Auto Calibration; Calibration At Power-Up - HP 3563A Operating Manual

Input Setup
Calibrating the HP 3563A

Auto Calibration

When auto calibration is selected, the analyzer calibrates according to the schedule in the following
table.
There are several exceptions to the auto cal schedule. Auto cal does not interrupt averaged
measurements, time captures, time throughputs, auto mathJauto sequence editing, or sweeps. If
source protect is on, calibration turns the source off during the cal, then turns it back on when the
cal is finished. Before starting lengthy measurements, turn auto cal off and perform a single ca!.
Note that the gain and phase are still accurate after two hours unless a significant change in the
operating environment (temperature change, etc.) is experienced.
Note
Calibration activates AC coupling and leaves it active.

Calibration at Power-up

The analyzer automatically performs the calibration routine at power-up. You can inhibit the
power-up calibration routine using auto-sequence programming (see chapter 10). Simply create an
auto-sequence program and label it "AUTOST, CALOFF". The analyzer
auto-sequence program at power-up and skip the calibration routine.
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Table 7-6. Auto Calibration Schedule
At power-on
8 minutes after power-on or after reset.
1 hour after power-on or after reset.
Every 2 hours thereafter
will
then run your