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TEMPERATURE. D
isplays the temperature of v ar ious internal components. OK is
displayed as the status when a temperature is within the operating range; WA R N
is displayed when a temperature is out of range. Press the left (◄)orright(►)
arrow button to view additional temperature readouts.
CH<n> PRI VS THRES. Displays the signal level for t he selected primary channel
versus the c
onfigured threshold level. Press the left (◄)orright(►) arrow
button to view the threshold readout for each installed channel. When the readout
is around +3.0 dB (+4.0 dB for LTC channels), then the signal level is correct.
A readout in the range of –13.9 d B indicates a missing signal (the level value
depends on the selected threshold level).
NOTE. If the HREF/Relay board outputs are not terminated, it will change the
level re
adings on the selected channel (primary or backup). The unselected
primary or backup channel is terminated in the ECO8000 Series, but the selected
primary o r backup channel drives through to the output. Be sure to connect the
channel output to the actual load during setup to insure proper configuration.
Readout levels above +3.0 dB may be normal depending on the signal type. Black
signals levels should be around +3.0 d B. However, color bar signals will have a
higher level. Signals with a higher threshold level will switch slower.
CH<n> BACK VS THRES. Displays the signal level for the selected backup
channel versus the configured threshold level. Press the left (◄)orright(►)
arrow button to view the threshold readout for each installed channel. When the
rea
dout is around +3.0 dB (+4.0 dB for LTC channels), then the signal level is
correct. A readout in the range of –13.9 dB indicates a missing signal (the level
value depends on the selected threshold level).
MAIN BOARD. Displays the Main board voltages. OK is displayed as the status
when a voltage is within the operating range; WA R N is displayed when a voltage
i
s out of range. Press the left (◄)orright(►) arrow button to view additional
voltage readouts.
MODULE <1–4>. Displays the voltages for the selected module (1 to 4). OK is
displayed as the status when a voltage is within the operating range; WA R N
is displayed when a voltage is out of range. If a module is not installed, No
module present is displayed. Press the left (◄)orright(►) arrow button to
view additional voltage readouts.
NOTE. Some of the voltage readouts are from the power supplies; these readout
have the OK and WARN limits. Other voltage readouts are from the peak detectors
on the input signal or the internal thresholds. These other voltage readouts vary
depending on the applied signals and the instrument settings, and are intended to
be used only for troubleshooting and service activities.
ECO8000 Series Automatic Changeover Unit User Manual 91
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