Multi-Channel DQM System - Model 941 - GDP Space Systems - Telemetry Systems, Synchronizers, BERTS, Demodulaters, Modulators, Receivers, Frame Synchronizers, decommutator, Simulators

The Model 941 is a Multi-Channel Data Quality Monitor (DQM) system packaged in a 10.5" x 19" EIA rack mountable chassis. The system supports eight PCM data streams. The unit provides information pertaining to the data stream quality as well as frame and subframe synchronization states.

Features

Up to 8 Ch DQM

6 Word Status

Frame Synchronizer

Up to 15 Mbps / Stream

16 to 262,144 Bits / Frame

Auto Polarity

Correction

Bit Slip Compensation

Sub-Frame Synchronizer

2 to 512 Fr / SF
9 Bit ID Cntr
32 Bit RCY

Decommutator

4 to 16 Bits / Word
MSB / LSB Alignment
Parity Check

Channel status is displayed locally with leds located on the front panel. Decommutated data, frame and subframe status, word and frame number (with timing markers), is also provided in parallel word form on the unit rear panel.

Six counters accumulate Data Quality information. These counters are activated on command and can be simultaniously reset.

# of frames in Minor Frame Check or Lock (valid frames).
# of Minor Frames received with complemented synchronization patterns (inverted data).
# of frames in Minor Frame lock with unacceptable synchronization patterns (flywheel frames).
# of Minor Frames with a bit slip detected.
# of Minor Frame Lock to Search transitions (dropouts).
# of Minor Frames received while in Major Frame(Subframe) Lock (valid Major Frame).

All functions are controlled through either the local front panel display and keypad, or an IEEE-488 (RS232 is optional) remote control port. Virtual Instrument (VI) software is provided to allow the user to control the unit in a Windows point and click environment. The software provides a single-screen display of all statistics and status for all channels.


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The Model 941 is a Multi-Channel Data Quality Monitor (DQM) system packaged in a 10.5" x 19" EIA rack mountable chassis. The system supports eight PCM data streams. The unit provides information pertaining to the data stream quality as well as frame and subframe synchronization states.
Features
Up to 8 Ch DQM 6 Word Status Frame Synchronizer Up to 15 Mbps / Stream 16 to 262,144 Bits / Frame Auto Polarity Correction Bit Slip Compensation	Sub-Frame Synchronizer 2 to 512 Fr / SF 9 Bit ID Cntr 32 Bit RCY Decommutator 4 to 16 Bits / Word MSB / LSB Alignment Parity Check

Channel status is displayed locally with leds located on the front panel. Decommutated data, frame and subframe status, word and frame number (with timing markers), is also provided in parallel word form on the unit rear panel. Six counters accumulate Data Quality information. These counters are activated on command and can be simultaniously reset. # of frames in Minor Frame Check or Lock (valid frames). # of Minor Frames received with complemented synchronization patterns (inverted data). # of frames in Minor Frame lock with unacceptable synchronization patterns (flywheel frames). # of Minor Frames with a bit slip detected. # of Minor Frame Lock to Search transitions (dropouts). # of Minor Frames received while in Major Frame(Subframe) Lock (valid Major Frame). All functions are controlled through either the local front panel display and keypad, or an IEEE-488 (RS232 is optional) remote control port. Virtual Instrument (VI) software is provided to allow the user to control the unit in a Windows point and click environment. The software provides a single-screen display of all statistics and status for all channels.