                    side of conector sub assembly

Fig 10 Cavity in main box behind connector sub assembly
PSG-9 cavity
                    in main box behind connector sub assembly

 I didn't notice any alien beings when taking these photo, but Fig 7 seems to show the reflection of one looking over my shoulder?  Fig 10 is the most interesting since there's access to the bottom of the battery compartment.  More later after the Fluke 87 does it's thing.

To remove the motherboard assembly after the top and connector assemblies have been removed, just lift it out.
It is possible to removve the motherboard addembly with the connector assembly installed, the ribbon cables that connect to the connectors are long enough.
Fig 15 Empty Box
PSG-9 empty box
Fig 16 Motherboard Assy
                  Motherboard Assembly removed from box
Red wire soldered to one of the 4 positive battery terminals.
Black wire has a crimped ring tongue terminal with a 2-56 screw holding it.
The BIOS setting back up battery measures 0 volts.  The ICs have 1994 and 1995 date codes
so it's (2008 - 1995) about 13 years old.  It's an ER10/28 3.6 Volt 1/2 length AAA.  I doubt a AA
diameter will fit this corner that's beside the main battery compartment.
The smaller board with one of the flex circuits connected is the power supply.
There's another same size board under it.
Note the black feet on the back side to protect the face of the LCD screen when it's set down.
The small white connector on the main board near the upper left corner is probably the audio
like would be connected to a CD player.
Fig 18 Card Cage Folded open exposing internal Hard Drive
The Viper drive on the right I've added.
The stock hard drive has the white label.
CPU board on left of fled cables.
Card Cage Folded to
                  Reveal Mother Board
Fig 19 Back Up battery 1/2 AAA
Card Cage Folded to Reveal CPU board w/ sheetmetal cover in place & Mother Board
Internal hard drive is PCMCIA Viper 260 MB marked "unclassified on white sticker
CPU, dead BIOS battery and just out of photo at right front mystry switch.
Fig 20 Closer View of Internal Hard Drive (left with white paper label)
and added Viper Drive (or right)
PSG-9 Mother board
Fig 21 CPU Board
PSG-9 CPU Board
                  w/o sheetmetal cover
Mother board                                                       ^
Do Not Operate Switch, Do Not Seperate Cards From Flex Connector.
Doing either of the above may disable BIOS.
PSG-9 CPU Board w/o sheetmetal cover
Fig 20A PSG-9 BIOS load 4 pin connector
                load 4 pin connector?

This may be the connector needed to load the BIOS.  It's very close to the switch shown in Fig 20 and the backup battery.

Fig 22 Short External PCMCIA Socket
                  Locked into External PCMCIA Slot No. ?

Drive Locked into External PCMCIA Slot No. ?
The metal tab should release the drive, but it's broken and the drive can not be removed.

Fig 23 Internal Viper 260 MB Hard Drive Directory
PSG-9 Internal Hard Drive Directory


The battery is the BA-5600/U which is a negative center contact stick with three LiSO2 cells or about 9 volts.
Saft data sheet for BA-5600/U, shows it's for the AN/PSC-2.

In addition to the dumb BA-5600 there are apparently some smart battery options for this computer.

BB-741/GYC, BT70341, (it's not clear what these numbers are: 420324-100, 842558-1).
In addition to the center negative contact and two half moon positive contacts there are four additional contacts:

C = +12
The BB-2600 (NSN 6140-01-467-5853, BT-70443) is a Li-Ion rechargeable. 
It has been replaced by the BB-2600A/U (NSN 6140-01-490-4311, BT-70743)
It does not have the ABCD smart battery contacts.  The gas gauge and charging contacts are on the cap end with the regular discharge contacts on the other end.

Fig 11 Battery Socket
PSG-9 Contacts that
          mate with batteryLooking into the battery compartment.

The center contact is negative and is connected to the chassis, i.e. is ground and shows up on the metal case and a lot of places on the connectors.
One or more of the 4 contacts at the bottom will contact the half moon positive terminals no matter at what rotation a dumb battery is installed.

