Specifications
Chapter 7 165
Periodic Adjustments
Periodic Calibration Menu Descriptions
Periodic Calibration Menu Descriptions
This section describes the adjustment programs listed under the
Periodic Calibration menu.
Figure 7-3 Periodic Calibration
Timebase Reference Using a Counter
This program is used to manually tune the timebase reference using a
frequency counter as the time standard. This procedure has two basic
steps:
1. Manual adjustment of the two (coarse and fine) timebase tuning
DACs.
2. Downloading the DAC settings into the Test Set.
If you have not already adjusted the two timebase tuning DACs, exit
the program if needed (by selecting the Adj user key), and follow the
instructions in “Setting the Timebase Latches” on page 169.
If you have adjusted the timebase DACs, run this program and select
the Cal user key to make the setting permanent.
percal.eps
SERVICE MENU
1
2
3
4
5
Help
Exit
Functional Diagnostics
AF Diagnostics
RF Diagnostics
CDMA Diagnostics
Edit RF Diagnostic Limits
Periodic Calibration
IQ Calibration
Eb/No Calibration
=>
Move pointer to desired program using the
knob then press the knob. Press Help for
information on the tests. Press Exit to abort.
SERVICE MENU Screen
1
2
3
4
5
Exit
Timebase Reference Using a Counter
Timebase Reference Using a Source
Voltmeter References
Audio Frequency Generator Gain
External Modulation Path Gain
Audio Analyzer 1 Offset
Variable Frequency Notch Filter
=>
Move the pointer to the desired test using the
knob then press the knob. Press Exit key to
abort.
Periodic
Calibration
Menu
Periodic Calibration Menu