Keysight Technologies N52 Series User's And Service Manual page 87

Service Information
Read Gain Factors from the Test Set (Procedure C)
Issue a separate Test Set I/O read command for each entry in
page
to read the value for Port 2 at 10 GHz, issue the following command: 36.
The command will return the value stored in the test set. The value is an
integer representing tenths of a dB. Ignore the leading "+".
Write Gain Factors to the Test Set (Procedure D)
A slide switch must be accessed to enable writing of gain factors. The switch is
located on the test set Control Board next to U5, close to the rear panel. (The
test set controller board is shown in
"NCLR" labels are silk-screened near the sides of the switch. To enable
writing, slide both sections of the switch toward U5. To disable writing, slide
both sections of the switch away from U5. The switch may be covered with
soft, transparent plastic. A sharp, stiff tool may be required to manipulate the
switch.
Enable writing via the slide switch.
Issue a separate Test Set I/O write command for each entry in
example, to write a value of "253" for Port 1 at 7 GHz, issue the following
command: 144,253.
It is only necessary to write "new" values. If only Procedure A has been
performed and not Procedure B, then only values for Ports 1 and 2 need to be
written. If a test set controller board has been replaced, then values for all four
ports must be written for an N5262A.
Disable writing via the slide switch when this procedure is complete.
82
81. Record each value as it is read from the test set. As an example,
Figure 2-10 on page 58) "NWE" and
Keysight N5261/62A User's & Service Guide
Table 2-5 on
Table 2-5. As an