250 Chapter 5
Post-Repair Procedures
Internal 50 MHz Calibrator Adjustment
Internal 50 MHz Calibrator Adjustment
Description
The Internal 50 MHz Calibration adjustment measures the amplitude
of a calibrated input signal of 50 MHz and adjusts the internal
reference oscillator.
The signal source is provided by a synthesized signal generator. A
power meter is used to adjust the signal amplitude to a fixed level. The
signal is then measured by the UUT. Then the internal 50 MHz
reference oscillator amplitude is adjusted to that measured value.
The internal 50 MHz reference oscillator is used when the instrument
performs many of the auto alignment measurements.
NOTE Ensure that the UUT has been warmed up in accordance with the
instrument specifications.
Required Equipment
The following table lists the test equipment required for the
adjustment. The list includes any miscellaneous devices, cables, and
adaptors. Refer to Table 1-2, “Required Test Equipment Summary,” on
page 18, for the critical specifications of the test equipment.
Table 5-3 Required Test Equipment
Instrument Recommended
Agilent Model
Number
Alternative
Agilent Model
Number
Signal Source
Synthesized Signal Generator 8663A 8662A or 8648
Meters
Power Meter E4419A/B E4418A or 438
Power Sensor, High sensitivity 8481D
Attenuators
30 dB Fixed Attenuator 11708A
included with
8481D
Cables
Type-N 11500C
To Next Page
Loading...
Need help?
General
