General Instructions for troubleshooting for Egsm Rx

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Select: Product

Select: Testing

Alt+p

Alt+p

Band b

EGSM e

Alt+e

RF Controls r

RX Continuous Alt+r Cont. Mode Ch: SC Alt+o, SC

AGC Absolute: Multislot on Apply

The set-up should now look like this (Figure 105):

Alt+u, (if on remove checkmark)

RF Controls

RF Controls

C TX

Operation Mode (* Continuous r Burst

TX Data Tjipe: TX Power Level:

Conti "

BASE jJ

Cont. Mode Ch: |56 | 946.200000 Channel: ¡56 | 946.200000 Monitoring Ch: |l | 935.200000

Close

Help

Apply I

Cont. Mode Ch: |56 | 946.200000 Channel: ¡56 | 946.200000 Monitoring Ch: |l | 935.200000

Set Defaults

Get Defaults

AGC Absolute: Front End On d

AGC:

108.9

r Multislot On

TX Power Level 2:

AGC2 Absolute: Settling Time:

BASE jJ

108.9

Figure 105.

Apply a 947.06771MHz (channel 60 + 67.710kHz offset) -95 dBm signal to the RF-connector (remember to compensate for cable attenuation).

Technical Documentation

8. Troubleshooting

Measuring with an oscilloscope on "Hagar RXI" or "Hagar RXQ" this picture should be seen from a working EGSM receiver:

TekSERB io.oms/s

22 Acqs

TekSERB io.oms/s

22 Acqs

will -niiiiiv

Figure 106.

will -niiiiiv

Figure 106.

Signal amplitude 390mV p-p

DC offset 1,1V

Frequency 67kHz

If this picture is not seen, continue to the next section.

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