SCOPE: The purpose of this section is to inform customers about the CM product part numbering rules. It provides a description of the different generic fields constituting CM Computer P/Ns thus facilitating understanding and ordering of our products.

Download this PDF file.

There are five different types of CM products:

1.- VMEbus Module Generic Part Number: CM-XX-XX /V /T /M
2.- cPCI Module Generic Part Number: CMC-XX-XX /V /T /M
3.- Second Generation Chassis CM-RA-20/30/40 Generic Part Number:
CM-RA-SO /B /I /W /F /C /SK
4.- Third Generation Chassis CM-ATR-25/35/45 Generic Part Number:
CM-ATR-S5 /CT /B /I /W /3.3 /D1 /D2 /R /S /FP /TC /BC /F /G /C
5.- ATR Chassis Mounting Trays Generic Part Number: CM-TR-XX
6.- Generic Software Part Number: CM-XX-XX-SW /V

NOTE: See our product data sheets on this website to find the P/N details that apply to each specific product.

1. VME MODULE ORDERING INFORMATION

Generic Part Number: CM-XX-XX /V /T /M

CM-XX-XX is module name.
Examples of module names are:
CM-DI-40 64 Channel Optocoupled Input Module
CM-AD-45 32 Channel (16 differential), 12 bit, 100 Ksps Input Module
Select one option from each of the following categories

/V Version of Module
1 = Version 1 of module.
2 = Version 2 of module.
. . . .
n = Version n of module.

/T Temperature Range
C = Commercial (0 to +60 ºC). Only available with fiberglass PCB.
I = Industrial (-20 to +70 ºC). Only available with fibreglass PCB.
R+ = Military Rugged+ (-40 to +85 ºC). Only available with conduction cooled PCB.
883 = Full Military 883 (-50 to +90 ºC). Only available with conduction cooled PCB.

/M Mechanical Version
A = IEC 297 Standard mechanics with front panel. J2 and front panel I/O connectors.
B = IEEE P1101.2 Military mechanics with wedge-locks & J2 I/O connector.

VMEbus Module Part Number Example

CM-DA-40/1/R+/A
- Module is CM-DA-40 24 Channel Optoisolated 12 Bit Analog Output Module
- Version is /1 with 24 D/A channels, 12 bit resolution, without galvanic isolation.
- Military Rugged+ temperature range (-40 to +85 ºC).
- IEC 297 Standard mechanics with front panel. J2 and front panel I/O connectors.

2. cPCI MODULE ORDERING INFORMATION

Generic Part Number: CMC-XX-XX /V /T

CMC-XX-XX is module name.

Examples of module names are:
CMC-DO-45 64 Channel Output Module
CMC-DA-55 16 Channel, 12 bit D/A Output Module

Select one option from each of the following categories

/V Version of Module
1 = Version 1 of module.
2 = Version 2 of module.
. . . .
n = Version n of module.

/T Temperature Range
C = Commercial (0 to +60 ºC). Only available with fiberglass PCB.
I = Industrial (-20 to +70 ºC). Only available with fibreglass PCB.
R+ = Military Rugged+ (-40 to +85 ºC). Only available with conduction cooled PCB.
883 = Full Military 883 (-50 to +90 ºC). Only available with conduction cooled PCB.

3. ATR CM-RA-SO (2nd Gen.) ORDERING INFORMATION

Generic Part Number: CM-RA-S0 /B /I /W /F /C /SK

Select one option from each of the following categories

S0 Size

40 = 1 ATR size. 12 6U slots.
30 = 3/4 ATR size. 7 6U slots.
20 = 1/2 ATR size. 5 6U slots.
20/3U = 1/2 ATR size. 10 3U slots.

/B Backplane

BP32L = Standard VME32 backplane for 6U boards fitted with 3 row DIN-41612 connectors. Integrated wiring lines across the backplane between J2 I/O pins and the front panel connectors.

BP64H = Extended VME64 backplane for 6U boards fitted with 5 row VME64x connectors. High profile enclosures feature an additional 50 mm area of free wiring space below the backplane.

BP10L = Standard 10 slot VME32 backplane for 3U boards fitted with 3 row DIN-41612 connectors. This backplane, available only with the CM-RA-20/3U, is user configurable as 2x5 slot for dual redundancy, or 1x10 slot for a standard single system.

BP10H = Extended 10 slot VME64 backplane for 3U boards fitted with 5 row VME64x connectors. This backplane is configurable as 2x5 slot for dual redundancy, or 1x10 slot for a standard single system. High profile enclosures feature an additional 50 mm area of free wiring space below the backplane.

/I Input Power Voltage

28VDC = 28 VDC Input.
115VAC = 115 VAC @400 Hz Input.

