Troubleshooting
c. Press the right
(►) arrow to scroll through each of the channel threshold
readouts.
NOTE. For modules 2–4, the channel number readout is the number within
the module, not the channel number on the rear or front panel. For example,
channel 1 of module 2 is either channel 4 on an ECO8000 or channel 6 on
an ECO8020.
The voltage displayed is a function of the threshold that is set. A readout
of 0.73 V is nominal for an NTSC threshold. Other signals have different
thresholds as a function of their level and bandwidth. It is very useful
to compare levels from different channels that have the same threshold
setting.
NOTE. If
the channel threshold levels are not correct, replace the module.
d. Press the right (►) arrow to scroll through each of the detected peak
levels
for the Module 2 Primary and Backup inputs. For example, the
Channel 1 Primary input is indicated by CH1 P PK and the Backup input
is indicated by CH1 B PK.
If no signal is present, the readout will be near 0 V. If a signal is applied,
then a detected level will be present. For an NTSC signal, the detected
level will be about 1.1 V. Other signals have different detected levels as a
function of their level and bandwidth. It is very useful to compare levels
from different channels with the same signal applied.
NO
TE. If the channel peak l evels are not correct, replace the module.
e. Press the down (▼) arrow to select MODULE 3. Proceed as follows:
If module 3 is not installed, the message “No module present” is
displayed. In this case, proceed to step 9.
If module 3 is installed and has HREF/Relay channels, then perform
steps b through d for module 3.
f. Press the down (▼) arrow to select MODULE 4. Proceed as follows:
If module 4 is not installed, the message “No module present” is
displayed. In this case, proceed to step 9.
If module 4 is installed and has HREF/Relay channels, then perform
steps b through d for module 4.
4–12 ECO8000 Series Service Manual
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