Installation Instructions

Test Equipment Setup – continued

PRELIMINARY

SCt300 BTS Hardware Installation, ATP and FRU Procedures

DEC 2000

7-30

Calibration of the communications test set (or equivalent

test equipment) must be performed at the site before

calibrating the overall test set. Calibrate the test equipment

after it has been allowed to warm–up and stabilize for a

minimum of 60 minutes.

IMPORTANT

Purpose of Test set

Calibration

These procedures access the LMF automated calibration routine used to

determine the path losses of the supported communications analyzer,

power meter, associated test cables, and (if used) antenna switch that

make up the overall calibrated test set. After calibration, the gain/loss

offset values are stored in a test measurement offset file on the LMF.

Selecting Test Equipment

Use LMF Options from the Options menu list to select test equipment

automatically (using the autodetect feature) or manually.

A Serial Connection and a Network Connection tab are provided for

test equipment selection. The Serial Connection tab is used when the

test equipment items are connected directly to the LMF computer via a

GPIB box (normal setup). The Network Connection tab is used when

the test equipment is to be connected remotely via a network connection.

Prerequisites

Ensure the following prerequisites have been met before proceeding:

S Test equipment is correctly connected and turned on.

S CDMA LMF computer serial port and test equipment are connected to

the GPIB box.

Manually Selecting Test

Equipment in a Serial

Connection Tab

Test equipment can be manually specified before, or after, the test

equipment is connected. The LMF does not check to see if the test

equipment is actually detected for manual specification. Follow the

procedure in Table 7-16 to select test equipment manually.

Table 7-16: Selecting Test Equipment Manually in a Serial Connection Tab

n Step Action

1 From the Options menu, select LMF Options.

The LMF Options window appears.

2 Click on the Serial Connection tab (if not in the forefront).

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