/W Power Supply Ratings

1 = 150W Power Supply (+5VDC @10A, ±12VDC @4A).
2 = 175W Power Supply (+5VDC @15A, ±12VDC @4A).
3 = 200W Power Supply (+5VDC @20A, ±12VDC @4A).
4 = 250W Power Supply (+5VDC @30A, ±12VDC @4A).
5 = 300W Power Supply (+5VDC @40A, ±12VDC @4A).
6 = 400W Power Supply (+5VDC @60A, ±12VDC @4A).
7 = 450W Power Supply (+5VDC @60A, ±12VDC @6A).
8 = 500W Power Supply (+5VDC @60A, ±12VDC @8A).

/F Fans

S = Sealed. No fan installed at the rear.
1F = 1 Standard fan assembly at the rear.
1HA = 1 High Altitude fan assembly at the rear.
2F = 2 Standard fan assemblies at the rear.
2HA = 2 High Altitude fan assemblies at the rear.

/C Color

B = Black.
G = Navy Grey.

/SK Special Feature Kit

Available only for CM-RA-40/BP64H/2HA. Includes the following additional features over-and-above standard chassis features: Power Supply extra hold capacitors, Temperature Supervisory Unit, Extra 3.3 VDC @ 12 A DC/DC converter, EMI kit throughout with fan honeycomb finger-guards. There is also an optional 50W DC/DC converter with customer definable DC output voltage TBD by customer.

CM-RA-S0 Enclosure Part Number Example

CM-RA-40/BP64H/115VAC/5/2HA/B

- 1 ATR, 12 slot, 6U VMEbus Avionics Enclosure
- Extended 12 slot, 6U VME64 backplane fitted with 5 row J0/J1/J2 connectors.
- 115VAC @ 400 Hz input power supply.
- 300W Power Supply (+5VDC @40A, ±12VDC @4A).
- 2 High altitude fans installed at rear.
- Enclosure color is black.

4. ATR (3rd Gen.) ORDERING INFORMATION

Generic Part Number:

CM-ATR-S5 /CT /B /I /W /3.3 /D1 /D2 /R /S /FP /TC /BC /F /G /C

S5 Enclosure Model Size

/CT Enclosure Cooling Technique

/B Backplane Type

/I PSU Input Power Voltage

/W Power Supply Unit Watts

/3.3 3.3 VDC

/D1 DC/DC AUX1

/D2 DC/DC AUX2

/R Redundant PSU

/S Temperature Supervisory Unit

/FP Front Panel Layout

/TC Chassis Top Cover

/BC Chassis Bottom Cover

/F Rear-mounted Fan assembly (FAC Series only)

Rear-mounted Fan Pack assembly (HES Series only)

/G Fan Finger Guards (FAC & HES Series only)

/C Chassis Color

Select one option from each of the following categories.

S5 Enclosure Model Size

25: 1/2 ATR Long size. 5 slots 6U full military enclosure.
35: 3/4 ATR Long size. 7 slots 6U full military enclosure.
45: 1 ATR Long size. 12 slots 6U full military enclosure.

/CT Enclosure Cooling Technique

FAC: Flowthrough Air Cooled.
Ambient air is forced over the electronic modules using rear mounted exhaust fans.

S: Sealed.
Low cost, isolated dry-air enclosure with inner fans for internal air re-circulation.
Chassis heat is dissipated by a combination of cold-plate conduction, radiation and free-air convection through the ambient air surrounding the unit.

SEF: Sealed with Extended Fins.
Ultimate heat self-dissipation capacity enclosure that also incorporates internal air re-circulation fans. This dry-air chassis is fitted with over-size cooling fins on top cover, rear panel and side-walls in order to maximize radiation and natural convection (upward flow of air). Cold-plate mounting is recommended.

HES: Heat Exchange Sidewalls.
High performance isolated dry-air enclosure incorporating re-circulation fans inside and rear mounted cooling fans. Heat generated within the enclosure is conducted to the hollow sidewalls heat exchangers where it is dissipated to the ambient environment by forced air cooling rear fans or by vehicle platform air plenum.

/B Backplane Type

VME64x: Military VME64x Backplane fitted with 5 row J1/J2 and J0 connectors.
VME64xK: Military VME64x Backplane fitted with 5 row J1/J2 & key-slot J0.
cPCI: Military compactPCI Backplane with rear panel I/O on P3, P4 & P5 connectors.

/I PSU Input Power Voltage

28VDC: 28 VDC Input.
48VDC: 48 VDC Input.
270VDC: 270 VDC Input.
90-264VAC: Autorange 90-264 VAC @ 47-880 Hz Input.
200VAC-3Ph: 200 VAC 3 Phase @ 47-880 Hz Input.

