Base Adjustment - Front Panel Head Rf Output - Fluke 96000 Series Service Manual

96000 Series
Service Manual

Base Adjustment - Front Panel Head RF Output

Equipment required:
•
•
•
•
•
•
Use the following procedure to adjust the UUT base (mainframe).
If the Reference Frequency Adjustment was just completed, omit
steps 1 through 2, below.
1. On the UUT, push , followed by the softkeys Support
2. Using the keypad, enter the password, and push .
3. Push the softkey Adjust Base.
4. Remove the Leveling Head from the UUT base unit (if connected). Connect
For measurements made with the AC Measurement Standard during
calibration adjustment, use a common mode choke as described in
the Level Accuracy Test. Connect the choke input low to the AC
Measurement Standard chassis ground. Keep the ground
connection as short as possible and set the AC Measurement
Standard to Internal Guard.
5. Set the UUT to OPER.
6. Using the blue arrow keys and rotary knob, edit the UUT Actual output until
7. Push Next Target.
If the AC Measurement Standard used does not read the UUT
output in dBm directly, calculate the desired value using the
following formula:
Alternatively, the UUT units selection may be changed to V rms to
display targets and adjust output values directly in rms voltage. Push
and select the required units.
Measurements made on the 5790A 2.2 mV range (at levels below
−40 dBm) require correction for the 2.2 mV range linearity error.
4-4
AC Measurement Standard
Precision 50 Ω feedthrough termination
Power Meter
Power Sensor, Diode, 50 Ω
Spectrum Analyzer/Measuring Receiver
50 Ω Type-N female-to-BNC male adapter
Functions>Calibration>Adjust Instrument.
the UUT front panel Head RF Output to INPUT 1 of the AC Measurement
Standard via a precision 50 Ω feedthrough termination.
the AC Measurement Standard indicates the Target value stated. Push
Accept Target.
Note
Note
Note

2
V

( )
50
Ω =
dBm 50 10 log

−3
10


Note




