531 RBW (300

532 RBW <300

Flatness correction data for Resolution Bandwidths <300 Hz not acceptable.

Absolute gain data for Resolution Bandwidths ~300 Hz not acceptable.

533 RBW <300 ADC timeout using <300 Hz Resolution Bandwidth.

534 RBW (300 Unable to do frequency count of CAL OSC using IF down-converter.

535 RBW <300 Unable to obtain adequate FM demod range to measure 500 Hz IF filter.

536 RBW <300 Unable to auto-range chirp signal while setting VCXO or doing flatness calibration for <300 Hz Resolution Bandwidth.

537 RBW <300 Unable to auto-range CW CAL OSC signal to count VCXO signal.

538 RBW <300 Shape of 500 Hz IF filter appears too noisy to adjust VCXO down-converter.

539 RBW <300 Unable to auto-range the CW CAL OSC signal to pretune VCXO.

540 RBW <300 Unable to find CW CAL OSC signal during VCXO pretune at power-up.

550 LOG AMPL CAL Oscillator ID. Indicates incompatible hardware. Cal Osc not expected

551 LOG AMPL LOG Board ID. Indicates incompatible hardware. Log board not expected.

552 LOG AMPL Unable to adjust amplitude of log scale.

553 LOG AMPL Unable to adjust amplitude of log scale. Divide by 0-D in CalLogGain problem.

554 LOG AMPL Unable to adjust amplitude of log scale. Divide by 0-M in CalLogGain problem.

555 LOG AMPL Unable to adjust amplitude of log scale. No TOS-G in CalLogGain.

556 LOG AMPL Unable to adjust amplitude of log scale. No TOS-0 in CalLogGain.

557 LOG AMPL Unable to adjust amplitude of log scale. Insufficient IF gain in CalLogGian.

558 LOG AMPL Unable to adjust amplitude of log scale. Negative M, 0 in CalLogGain.

559 LOG AMPL Unable to adjust amplitude of log scale. Low MDAC value.

560 LOG AMPL Unable to adjust amplitude of log scale. High MDAC value.

561 LOG AMPL Unable to adjust amplitude of log scale. Possible problem in Second Step Gain/P1 offset in CalLogGain.

562 LOG AMPL Unable to adjust amplitude of log scale. Possible problem in Second Step Gain/P2 offset in CalLogGain.

563 LOG AMPL Unable to adjust amplitude of log scale. Possible problem in Third Step Gain range in CalLogGain.

6-28 General Troubleshooting