User Manual

Test Set Calibration – continued

5/21/04 1X SC4812T–MC BTS Optimization/ATP 3-73

DRAFT

Table 3-27: Cable Calibration

n ActionStep

2 Enter the channel number(s) in the Channels box.

NOTE

Multiple channel numbers must be separated with a

comma and no space (i.e.; 200,800). When two or more

channel numbers are entered, the cables are calibrated for

each channel. Interpolation is accomplished for other

channels as required for TX calibration.

3 In the Cable Calibration pick list select one of the

following:

– TX and RX Cable Cal

– TX Cable Cal

– RX Cable Cal

4 Click OK and follow the direction displayed for each

step. A status report window displays the results of the

cable calibration.

Calibrate Test Cabling Using

Signal Generator & Spectrum

Analyzer

Follow the procedure in Table 3-28 to calibrate the TX/Duplexed RX

cables using a signal generator and spectrum analyzer. Refer to

Figure 3-24, if required. Follow the procedure in Table 3-29 to calibrate

the Non–Duplexed RX cables using the signal generator and spectrum

analyzer. Refer to Figure 3-25, if required.

TX and Duplexed RX Cable Calibration

Table 3-28: Calibrating TX and Duplexed RX Cables Using Signal Generator and Spectrum Analyzer

n Step Action

1 Connect a short test cable between the spectrum analyzer and the signal generator.

2 Set signal generator to 0 dBm at the customer frequency of 869–894 MHz.

3 Use a spectrum analyzer to measure signal generator output (see Figure 3-24, A) and record the

value.

4 Connect the spectrum analyzer’s short cable to point B, (as shown in the lower right portion of the

diagram) to measure cable output at customer frequency of 869–894 MHz. Record the value at

point B.

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