User Manual

Manual Cable Calibration – continued
SC4812ET BTS Optimization/ATP — CDMA LMF
Jan 2002
F-20
Calibrating Gigatronics 8541C
power meter
Precise transmit output power calibration measurements are made using
a bolometer–type broadband power meter with a sensitive power sensor.
Follow the steps in Table F-12 to enter information unique to the power
sensor.
Table F-12: Calibrate Gigatronics 8541C Power Meter
Step Action
! CAUTION
Do not connect/disconnect the power meter sensor cable with AC power applied to the meter.
Disconnection could result in destruction of the sensing element or miscalibration.
NOTE
Allow the power meter and sensor to warm up and stabilize for a minimum of 60 minutes before
performing the calibration procedure.
1
 Make sure the power meter POWER pushbutton is OFF.
 Connect the power sensor cable to the SENSOR input.
 Set the POWER pushbutton to ON.
2 Verify the Power GPIB mode and address:
 Press MENU. Use the  arrow key to select CONFIG MENU, and press ENTER.
 Use the  arrow key to select GPIB, and press ENTER.
 Use the  arrow keys to set MODE to 8541C.
 Press  and use the  arrow keys as required to set ADDRESS to 13.
 Press ENTER.
3
 Connect the power sensor to the CALIBRATOR output connector.
 Press ZERO.
 Wait for the process to complete. Sensor factory calibration data is read to power meter during this
process.
 Disconnect the power sensor from the CALIBRATOR output.
F