Applications
• Telemetry Ground Equipment
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Products
3362

The Model 3362 is a full function 20 Mbps tunable Dual Channel QPSK PCM Bit Synchronizer in a 3 rack-unit chassis. It is ideally suited for reconstructing a noisy input PCM data stream and providing a clean PCM signal with a coherent clock. The unit can be operated as a single or dual channel bit synchronizer. By providing Dual Channels, I and Q outputs from a QPSK receiver demodulator may be processed and recombined into a single output.

Each channel of the Model 3362 is tunable over the bit rate range of 10 bps to 20 Mbps for NRZ codes and up to 10 Mbps for BiØ codes. The standard NRZ-L/M/S, BiØ-L/M/S, DBiØ-M/S, DM-M/S, MDM-M/S codes are accepted from one of three input sources. The 3362 produces an output data stream with a bit error rate within 1 dB of theory. The 3362 excels in BER performance, offering enhanced sync maintenance and acquisition capabilities. It maintains effective
synchronization down to an Eb/No of -3 dB and acquisition time is less than 20 transitions in noise. The loop bandwidth can be set anywhere in the range from 0.01% to 1.60% without losing phase lock.