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Chapter 8, Connector Descriptions
Rear Panel Connectors
Connector Descriptions
Frame Clk Out This connector provides a square wave from the Digital Generator’s Frame Clock.
This allows you to synchronize external equipment to the Digital Generator.
Operating Considerations
Nominal output frequency = 25 Hz
Output level = CMOS
Output impedance = 50 Ohms
Gen BB Data Out This connector monitors the digital signal applied to the Pre-modulation Filter/IQ
Modulator. This signal comes from either of two sources:
The internal Digital Generator section
The front panel Generator Baseband Data In connector (not available yet)
Operating considerations
The nominal delay from the first data bit in a two bit symbol to its peak RF
response after pi/4 DQPSK modulation is 12 bits (6 symbols).
Output level = CMOS
Output impedance = 50 Ohms
Nominal Data Rate = 48.3 kbits/sec
Ref In This connector provides a timing reference for the Digital Generator and Digital
Analyzer sections. One of these frequencies must be used:
25 Hz, 50 Hz, 24.3 kHz, 48.6 kHz, 1 MHz, 2 MHz, 5 MHz, 10 MHz
Operating Considerations
The Ref Unlock indicator is lit if the reference signal’s frequency does not match
this field setting.