Features
• Accepts PCM to 25 Mbps
• Multiple Signal Level Interfaces
• Complete Data and Clock Reconstruction
• Internal Bit Synchronizers Available
Introduction
The IMUX PCM Input and Output cards support data rates of up to 25 Mbps in formats that exceed the IRIG 106-93 Class II configurations. The PCM modules plug into the IMUX-323 and -324 Quadraplex boards in both the airborne and laboratory chassis. Input and output signal levels and impedance are selectable. Both 0° and 180° clocks are supported on the input and output modules. Data recording, which is supported by the PCM Input and Output modules, ensures that all data is captured and not a single bit is lost. Viterbi cards and bit synchronizer modules are also available. Over 500 bit synchronizers are in the field today operating from 100 bps to 40 Mbps.
Inputs |
Sources |
Single channel per mode |
(PCM-405-02) |
Data Source |
NRZ-L Data and 0° clock or 180° clock |
|
Data Impedance |
Selectable; 75 (low) and 10,000 (high) ohms TTL, |
|
|
120 ohms RS-422 |
|
Signal Levels |
TTL (data and clock) |
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Differential RS-422 (data and clock) |
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Differential ECL (data and clock)
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Input Codes |
NRZ-L |
|
Operating Range |
DC to 20 Mbps |
|
Input Stability |
Burst or isochronous |
Outputs |
Serial Data Output |
NRZ-L |
(PCM-406-02) |
Output Drive |
TTL into 75 ohm, ECL & RS-422 |
|
Data to Clock Skew |
Less than 10 nanoseconds |
|
Parallel Data Output |
24- or 32-bit data, 8-bit tag to GME bus |
|
Clock |
0° or 180° |
Electrical and |
Form Factor |
IMUX Quadraplex Single Submodule |
Environmental |
Connectors |
Motherboard I/O |
|
Operating Temperature |
32 °F - 158 °F (0 °C - 70 °C) |
|
Storage Temperature |
14 °F - 185 °F (-10 °C - 85 °C) |
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Operating Altitude |
0 – 10,000 feet (0 – 3,100 meters) |
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Storage Altitude |
-1,000 to 20,000 feet (-300 – 6,200 meters) |
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Humidity |
20 to 95% noncondensing |
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Ordering Codes
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PCM-405-02 |
PCM Input, 32 Mbps |
|
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PCM-406-02 |
PCM Output, 32 Mbps
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