Troubleshooting
10. Check that the s
ignal levels on the top line indicate that a s ignal is present. If
they indicate a very low level, such as -13 dB then connect a bigger signal
to the Primary and Backup inputs.
11. If necessary, press and hold the PANEL ENABLE button to enable the
front-panel control buttons. The instrument beeps when the control buttons
are enabled.
12. Press the PRIMARY SOURCE and BACKUP SOURCE buttons to change
the active source. Watch the level readouts on the display as you make the
switch. If the levels change more than 1 dB, then the output is not terminated.
13. Add a termination to the output signal for the channel you are testing, and
then repeat this test.
Check th at the channel is
enabled
Each Channel can be enable or disabled, and it can be selected to trigger a source
switch or not. See the Operators manual for more information.
1. If necessary, set the instrument to Manual mode:
a. Press and hold the PANEL ENABLE button to enable the front-panel
control b uttons. The instrument beeps when the control buttons are
enabled.
b. Press the MANUAL MODE button to put the ECO8000 Series in Manual
mode.
2. Press BACK as necessary to access the top-level menu.
3. Press the up (▲)ordown(▼) arrow to select the Channel menu. The top
line will begin with “LTC” or “CH”.
4. Press the left (◄)orright(►) arrow button to select the channel you are
checking, and then press ENTER to enter the submenu for that channel.
5. Check that the channel is enabled. If the channel is disabled, press the left
(◄)orright(►) arrow button to select Enabled, and then press ENTER
to make the change.
ECO8000 Series Service Manual 4–21
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