Agilent Technologies 8719ET Service Manual page 101

8719ET/20ET/22ET
8719ES/20ES/22ES
RF Network Analyzers
3. Connect the cable to PORT 2 (TRANSMISSION Port on ET models) and press the
following:
CALIBRATE MENU
Cal
INPUT PORTS
Meas
4. Press , and enter the power level from "Power B" in
Power
5. Adjust A59R4 until the minimum value of the trace on the display equals "Power C" in
Table 3-5. For the location of A59R4, see
6. If no more correction constant routines are going to be performed, return the A7 switch
to the NRM position and perform the
In Case of Difficulty
• If the analyzer fails the "Power Linearity Performance Test" do the following:
— If the analyzer fails the performance test for the power levels listed as P2, P3, repeat
the "Power Linearity Adjustment," on page 3-24
— If the analyzer fails the performance test for the power level listed as P2, repeat the
"Output Power Adjustments," on page 3-17
on page 3-24.
• If the analyzer is still not passing the "Power Linearity Performance Test," check for
available power and modulator functionality by adjusting the power DAC from 0 to
4095 (refer to the
The power should vary from −20 dB to +4 dB from the maximum specified power in
most cases. (At some of the frequencies you may not be able to tune above maximum
power.)
— If the analyzer is operating correctly, as indicated from the results of the previous
step, repeat the
— If the analyzer is not operating correctly, as indicated from the results of the previous
step, refer to Chapter 7 , "Source Troubleshooting,"
Technologies sales or service office.
Service Guide
RECEIVER CAL
B
"EEPROM Backup Disk Procedure," on page
"Output Power Adjustments"
"Output Power Adjustments"
Adjustments and Correction Constants
Table
Figure 3-3 on page 3-19.
and the "Power Linearity Adjustment,"
procedure).
procedure.
or contact the nearest Agilent
Power Linearity Adjustment
3-5, then press .
x1
3-33.
3- 29