HP 8901B Operation And Calibration Manual page 187

Operation Model 8901B
PROCEDURE
Determine Cal Factor Status
Determine the status of the calibration factors and enter new calibration factors if necessary. Connect
the power sensor or sensor module to the Modulation Analyzer's SENSOR input. (The power sensor
cable need not be connected to the source a t this time.)
1.
Select RF POWER. If Error 15 is displayed, no calibration factors have been entered. Enter
calibration factors as described in steps a and b below. If Error 15 is not displayed, proceed
to step 4.
2. Enter the reference cal factor (the reference cal factor is the cal factor for 50 MHz; all other cal
factors are relative to it):
37.3
SPCL, reference cal factor value (printed on a label on the power sensor),
9 6
CAL FACTOR (Blue Key, MHz).
Example: Enter a reference cal factor of 98.5% into the Automatic Cal Factor table.
*
(program codes)
37.3
SP 98.5 CF
Code
2
T
Function
Function Code
3. Enter each frequency/cal-factor pair:
37.3
SPCL, frequency value (in MHz), cal-factor value, %CAL FACTOR (Blue Key, MHz).
Repeat this step until all frequency/cal-factor pairs have been entered.
0
Disregard Error 15 if it is displayed during cal factor entry.
0
If an error is made during entry of any value, select CLEAR and immediately re-enter the
correct value.
Example: Enter a cal factor of 99.0% at a frequency of
1
MHz.
@+
(program codes)
37.3
Sp
1 MZ
99 CF
Code
2
I
1TT7----
Function
Function
-A
LL
Data
Data Function
3-72
RF Power