The four contacts at the top in a square pattern are recessed below the face and so will not be touched by a dumb battery. When a smart battery is installed it needs to be rotated so the projection matches the pocket.

Just to the left of this photo is the wall that's shown above in Fig 2 on the top.  The three dark green square shapes are thin panels that will rupture if the battery vents or explodes.  Just inside each of them the metal frame has eight holes that hopefully will allow gas to pass but stop large chunks from flying out.  There are some dead lined BA-5600 batteries that have exploded and for them the self discharge switch should not be pressed.

This is the same system used on laptop computers where the gas gauge has a serial port to report the batteries state of charge.  So I suspect the cells are Li-Ion.  If the battery can be charged while in the PSG-9 then there must be an external power input connector, WHERE IS THE EXTERNAL POWER INPUT? let me know
This may be the first military battery to have a smart gas gauge.  Many of them have LCD bar graph indicator gas gauges.

The M455-1/GRC-206 Power Source has an 8 Volt output for powering either this device or similar 8 volt computer type equipment.

Backup Battery

There is a 3.6 Volt  1/2 size AAA (9.7 mm dia x 25 mm long)  lithium backup battery with leads soldered to the motherboard.  See Fig 16.  This one is completely dead.  It's required if you want the BIOS settings to be remembered.  And that's required to set the hard drive Cylinders, Heads and Sectors.

Litton Data Systems DC/DC Powerstick p/n: 08YX1-417985-101

Fig 12 Powerstick Connector & Heat Sink
Litton DC/DC

Fig 13 Powerstick side veiw
Litton Power
                  Stick replaces BA-5600 battery

Fig 14 Powerstick plug end
Litton DC/DC

External end with connector for military
vehicle power (20 to 30 VDC) which when
dropped down to 8 will dissipate a lot
of power if done with a linear regulator.
This looks like a linear regulator with all
the heat sinking and metal construction.
The cap at the left screws into the PSG-9 so the normal
battery cover is left hanging on it's lanyard.
This end looks like the battery
It does not contain the smart
contacts so it's dumb.
photos courtesy of Kurt Lesser
Kurt called this a vehicle battery adapter but I would call it a vehicle power adapter meaning there's no battery involved.
Mike Murphy sells the power stick.
I found the one below on eBay for a very reasonable price.
Installed in PSG-9
connextor is marked : MS3470W8-33P Aero 9930-1
positions for 3 male pins but only A & B installed.
Litton Data
                  Systems DC/DC Powerstick p/n: 08YX1-417985-101 in
Next to PSG-9
Litton Data
                  Systems DC/DC Powerstick p/n: 08YX1-417985-101 outside

J2 External Power Connector

Although J2 is in the same connector family as J3 they are keyed differently so you can not plug the external power cable (J2) into the keyboard/mouse jack (J3).
See Connectors below for photo of J2.

Start Up

8 March 2008 - With 9 volts applied to the battery terminals (soldered red wire to one of the four battery socket pins after removing the connector sub assembly, Fig 10).  To the upper right and left of the LCD are a couple of momentary rocker switches (Fig 2)that have two bars at the top and one bar at the bottom.   When both of the bottom bars are pressed and held the computer boots up:
The green POWER LED turns on and the other LEDs do a dance. The LCD is showing a PhoenixBIOS DOS boot release 1.13.  At first I thought the LCD was dead, but when looking at a steep angle from below you can see the text.  Optimum viewing angle is 45 degrees below square on.  But it needs a contrast adjustment.

 Should the Fn+F4 and Fn+F5 controls work in the PhoenixBIOS or is this part of some higher level language (Fig 4 Keyboard)?
Note:  on the keyboard there is a white box surrounding each key.  Those icons without a box are just labels above the function keys.  The upper right key toggles the keyboard illumination on and off.  But to see the screen the desk lamp is supplying the light.

Maybe the CCFL lamp is bad????

