TB 9-6625-2215-24
f. Set INT STD-EXT STD switch on rear panel of frequency counter to EXT STD.
NOTE
When
calibrating these models, omit this check.
a. Performance Check
(1) Connect frequency counter A input to TI OSC jack (rear panel).
(2) Adjust Y1 ADJ (fig. 1) as required to obtain frequency counter indication of exact
(3) Adjust autotransformer output from 105 to 125 V while monitoring frequency
counter indication. Frequency will not change by more than 0.5 Hz.
Figure 1. Test Instrument - (HP 5303B) - Bottom View.
b. Adjustments. No further adjustments can be made.