Wegener UNITY4650, Руководство пользователя

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Unity 4650 User’s Manual
800034-01 Rev. A 36 wegener.com
Audio/video
check This test puts out a video test pattern and audio test tones to allow verification
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
up the Audio/Video Check screen.
b) The Audio/Video Check screen will indicate that the test mode is either
"Enabled" or "Disabled".
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
ESC
to return to the Installation Testing screen.
Relay Pulse
Check This test may be used to verify connections to the alarm or cue relays. Each
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
display the Relay Pulse Check screen.
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
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.
d) Press the right-arrow button to test the remaining cue relays and the
alarm relay.
e) Press
ESC
to return to the Relay Check screen.