18
A and B Intercom Controls and Indicator Lights
The A portion of this area of the panel is for Intercom Channel A, and the B portion is for Intercom Channel 2. Their
operation is identical.
h
The
SELECT button
(
4
) is used to select 2-Wire (
3
) or 4-Wire (
6
) or both. The 2-W indicator light will
display red (muted) if wired intercom power is not detected at the 2-W connector on the rear panel of the base
station. The 2-W indicator light will display green if 2-W equipment which supplies power is plugged into the
2-W connector on the rear panel of the base station, or if the respective bypass jumper inside the unit has
been set.
h
The INPUT controls (
2
and
7
) are used to adjust the audio levels going to COMMUNICATOR
®
s or a local
headset, coming in from 2-W and 4-W equipment connected to the base station.
h
The OUTPUT controls (
1
and
8
) are used to adjust the audio levels coming in from Communicators or a
local headset going out to 2-W and 4-W equipment connected to the base station.
h
The
AUTO NULL button
(
5
) is used to eliminate echo caused by mismatched line characteristics of an
external 2-W system.
CAUTION:
Before pressing the
AUTO NULL button
, be sure there are no open microphones on the wired
system. Use a pen or similar pointed object to depress and hold the
AUTO NULL button
for 2 seconds.
NOTE:
If you are not connecting other equipment, go on to
System Operation
(pg. 20).
Interfacing with Auxiliary Audio Equipment
ISO Audio can be routed to the AUX OUT connector for page or stage announce.
h
If using auxiliary audio equipment, such as another intercom or an audio player, connect its output cable
connector (male) to the AUX IN connector (
9
), and/or its input cable connector (female) to the AUX OUT
connector (
10
).
6
8
7
5
1
3
4
2
9
10
The cable connectors must be 3-pin XLR type for ba20dBu Pin 1 = Ground maximum audio input/output, with
Pin 2 = Audio + the following pin connections:
Pin 1 = Ground
Pin 2 = Audio +
Pin 3 = Audio –
Base station rear panel
Base station
front panel
1
1
2
2
3
3
Summary of Contents for HME DX410
Page 35: ...35 APPENDIX E AUDIO ROUTING DIAGRAM CH B 2WT04W CH B 4WT02W CH A 4WT02W CH A 2WT04W...
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