PhoenixBIOS(tm)A486 Version 1.13
Copyright (C) 1985-1992 Phoenix Technologies, Ltd.
All Rights Reserved
    Release 1.13
486 DX2
37C51 Revision: V1.2
XICOR Revision: 1.13
Initializing PCMCIA Disk Interface
Initializing IDE Disk Interface
Fixed Disk 1 Failure
Performing Cache Test & Configuration
Cache 1 Enabled
Invalid configuration information - please run SETUP program
Press the F1 key to continue, F2 to run the setup utility

FDI Modem Presence Check:
Missing operating system

screen above
Phoenix SETUP Utility (Version 1.00)
(c) Phoenix Technology Ltd. 1985, 1992  All Rights Reserved
page 1 of 2
** Standard System Parameters **
The time and date can be set.  <shift><+> works, <-> works..
Diskette A: Not Installed   Cyl   Hd   Pre   LZ   Sec   Size
Boot Disk 0:   Type  3      615    6    300    615    17    30
         Disk 1    Type 1        306    4    120    395    17    10
Internal Disk:   Boot Disk 0
Base Memory:   640 KB              PCMCIA Slot:      Slot 2
Extended Memory   31744KB     PCMCIA HDD Type: Ministor
Speaker Control:   Off                  Numlock on at boot: NO
Cache:                  Enabled            Quick Boot: Off
Default Contrast: 11                     External Monitor:   On
Range is 0 to 31
10 or 11 is about the best, but it's not very good,
Page 2 of 2
Power Management: AC Disabled
System Idle After:   3 Seconds          System Idle Speed:   Divide by 8
System Standby After:   6 Minutes   System Standby Speed:   Stopped
System Suspend After:   10 Minutes   Hard Disk Off After:   5 Minutes

<F2 SysInfo>
page 1 if 2
Processor Type:   80486 SX
Coprocessor Type:   80387 or compatible         Option ROMs Found:
Reserved Memory:   Not Installed                           No Option Roms found
BIOS Version:           1.13
Video Mode:              03h
Serial Ports:               03F8h  02F8h
Printer Ports:            0378h       
? page 2?

1) what does video mode 03h mean?
2) what operating systems can be run on a 80486 SX with 32 megabytes of memory?
3) is there any mouse or touch screen support?
4) is this a special BIOS that has built-in PCMCIA support?  My WIN XP BIOS does not.

CCFL Back Light

After the boot process the screed went dark.  I thought the CCFL power supply was defective,hence this paragraph. 

10 Mar 2008 - This is normal operation.  When using J2 to provide external DC power the screen looks normal during the BIOS part of the boot, then switches to the poor contrast mode.  That may be because of the contents of the existing hard drive.  For example the hard drive software may configure the screen improperly.

Fig  17 CCFL circuit

Just to the left of the white 5 terminal input connector the board is marked:

At the green plug into the white connector at the left I'm calling the top pin #1
to Gnd
1.3 M
14.5 k
3.5 k
1.6 M

The lamp is 3 mm dia x 128 mm long.

The design is based on Linear Technologies LT1172 100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators and very close to  App Note 49 Fig 2 & D-1.
The full primary of the transformer has a data sheet resistance of 0.19 Ohms (center tap half that) and the feedback windings are 0.084 Ohms each so it's difficult to make resistance measurements.  Instead of the half bridge transistors specified in the app note some Zetex parts were used.  The Zetex parts are specified to have ten times lower Vces.

2783384  ELECTRICAL INVERTER CIRCUITS, R.L. Bright & G.H. Royer, Feb 26 1957, 331/113A ; 290/4R; 307/401; 331/181; 363/133 - magnetic saturation of the transformer is a key parameter.

The LT1172 (U1) has it's Vin pin wired to connector J1 pin 3 and not to the +8 volt supply, maybe as a way to disable the LCD?
To check the inverter the switching output pin of  U1 or the emitter of either Q1 or Q2 can be grounded.  This turns on the CCFL even when the lid is has been removed.   When testing after starting the computer the lid can be disconnected and the computer continues to run.

