User's Manual

Table Of Contents
Equipment Calibration – continued
FEB 2005 1X SC 4812T Lite BTS Optimization/ATP F-31
PRELIMINARY
Calibrating HP 437 Power
Meter
Precise Transmit Output Power Calibration Measurements are made
using a Bolometer–type Broadband Power Meter with a sensitive Power
Sensor. Perform the procedure in Table F-21 to enter information unique
to the Power Sensor before calibrating the Test Set–up. Refer to
Figure F-21 as required.
This procedure must be done before the Automated
Calibration to enter Power Sensor–specific Calibration
Values.
NOTE
CONNECT POWER
SENSOR WITH POWER
METER TURNED OFF
CONNECT POWER SENSOR
TO POWER REFERENCE
WHEN CALIBRATING UNIT.
POWER REFERENCE IS
ENABLED USING THE SHIFT
KEYS
SHIFT (BLUE) PUSHBUTTON –
ACCESSES FUNCTION AND
DATA ENTRY KEYS IDENTIFIED
WITH LIGHT BLUE TEXT ON
THE FRONT PANEL ABOVE
THE BUTTONS
FW00308
Figure F-21: Power Meter Detail
Table F-21: HP 437 Power Meter Calibration Procedure
n 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 mis–calibration.
1 Make sure the Power Meter AC LINE Pushbutton is OFF.
2 Connect the Power Sensor Cable to the SENSOR Input.
3 Set the AC LINE Pushbutton to ON.
* IMPORTANT
The Calibration should be performed only after the Power Meter and Sensor have been allowed to
warm–up and stabilize for a minimum of 60 minutes.
table continued on next page
F