Maintenance
Description
item No.
3JG
1-3-20
U650 Setting modem 1
Description
Sets the G3 cable equalizer.
Sets the modem detection level.
Start
1. Press the enter key. The screen for selecting an item is displayed.
2. Select the item to be set using the up/down cursor keys.
3. Press the enter key. The screen for the selected item appears.
Display Description
1:REG. G3 TX EQR Sets the G3 transmission cable equalizer.
2:REG. G3 RX EQR Sets the G3 reception cable equalizer.
3:RX MODEM LEVEL Sets the modem detection level.
Setting the G3 transmission cable equalizer
Perform the following adjustment to make the equalizer compatible with the line characteristics.
1. Change the setting using the up/down cursor keys.
Display Description
1: 0dB 0 km
2: 4dB 4 km
3: 8dB 8 km
4: 12dB 12 km
2. Press the enter key. The value is set.
3. To return to the screen for selecting an item, press the back key.
Setting the G3 reception cable equalizer
Perform the following adjustment to make the equalizer compatible with the line characteristics.
1. Change the setting using the up/down cursor keys.
Display Description
1: 0dB 0 km
2: 4dB 4 km
3: 8dB 8 km
4: 12dB 12 km
2. Press the enter key. The value is set.
3. To return to the screen for selecting an item, press the back key.
Setting the modem detection level
To improve the transmission performance when a low quality line is used.
1. Change the setting using the up/down cursor keys.
Display Description
1: 33dBm –33 dBm
2: 38dBm –38 dBm
3: 43dBm –43 dBm
4: 48dBm –47 dBm
2. Press the enter key. The value is set.
3. To return to the screen for selecting an item, press the back key.
Completion
Press the back key at the screen for selecting an item. The screen for selecting a maintenance item No. is
displayed.
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