I've tried pulling J1 pins 3, 4 & 5 up and down one at a time (I don't have enough hands to do more, and no single pin will turn on the CCFL.  Note the Royer patent shows that a couple of transistors, a special transformer and a source of DC are all that's needed to make an inverter.  The 1172 is there to regulate the current and control the brightness, i.e. lamp current.

Operating System

The short bars above the starting longer bars are the navigation buttons.  The screen is VGA color, so some flavor of Windows should run.
Also in a military environment a mouse does not make sense.  Win XP requires a minimum of 256 MB of RAM and so is way too big.
WIN 3.1 would fit and WIN 95 or WIN 98 might fit.
DOS 6.n makes the most sense.

14 March 2008 - waiting for PCMCIA hard drive.
4 April 2008 - the PCMCIA hard drives have been here for some time.  But when I tried to put them into my laptop - no go.
The hard drives are Type III, i.e. 10 mm high and would not fit.  So eBay had a PCMCIA to PCI adapter advertised with the words "works with Type I, II or III cards and the photo showed a tall slot, BUT when it came the slot was about 6 mm nowhere near 10 mm.  Well after returning it today received an email refunding my purchase.  I have a feeling that most of these adapters advertised as Type I, II, III are only good for the 5 mm cards unless there are explicit words stating otherwise.

PCMCIA Hard Drive

Fig 24 Viper 170 MB Drive
PCMCIA Hard Drive 10 mm high
Found on eBay and think it's the same type, only half the capacity, as the drives that were used in the PSG-9.
This is a 170 MB dirve and they were 340 MB.
This probably is a 16 bit drive, not a 32 bit.
It's twice the height of most PCMCIA cards, Type III, not Type I or II.

BIOS Parameters for Viper Drives

Landing Zone
Integral Viper 85 MB
pins 3-4 off
pins 3-4 on
Integral Viper 170 MB 981
pins 3-4 off pins 3-4 on ? ?
Integral Viper 260 MB ? ? ? pins 3-4 off pins 3-4 on ? ?
Integral Viper 340 MB 771
pins 3-4 off pins 3-4 on ? ?

The manufacturer was Integral Peripherals.  Founded 1990 - last patent 1997.
James H Morehouse Patents at:
Storage Technology Corporation 1978, 1980
Amcodyne Inc 1982
Prairietek Corp 1988, 1989
Conner Peripherals 1990, 1993, 1995
Integral Peripherals 1990, 1991, 1993, 1994, 1996
Mobile Storage Tech 1994, 1996, 1997, 1998
Seagate Tech 1995

David M. Furay Patents at:
Prairietek Corp 1988, 1989
Conner Peripherals 1990, 1995
Integral Peripherals 1990, 1991, 1993, 1994, 1995, 1996
Mobile Storage Tech 1993, 1996, 1997, 2000


