HP 8647A User Manual

7
UUT
RF Output
Adjustments
COUNTER FREQUENCY
STANDARD
External
Frequency
RF
Input
Internal Timebase
Adjustment
Recommended
Equipment
(0 r equivalent )
Procedure
Use this procedure to adjust the internal timebase reference DACs.
The internal reference oscillator is adjusted with two DACs, one
for coarse tuning and one for fine tuning. Using the two DACs the
internal reference oscillator can be adjusted to the resolution of the
frequency counter used.
rn HP 5316B Frequency Counter
rn HP 5065 Frequency Standard
rn Turn the signal generator (UUT) off.
rn Set the rear panel timebase adjust switch to on (1).
rn Turn the signal generator on and wait for the "5 second self test" to
rn Connect the equipment as shown.
rn Follow the instructions on the signal generator's display and adjust
rn When the adjustment is complete turn the signal generator off.
rn Set the rear panel Timebase Adjust switch to off (0).
finish.
the knobs until the counter reads exactly
10,000,000 MHz.
Internal Timebase Adjustment Setup
Adjustments 7-1

HP 8647A Specifications

General

Brand	HP
Model	8647A
Category	Portable Generator
Language	English