countermeasures dispensing system
firing pulse test set

overview

The CMDS Tester™ is a Firing Pulse Interval Test Set; a suite of test components designed to analyze firing pulse timing from a Countermeasures Dispensing System such as the AN/ALE-40 or the AN/ALE-47.

A test scenario is configured by replacing the AN/ALE-47 Countermeasures Magazine with the Pulse Tester unit and connecting it to the Pulse Collector unit using the connectors on the front panel. The CMDS Tester with one Pulse Collector can support up to 16 Pulse Tester units.

The test scenario can be expanded by connecting additional CM-C-16 units via the expansion connector on the front panel. The CMDS Tester's Graphical User Interface(GUI) software provides an easy to use Windows interface for users to control test runs and analyze collected data.

The CMDS Firing Pulse Interval Tester is a scalable suite of test components designed to analyze firing pulse timing from a Counter Measures Dispensing System.

The CMDS Tester provides the required components to measure timing intervals between firing pulses sent to Countermeasures Dispensers.

CMDS Pulse Tester (CM-T-47)
CMDS Pulse Collector (CM-C-16)
CMDS Graphical User Interface (GUI)

CM-T-47 pulse tester

The CMDS Pulse Tester provides the interface to the firing pulses by replacing the dispenser magazines on the aircraft under test.

It acts as a dummy load for the system sequencer to simulate dispenser squibs
It senses the firing pulse current using a preset threshold value and logs the occurrence to the Collector unit
Powered from Collector unit cabling (no batteries)

Pulse Width: 150 nsec min (Factory Adjustable)
Pulse Repetition Rate: 4.9 kps
Pulse Detection Threshold: Factory preset to 3A (Factory Adj. ~1A to 5A)
System Compatibility: AN/ALE-40, AN/ALE-47

CM-C-16 pulse collector

The CMDS Pulse Collector unit provides these functions:

A central collection point for pulses captured by up to 16 Pulse Testers
Timestamps pulses with 1 msec resolution
A connection to the software running on the host PC

Pulse Logging: 1024 Pulses per test file
Baud Rate: 9600
Test Support: 16 CMDS Pulse Testers
Trigger: 5V TTL compatible output, open collector, active low signal

power requirements CM-C-16

Input Voltage 85 -265 Volts AC
Frequency Range 47-440 Hz
Fuse 2 ea., 2 Amps / 250 V Slow-Blow, 5x20mm
Inrush Current (typ) 30A @ 115VAC Input, 60A @ 230VAC Input

CM-ITS interval tester GUI

The CMDS Interval Tester Graphical User Interface program (GUI) provides an interface for the user to control the test runs and analyze collected data.

PC requirements for CM-ITS GUI

Processor Intel Pentium III 650Mhz/ Compatible or better
Memory 128 Mbytes RAM
Hard Disk 4 Mbytes Program Storage, 10 Mbytes minimal Trace Storage
Media Support CD-ROM / CD-R/ CD-R/W drive
Operating System Windows 2000/ XP (Requirements may vary with operating system)
Communications RS-232 COM port

environmental requirements CM-C-16/CM-T-47

Operation Temperature 50� to 95� F/ 10� to 35� C
Storage Temperature 40� to 104� F / 4� To 40� C
Relative Humidity (noncondensing)10% to 85%

Note: Each Tester unit receives power from the Collector via the interconnection cable / data link connector. Contact ITCN to configure model numbers based on system requirements.