5149048 Shock absorbent mounting arrangement for disk drive or other component
5161770 Shock absorbent mounting arrangement for disk drive or other component
5189576 Rotary inertial latch for disk drive actuator
5218253 Spin motor for a hard disk assembly
5237472 Rigid disk drive with dynamic head loading apparatus
5258695 Spin motor control system for a hard disk assembly
5289325 Rigid disk drive with dynamic head loading apparatus
5291110 Low acoustic noise seeking method and apparatus
5296986 Rotary intertial latch for disk drive actuator to protect against rotational ...
5321560 Embedded servo system for low power disk drives
5349350 Run length limited encoding/decoding system for low power disk drives
5377065 Miniature hard disk drive for portable computer having a rotary inertial ...
5379171 Microminiature hard disk drive, James H. Morehouse, David M. Furay, Robert A. Alt, Bruce D. Emo, James A. Dunckley, Jan 3, 1995, 360/105; 360/970.1
looks like Viper mechanism with alternate interface packaging
5384677 Architecture for low-profile disk drive device
5404257 Rotary inertial latch for disk drive actuator
5408367 Method of optimizing operation of disk drive
5408374 Miniature hard disk drive with spin motor for portable computer
5426562 Disk drive enclosed by shock absorbent jacket and mounted in electronic ...
5442266 Miniature disk drive with spin motor control system
5422770 Shock bumper for a head/disk suspension
5448433 Disk drive information storage device with baseplate and cover having ...
5457365 Disk drive power management system
5465034 Low acoustic noise seeking method and apparatus
5466997 Spin motor control system for a hard disk assembly
5469314 Miniature disk drive with dynamic head loading
5486964 Miniature disk drive with dynamic head loading with skewed lifting tab
5526202 Disk drive embedded servo system having a servo field with an asymmetrical ...
5539714 Adaptive runout compensation for miniature disk drives
5559648 Method for optimizing track location during servo writing
5579189 Microminiature hard disk drive
5583842 Method for improving servo field yields
5592349 Microminiature disk drive with clamp having fingers for radially positioning ...
5596458 Variable zone layout for information storage disk drive
5689386 Miniature hard disk drive with EMI protection and single permanent magnet ...
5694267 Removable disk drive and protective device
5724209 Low-profile disk mounting assembly, and low-profile disk drives constructed ...
5738533 Electrical connector fastened to a rigid member for improved connector ...
5760983 Method for optimizing AGC in a servo field including multiple use of an AGC ...
5760986 Microminiature hard disk drive
5768049 Disk drive apparatus
5790345 Disk clamp with tabs shaped to apply equal forces at equally spaced ...
5822150 Disk drive including a substantially monolithic stator assembly fabricated ...
5835303 Microminiature hard disk drive
5870237 Method for variable zone layout for information storage disk drive

PCMCIA to PCI adapter card to preload hard drive

Fig 25 Viper Drive in PCI slot adapter.
PCMCIA (PC Card) adapter to PCI bus
This adapter has the proper large opening so that the 10 mm high hard drive PCMCIA card can fit throught the mounting bracket.

Next w'll see if the adapter works and if the drive works.
It did NOT work.  I haven't been able to format the Viper as a bootable drive.  You can read it, format it, write and read files, but NOT make it boot DOS.

14 Apr 2008 - spent most of yesterday trying to make the drive bootable.  It's relativity easy to make a bootable floppy or CD-ROM with DOS 6.22 but not a hard drive.
The WIN XP computer hard drive is NTFS formatted so can not be read by DOS.  A fix is probably to get a new drive and format it as FAT and install WIN 98 (which runs over DOS).
The software packages that make a media bootable are very specific about working on a floppy or CD and exclude a hard drive for the options list.
After booting a floppy and running DOS 6.22 the PCMCIA card is NOT a valid drive.  Either /or/ both the BIOS and OS need PCMCIA drivers added.
The big chip on the adapter card has "1410" in what's probably the part number.  TI made a 1410 and 1420 IC for PCMCIA applications so this is probably a clone of that.
So drivers for the TI 1410 may work.  Tried drivers that displayed as DOS booted:
 "Shining PMIDE-ASC, M17 Carad Services Client V 5.81
No Card Sercices Found!
Configuring the Socket Now!
No PCMCIA Controler Found!
ATA/IDE Fixed & Removable Disk Driver V 5.60
c Shining Tech
Stablizing Drive . .  .
>>> No EIDE Host Adapter Found
>>>IDE Disk Driver is not installed<<<
Press and key to continue
Device driver not found: 'BANANA'.
No valid CDROM device drivers selected

