2Service
126 Keysight 53210A/53220A/53230A Assembly Level Service Guide
Summary of oscillator calibration procedure:
– Input signal: This should be a clean square wave with a fast rise time at
10 MHz, 1 Vp-p, 0V DC offset
– Timebase: Any external timebase you provide is ignored during calibration.
– Verify signal input connections and that source output is ON.
– Procedure: From the front-panel, the following key strokes initiate the internal
reference oscillator calibration:
[Utility] / (Cal AutoCal) / (Perform Cal) / (Cal Step Oscil) / enter <Input Freq> / (Perform
Cal Step)
Remote oscillator calibration summary:
– Set timeout for PC to be greater than 20 seconds.
– Connect calibration source to channel 1 (10.000 000 000 MHz).
– Unlock security: CALibration:SECurity:STATe OFF, <code>
– Read security state: CALibration:SECurity:STATe?
- 0 means OFF or unlocked.
– Send command to calibrate: “CALibration:VALue 10E6”.
– Send query command: “CAL?”.
– Retrieve query result:
- 0 indicates the calibration PASSED.
- Any value other than 0 indicates calibration FAILED.
– If non-zero value, read error queue: SYSTem:ERRor? Read errors until no more
errors. Consult the Error Messages section starting on page 174 for more
information on specific calibration error messages.
–
For remote calibration, an Internal Reference Oscillator calibration is
automatically selected (over internal DAC calibration) since the cal value of 10E6
is larger than the acceptable DAC voltage range.
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