Keysight Technologies N5261A User's And Service Manual page 87

Service Information
Measure Gain Factors for Ports 3 and 4 (Procedure B)
Repeat the process above for Ports 3 and 4 with the following modifications:
— Connect the SRC2 jumper on the rear panel.
— Connect to SRC2 IN in place of SRC1 IN.
— The first set of Test Set I/O commands should be 32,2 and 0,16.
— The Test Set I/O command to set the path to Port 4 is 0,32.
Table 2-5
Ports/Freq
Port 1 - 7 GHz
Port 1 - 10 GHz
Port 1 - 15 GHz
Port 1 - 20 GHz
Port 2 - 7 GHz
Port 2 - 10 GHz
Port 2 - 15 GHz
Port 2 - 20 GHz
Port 3 - 7 GHz
Port 3 - 10 GHz
Port 3 - 15 GHz
Port 3 - 20 GHz
Port 4 - 7 GHz
Port 4 - 10 GHz
Port 4 - 15 GHz
Port 4 - 20 GHz
Keysight N5261/62A User's & Service Guide
(turn off SRC2 ALC and set the path to Port 3)
Gain Factor Addresses and Values
Write
Address
144
148
152
156
160
164
168
172
176
180
184
188
192
196
200
204
Read Address Value
16
20
24
28
32
36
40
44
48
52
56
60
64
68
72
76
81