Storage Formats

The signals used for an IDE Hard Drives and for PCMCIA (PC Card) and for Compact Flash are all the same.  That makes is easy to adapt from one to the other.
18 April 2008 - have adapter on order that holds PCMCIA drive and has IDE connector. 
This should allow a very simple format and make system disk on the PCMCIA drive.
Fig 26 Hard Drive Stack: Desktop, Laptop, PCMCIA, Compact Flash
                Unknown, PCMCIA & CF drives
 Fig 27 Compact Flash
                Flash connector
 Fig 28 PCMCIA
Fig 29 HP C2985A Laptop IDE
HP C2985A hard
                drive connector
 Fig 30 Desktop IDE
Quantum LPS IDE
                hard drive connector
Fig 31Viper Drive in Adapter to IDE.
                to IDE adapter
Card adapts PCMCIA (PC Card) to IDE.
Same connectors as Desk Top Hard Drive


military circular connector, external screw threads, shrouded male pins, #/row= 3, 6, 7, 8, 7, 8, 7, 6, 3
Dual Modem 1
circular connector, external screw threads (not push on LEMO)
What are these connectors & where to get plugs?
External DC Power
VGA Video Mon
DB-9-m COM2
E1 & E2 2
wire line spring binding posts
protocol 2

Note 1 - By using a local radio/SINCGARS cable two way digital messaging can be done.  What is that cable?

Note 2 -for single channel communications.

What is the J2 Connector?

PSG-9 J2 External Power Connector. WHAT IS IT?Fig 33 J2 Connector
The connector with the cap off is J2 used for external DC power.  It has 7 terminals (hard to say if they are male, female or both). 

The mating plug will have a body diameter of about 0.216" and 3 projecting lugs.
What is this Connector?

The three pins  (top row left, middle row left and center) are the ground connections.
The bottom row two pins are the +8 Volt connection.

What connector family and plug to make external power cable?
J3 just to the right of J2 has different keying, see Fig 3 Connector Assembly above.

William Perry has found a LEMO connector that has the correct insert, but the connector does NOT mate, only the insert.
PSG-9 J2 insert, not connector PSG-9 LEMO insert, not connector
April Note that this is the correct insert, but NOT the correct connector.  The barrel O.D. of 6.96mm is larger than the I.D. of J2 so will not fit.
I'm looking into using the insert to make a plug that would mate to J2 (or J3).
If you are interested let me know.April 2009

Fig 32 External Power Wire

PSG-9 Back of J2 Hot Wire22 Mar 2008 - This shows the hot wire mod to get power to J2 until the proper connector is located.  A couple of tie wraps to take any strain off the solder only joint.  With this connection you can see the BIOS boot then the LCD goes into invisible mode.

I started to use my laptop to load a PCMCIA hard drive, but the laptop only accepts the Type I cards (5 mm) and the hard drive is a little over 10 mm high.  A PCI card for the desktop  is on order.
Just above the second bottom philips head screw from the right there's a SMT version of a TO-220 package that contains a 340 power Schottky diode  with it's anode connected to the same terminal as the red wire and it's cathode connected to the big connector just above it.  The 8 lead IC just to the right and up from the 340 may be a power transistor.   All four top pins are connected to the battery positive pin and the lower left three pins are connected to the same row of pins on the big connector as the BD340 diode.  There's a SOT-23 FET just to the left of the BD340 that connects to the lower right pin on the 8 lead package.  These parts form the selection circuit that uses the external power as a primary supply and if it fails switches over to the battery.

J1 Modem Connector Pinout

When the keyway is at top center the PSG-9 pins are numbered left to right 1, 2, 3 for the first row, 4 through 9 for the second row, etc.
The SINCGARS (RT-1439) (also see U-229 family Pin Out) cable is wired:
31, 43, 55
data out
Data In
Key Tx
Mike In
Data In
Data Out
Digital Data Mode Select 7
Set D. Mode
Analog Data Mode Select 9, 42
Set A. Mode

Controls & Indicators

There are two button groups to the left and right of the screen.
When the two bottom bars are pressed and both held for about 1/2 second the power comes up.
The shorter bars above those are used for screen navigation.
The LCD screen is 4.5" hi by 6" wide, about a 7 3/8" diagonal 640x480 VGA color

When the keyboard/LCD cover is closed the 4 indicator LEDs are still visible:

Modem Protocols

The internal modem supports the Ground/Vehicle Laser Locator Designator (G/VLLD) IAW MIS 34269F over a high speed synchronous data port.