/W Power Supply Unit Watts

PSUs available for CM-ATR-25
300W: 28 VDC input only (+5VDC @ 20A, ±12 VDC @ 8A, 3.3 VDC @ 5A).
400W: All PSUs except 28 VDC (+5 VDC @ 20A, ±12 VDC @ 12A, 3.3 VDC @ 5A).

PSUs available for CM-ATR-35
400W: 28 VDC input only (+5VDC @ 40A, ±12 VDC @ 8A, 3.3 VDC @ 5A).
500W: All PSUs except 28 VDC (+5VDC @ 40A, ±12 VDC @ 12A, 3.3 VDC @ 5A).

PSUs available for CM-ATR-45
950W: 28 VDC input only (+5VDC @ 80A, ±12 VDC @ 16A, +3.3 VDC @ 45A).
1050W: All PSUs except 28VDC (+5VDC @ 80A, ±12VDC @ 20A, +3.3VDC @ 45A).

/3.3 3.3 VDC

3.3 VDC Optional DC/DC AUX0 converter on Backplane
(CM-ATR-25 & CM-ATR-35 only).

3.3-75W: 3.3VDC @ 22 A (in lieu of 3.3 VDC @ 5A).

/D1 DC/DC AUX1

100W Optional DC/DC Converter on Backplane. User defined output.

Auxiliary DC/DC output options: +2VDC 50W, -2VDC 50W, +3,3VDC 75W, -3,3VDC 75W, +5VDC 100W, -5VDC 100W, +12VDC 100W, -12VDC 100W, +15VDC 100W, -15VDC 100W, +28VDC 100W, -28VDC 100W, +48VDC 100W, -48VDC 100W.

/D2 DC/DC AUX2 (available for CM-ATR-35 & CM-ATR-45 only)

100W Optional DC/DC Converter on Backplane. User defined output.

Auxiliary DC/DC output options: +2VDC 50W, -2VDC 50W, +3,3VDC 75W, -3,3VDC 75W, +5VDC 100W, -5VDC 100W, +12VDC 100W, -12VDC 100W, +15VDC 100W, -15VDC 100W, +28VDC 100W, -28VDC 100W, +48VDC 100W, -48VDC 100W.

/R Redundant PSU

1 Slot plug-in Optional RPSUs available for CM-ATR-25

R375W: 28 VDC input only (+5VDC @ 20 A, ±12 VDC @ 8A, 3.3 VDC @ 22A).
R475W: All PSUs except 28VDC (+5VDC @ 20A, ±12 VDC @ 12A, 3.3 VDC @ 22A).

1 Slot plug-in Optional RPSUs available for CM-ATR-35
R475W: 28 VDC input only (+5VDC @ 40A, ±12 VDC @ 8A, 3.3 VDC @ 22A).
R575W: All PSUs except 28VDC (+5VDC @ 40A, ±12 VDC @ 12A, 3.3 VDC @ 22A).

1 Slot plug-in Optional RPSUs available for CM-ATR-45
R950W: 28 VDC input only (+5VDC @ 80A, ±12 VDC @ 16A, +3.3 VDC @ 45A).
R1050W: All PSUs except 28VDC (+5VDC @ 80A, ±12VDC @ 20A, +3.3VDC@45A).

/S Temperature Supervisory Unit (Optionally Fitted on 1 slot plug-in RPSUs)

TSU: Temperature Supervisory Unit incorporated in Redundant PSU module.

/FP Front Panel Layout

CMP: Standard CM Computer front panel fitted with MIL-C-38999 connectors.
UDP: User defined front panel layout (requires customer drawings).

/TC Chassis Top Cover

STC: Standard, low-profile top cover (vertical wiring clearance 20 mm).
HETC: Heat Exchanger Top Cover (HES series only).
HTC: Extended high-profile top cover featuring 15 mm extra clearance (35 mm total).
FTC: Low-profile top cover fitted with cooling fins (standard on SEF Series). Chassis upper area wiring clearance is 20 mm.

/BC Chassis Bottom Cover

SBC: Standard low-profile bottom cover (chassis vertical wiring clearance below backplane is 25 mm).
HBC: Extended high-profile bottom cover featuring 25 mm extra clearance (50 mm total wiring clearance).

/F Rear-mounted Fan assembly (FAC Series only)

Fans available for CM-ATR-25/FAC & CM-ATR-35/FAC
F115-400: 1x Rotron PX2 Military fan fitted for 115 VAC @ 400 Hz (65 CFM).
F200-400: 1x Rotron PX2 Military fan fitted for 200 VAC @ 400 Hz 3-Ph (120 CFM).
F28: 1x Rotron PX2 Military fan fitted for 28 VDC (55 CFM).
F115-60: 1x Rugged fan fitted for 115 VAC @ 60 Hz (20 CFM).
F220-50: 1x Rugged fan fitted for 220 VAC @ 50 Hz (20 CFM).

