User's Manual Part 2

RBS 2308 and RBS 2309 User’s Guide

P010260A

RBS

Jumper

Feeder

Antenna

Test Equipment

50 W

Antenna

Jumper

Figure 38 DTF Test Setup

3. Check that all connections are properly connected and tightened.

6.3.2 Testing Feeder Installation

1. Check that the Site Masters display shows “CAL ON”, indicating that the

Site Master is calibrated. If the display shows “CAL OFF”, calibrate the Site

Master according to Section 6.2 Calibrating the Antenna Tester on page 90.

2. Ensure that the test equipment is connected according to Section 6.3.1

Connecting DTF Test Setup on page 93.

3. Press the FREQ/DIST key to set the frequency.

4. Press the D1 soft key, enter the desired

start value (usually 0.0 m) and

press ENTER.

5. Press the D2 soft key, enter the desired

stop value (usually a slight

overestimation of the total length of the feeder system) and press ENTER.

6. Press the AMPLITUDE key to set the scale.

7. Press the TOP soft key, enter 1.2 and press ENTER.

8. Press the LIMIT EDIT soft key and enter 1.05.PressENTER.

Note: Ensure that Limit is ON by pressing the LIMIT ON/OFF soft key.

9. Wait while

the Site Master is calculating (6 to 22 seconds depending on

selected d

isplay resolution).

10. Observe the waveform. Examples of acceptable and unacceptable DTF

measurement results are shown in the figures below.

11. Check that no reflections are above 1.05 SWR (31.5 dB Return Loss). See

Table 24 on page 107, if necessary.

EN/LZT 720 0027 Uen R8A 2006-06-27