STANAG 4202 Transmission Characteristics for Data Exchange between Land Tactical Data Processing Equipment over Single Channel Radio Links
Applies to PRC-77, PRC-126, SINCGARS (Annex A), WD1 Wireline, WF-16 Wireline.
MIL-STD-188-110A Interoperability and Performance Standards for Data Modems
Applies to VRC-12, KY-57
ACCS-A3-407-008C Interface Specification for the Army Data Distribution System (ADDS) Interface
Applies to EPLRS

This seems strange.  I would expect the PRC-77 and VRC-12 to have the same capability as far as data is concerned, but not the PRC-126 since there's no mil std connector that gives acess to the wide band capability, it can only be used with the KYV-2/SVM-68.  All SINCGARS radios have a number of data modes and so might be in multiple catagories.


All the manuals are in the "D" folder and so are not public information at this time.

TB 11-7021-228-10-1
HTU (DIGITAL DATA SET AN/PSG-9) (NSN 7035-01-452-4306)
LCU (FIRE CONTROL SYSTEM AN/GYK-37) (NSN 1230-01-380-9228) AND
RHC (DIGITAL DATA SET AN/PSG-11 (NSN 7021-01-491-9157)

TB 11-7021-228-10-2   
HTU (DIGITIAL DATA SET AN/PSG-9) (NSN 7035-01-452-4306) (EIC: N/A)  <- spelling s.b. Digital
LCU (DIGITAL DATA SET AN/GYK-37 (NSN 1230-01-380-9228) (EIC: N/A)
RHC (DIGITAL DATA SET AN/PSG-11) (NSN 7021-01-491-9157)

TB 11-7021-228-10-3
RHC (DIGITAL DATA SET AN/PSG-11) (NSN 70210-01-491-9157),
LCU (FIRE CONTROL SYSTEM AN/GYK-27 (NSN 1230-01-380-9228),
HTU (DIGITAL DATA SET AN/PSG-9) (NSN 7035-01-452-4306) 

TB 11-7021-228-10-4
HTU (DIGITAL DATA SET AN/PSG-9) (NSN 7035-01-452-4306)
RHC (DIGITAL DATA SET AN/PSG-11 (NSN 7021-01-497-9157

CPNU WITH CONTAINER (6605-01-521-7884)
BCU WITH CONTAINER (6130-01-521-6921)
CDU WITH CONTAINER (7010-01-521-7882)

TM 11-7021-225-12&P
NSN 7021-01-444-9260 (EIC:  N/A) V3 HANDHELD TERMINAL UNIT - the V3 looks very similar to the PSG-9



The M111 Improved Position andAzimuth Determining System (IPADS) is a High Mobility Multipurpose Wheeled Vehicle (HMMWV)-mounted, inertial navigation surveying system, which will be used by artillery survey parties as a secure, all-weather, day-night means for rapidly extending survey control to satisfy the demands of mobile weapons systems.  IPADS, which does not rely on Global Positioning System (GPS), accurately aligns GPS-aided, self-locating firing elements on a common survey grid, enabling these firing elements to mass fires.  IPADS will provide a highly mobile and accurate means of performing artillery survey.  IPADS will determine location coordinates, altitude in meters, direction in millimeters (typo?) ,and will be capable of rapid and accurate self-alignment utilizing ring-laser gyros and accelerometers.  The IPADS will replace the currently fielded AN/USQ-70 Position and Azimuth Determining System (PADS) in all Marine Corps artillery units.

CA-5033/UYC Printer

The same Canidian eBay seller that was selling the PSG-9 also had this printer.  Maybe they are related and manbe not?

It's 7 x 7 x 5 inches and the roll paper is 4 1/4" wide and I'm sure it's dot matrix to support both text and graphics.