Fans available for CM-ATR-45/FAC
F115-400: 2x Rotron PX3 Military fan fitted for 115 VAC @ 400 Hz (100 CFM each).
F200-400: 2x Rotron PX3 Military fan fitted for 200 VAC @ 400 Hz 3Ph (140 CFM ea)
F28: 2x Rotron PX3 Military fan fitted for 28 VDC (110 CFM each).
F115-60: 2x Rugged fan fitted for 115 VAC @ 60 Hz (35 CFM each).
F220-50: 2x Rugged fan fitted for 220 VAC @ 50 Hz (35 CFM each).

/F Rear-mounted Fan Pack assembly (HES Series only)

Fans Pack available for CM-ATR-25/HES & CM-ATR-35/HES
F115-400: 2x Rotron PX2 Military fan fitted for 115 VAC @ 400 Hz (65 CFM each).
F200-400: 2x Rotron PX2 Military fan fitted for 200 VAC @ 400 Hz 3Ph (120 CFM ea)
F28: 2x Rotron PX2 Military fan fitted for 28 VDC (55 CFM each).
F115-60: 2x Rugged fan fitted for 115 VAC @ 60 Hz (20 CFM each).
F220-50: 2x Rugged fan fitted for 220 VAC @ 50 Hz (20 CFM each).
VAP: Vehicle air-plenum according to customer specs (external forced air source).

Fans Pack available for CM-ATR-45/HES
F115-400: 4x Rotron PX2 Military fan fitted for 115 VAC @ 400 Hz (65 CFM each).
F200-400: 4x Rotron PX2 Military fan fitted for 200 VAC @ 400 Hz 3Ph (120 CFM ea)
F28: 4x Rotron PX2 Military fan fitted for 28 VDC (55 CFM each).
F115-60: 4x Rugged fan fitted for 115 VAC @ 60 Hz (20 CFM each).
F220-50: 4x Rugged fan fitted for 220 VAC @ 50 Hz (20 CFM each).
VAP: Vehicle air-plenum according to customer specs (external forced air source).

/G Fan Finger Guards (FAC & HES Series)

STDG: Standard Rotron PX2 & PX3 finger guards.
EMIG: Optional EMI Shielded finger guards fitted with honeycomb filter.

/C Chassis Color

B: Black.
G: Navy Grey.
E: Army Dark Earth.
W: White.
R: Red.
PT: Platinum.
YW: Yellow.
GN: Green.
BLU: Dark Blue.
CR: Chromate conversion coating MIL-C-5541.
O: Other (user defined).

CM-ATR-25/35/45 Enclosure Part Number Example.

CM-ATR-45 /FAC /VME64x /28VDC /950W /24-100W /48-100W /CMP /STC /HBC /F115-400 /STDG /B

-1 ATR, 12 slot, 6U VMEbus Avionics Enclosure.
- Flowthrough air cooled.
- Extended 12 slot, 6U VME64x backplane fitted with 5 row J0/J1/J2 connectors.
- 28VDC 950W Power Supply Unit (+5VDC @80A, ±12VDC @16A, +3.3VDC @45A).
- (+) 24VDC @ 4A DC/DC AUX1 user output on Backplane.
- (+) 48VDC @ 2A DC/DC AUX2 user output on Backplane.
- Standard CM Computer front panel.
- Standard low profile top cover.
- Extended high profile hat bottom cover.
- 2x Rotron 115 VAC @ 400 Hz PX3 military fan installed at the rear (200 CFM total).
- Standard Rotron finger guards.
- Enclosure black color.
5. CHASSIS MOUNTING TRAY ORDERING INFORMATION
Generic Part Number: CM-TR-XX
Select one option from each of the following categories:

/XX Mounting Tray Size

45: Mounting Tray for CM-ATR-45.
35: Mounting Tray for CM-ATR-35.
25: Mounting Tray for CM-ATR-25.
40: Mounting Tray for CM-RA-40.
30: Mounting Tray for CM-RA-30.
20: Mounting Tray for CM-RA-20.
6. SOFTWARE ORDERING INFORMATION

Generic Software Part Number: CM-XX-XX-SW /V

XX-XX is module name.

Examples of module names are: DI-42, DO-40, AD-45, etc.

/V Version

1: Indicates VxWorks driver + Generic ANSI C driver.

Software Part Number Examples

CM-DA-40-SW/1 VxWorks driver + Generic ANSI C for CM-DA-40 board.
CM-DIO-40-SW/1 VxWorks driver + Generic ANSI C for CM-DIO-40 board.