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Unity 4650 User's Manual
Audio/video
This test puts out a video test pattern and audio test tones to allow verification
check
of video and audio connections. The video pattern is vertical color bars. On
Port 1, the audio is a slowly pulsing (triangle-wave) tone with a higher fre-
quency on Right than on Left. On Port 2, the audio is a slowly pulsing (sine-
wave) tone also with higher frequency on Right than on Left. Use the follow-
ing steps to enable or disable this audio/video test mode:
a) From the RF Input Check screen, press the right-arrow button to bring
b) The Audio/Video Check screen will indicate that the test mode is either
c) Press ENT to switch the test mode between "Enabled" and "Disabled".
d) Press the left-arrow button to return to the RF Input Check screen or
Relay Pulse
This test may be used to verify connections to the alarm or cue relays. Each
Check
relay, as it is tested, will energize and de-energize about once per second. Use
the following steps to check these connections:
a) From the Audio/Video Check screen, press the right-arrow button to
b) Press ENT to display the Relay 1 Check screen.
c) The Relay Check screen will indicate that the relay is On or Off as it
d) Press the right-arrow button to test the remaining cue relays and the
e) Press ESC to return to the Relay Check screen.
800034-01 Rev. A
up the Audio/Video Check screen.
"Enabled" or "Disabled".
ESC to return to the Installation Testing screen.
display the Relay Pulse Check screen.
switches on and off about once per second. At the same time, a user
should see the ohm-meter reading between the output contacts alternate
between zero and (virtually) infinite.
alarm relay.
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