Controls and Indicators

On the front there is a combined ON-OFF switch that's also a circuit breaker.  When switched on with a battery installed the LEDs flicker and go off and the paper feeds.
LEDs for:
Two push buttons:
TEST - prints a test pattern
LF - Feeds a line of paper
When LF is pressed and held and TEST is also pressed (BRIGHT) the POWER ON LED brightenes and it seems continionous paper is fed.  That may be a problem or may be related to not having anything connected to the data input.


On the back there are two connectors and a tapped hole for a ground marked E1 GND.
Circular bayonet locking.


5 male pins in a "W" shape. 
Pins marked A, B, C, D, E & F
[ cap MS3181-14CA]

The J1 POWER connector has a low diode drop from J1-A to battery pin 5 and from J1-C to battery pin 5.  Battery pin 5 is the "A" side positive terminal.
J1-B connects to J1-D and these connect to battery pin 3.  Battery pin 3 is connected to battery pin 1 ("B" side minus) only on rechargable batteries and so is a selective way of charging only rechargable batteries and not charging primary batteries like the BA-5590/U.  Battery pin 2 is jumpered to pin 4 so the battery is being used as a 24 volt (30 V full charge/fresh to 10 volt dead).

29 March 2008 - my day one guess is that B & D are ground and A & C are +28 VDC.


6 male pins.
Pins marked A, B, C, D, E & F
[cap MS3181-10CA]

There are 6 wires from the back of J2 they are (in pin number order) Wht, Blk, Wht, Blk, Wht, Blk.
Pin 1 on PCB is J2-A and Pin 6 on the PCB is J2-F


The internal battery is one of the BA-5590 family.

Fig 34 Printer Battery Compartment

CA-5033/UYC Printer Sliding BA-5590 Battery

On the left side there are two screws that can be backed out a few turns then the battery door slides to the left (no need to remove the screws).

A BA-5590 battery is connected to the cable plug and the plug end fed in first.  My 5590BA will also work.
I have the cover off which had three seals that were already broken.  Front is to the right of this photo.  The PCB to the right is the printer driver and the PCB near the battery is the power supply.   There are 5 wires going to the battery so it may support rechargable batteries like the BB-390, BB-590, BB2590, etc. when external power is used.

Printer Test

Fig 35 Printer Test Strip

CA-5033/UYC Printer Test Output
The alpha numeric characte set inncludes the upper case letters, lower case letters, digits and 23 symbols for a total of 85 characters.  The test is 41 lines long and there are 40 characters across the strip.

Serial Printer Connector Normal Computer DB-9m connector:

in +0.1
out -10.3
in +0.1
out -10.3
in +0.1
in +0.1
Note that the direction of the signal (Dir coul) is exactly correlated with the open circuit voltage on the pin.

Serial Printer DB-9f (HP LaserJet 4050)
This table has all the directions opposite of those in the computer table above.
Some of the names may be wrong.
Data Carrier
Terminal Ready
Ring Indicator

A minimal connection would be pins 2, 3 and 5.  The next most common would include CTS/RTS so would have pins 2, 3, 5, 7 & 8 which is 5 pins and so may be what the CA-5033 uses.
The HP LaserJet has the following voltages for those 5 pins: -6.4, 0, 0, 0, +6.9.

Blk v   Red->
The A-C voltage of almost 19 seems too high so the ground pin is not A or C.
The data is symmetrical about the diagonal.
Looking for rows that have three zeros and one each + and one each - voltage yeilds:
B, E or F as possible ground pins.

Vehicle Mount

Fig 40
PSG-9 Vehicle

Fig 41
PSG-9 Vehicle
Fig 42
PSG-9 Vehicle


PSG-2 Digital Message Device
TM 11-7440-281-
BA-5600, BB-2600 (same as the PSG-9)
AN/PSG-5 Fire Support Team Digital Message Device.
(FIST DMD), a field communication terminal developed to support forward fire control on the batttlefield.  
TM 11-7025-244-12&P
TM 11-7025-244-30
TM 11-7025-244-30P
Baattery ??

PSC-6 Digital Imaging Set -


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