User's Manual

Test Equipment Setup – continued
May 2000
F-3
SC 4812T CDMA BTS Optimization/ATP
Manual Cable Calibration
using HP8921 with HP PCS
Interface (HP83236)
Perform the procedure in Table F-2 to calibrate the test equipment using
the HP8921 Cellular Communications Analyzer equipped with the
HP83236 PCS Interface.
This calibration method must be executed with great care.
Some losses are measured close to the minimum limit of
the power meter sensor (–30 dBm).
NOTE
Prerequisites
Ensure the following prerequisites have been met before proceeding:
 Test equipment to be calibrated has been connected correctly for cable
calibration.
 Test equipment has been selected and calibrated.
Refer to Figure F-1 for location of the components on the PCS Interface
and Communications Test Set.
Table F-2: Manual Cable Calibration Test Equipment Setup (using the HP PCS Interface)
Step Action
NOTE
Verify that GPIB controller is turned off.
1 Insert HP83236 Manual Control System card into memory card slot (see Figure F-1).
2 Press the Preset pushbutton.
3 Under Screen Controls, press the TESTS pushbutton to display the TESTS (Main Menu) screen.
4 Position the cursor at Select Procedure Location and select it. In the Choices selection box, select
CARD.
5 Position the cursor at Select Procedure Filename and select it. In the Choices selection box, select
MANUAL.
6 Position the cursor at RUN TEST and select it. HP must be in Control Mode Select YES.
7 If using HP 83236A:
Set channel number=<chan#>:
– Position cursor at Channel
Number and select it.
– Enter the chan# using the numeric
keypad; press [Enter] and the
screen will go blank.
– When the screen reappears, the
chan# will be displayed on the
channel number line.
If using HP 83236B:
Set channel frequency:
– Position cursor at Frequency Band and press Enter.
– Select User Defined Frequency.
– Go Back to Previous Menu.
– Position the cursor to 83236 generator frequency and
enter actual RX frequency.
– Position the cursor to 83236 analyzer frequency and
enter actual TX frequency.
. . . continued on next page
F