Agilent Technologies 856290216 service manual Automatic if Errors 400 to

360 SPAC CAL The start bucket correction is out of range. This error indicates a possible failure of the sweep generator on the Al4 frequency control assembly. Refer to “Sweep Generator Circuit” in Chapter 11, “Synthesizer Section.”

361 SPAC CAL The percent of span correction is out of range. This error indicates a possible failure of the sweep generator on the Al4 frequency control assembly. Refer to “Sweep Generator Circuit” in Chapter 11, “Synthesizer Section.”

Automatic IF Errors (400 to 599)

These error codes are generated when the automatic IF adjustment routine detects a fault. This routine first adjusts amplitude parameters, then resolution bandwidths in this sequence: 300 kHz, 1 MHz, 100 kHz, 30 kHz, 10 kHz, 3 kHz, 1 kHz, 300 Hz, 100 Hz,

30 Hz, 10 Hz, 3 Hz, 1 Hz, and 2 MHz. The routine restarts from the beginning if a fault is detected. Parameters adjusted after the routine begins but before the fault is detected are correct; parameters adjusted later in the sequence are suspect. Refer to “Automatic IF Adjustment” in Chapter 9, “IF Section.”

The IF Section relies on the ADC and video circuitry to perform its continuous IF adjustments. IF-related errors occur if the ADC, video circuitry, or A4 assembly linear path is faulty.

400 AMPL C300 Unable to adjust amplitude of resolution bandwidths less than 300 Hz.

401 AMPL 300 Unable to adjust amplitude of 300 Hz resolution bandwidth.

402 AMPL 1K Unable to adjust amplitude of 1 kHz resolution bandwidth.

403 AMPL 3K Unable to adjust amplitude of 3 kHz resolution bandwidth.

7-26 General Troubleshooting