1. GENERAL
INTRODUCTION
The DPM 900 series of desk paging microphones are designed for either
wall or surface mounting. Three basic versions are available; DPM 900
(single zone), DPM 904 (4 zone) and DPM 908 (8 zone).
The single zone type DPM 900 is supplied with a single length of 4-core
screened cable providing balanced mic and input access (PTT)
connections, terminated in a 3 pin XLR and flying lead (for priority contacts).
Multi zone types DPM 904 and DPM 908 are supplied with two 2 metre
lengths of connecting cable; 1 x 4-core screened (mic. and access)
terminated with a 5-pin din and either 7 way or 12 way (zone selection) for
the DPM 904 and DPM 908 respectively.
2.
INSTALLATION AND OPERATION
2.1.
PRECAUTIONS AND PREPARATION.
Avoid siting the equipment in the proximity of mains power supplies and
cables so as to avoid the possibility of hum associated with electro-
magnetic coupling.
3.
CONNECTION DETAILS DPM 900, DPM 904, DPM 908.
3.1
AUDIO ACCESS FOR DPM900:
4-WAY SCREENED CABLE (MIC & ACCESS), TERMINATED IN A 3 PIN
XLR PLUG WITH A FLYING LEAD.
PIN
1
-
BALANCED
MIC
- RED
PIN
2
-
SCREEN
- DRAIN
WIRE
PIN
3
-
BALANCED
MIC
- BLACK
FLYING LEAD -
ACCESS (PTT)
-
GREEN
FLYING LEAD -
ACCESS (PTT)
-
WHITE
3.2
AUDIO ACCESS FOR DPM904 & 908:
4-WAY SCREENED CABLE (MIC & ACCESS), TERMINATED IN 180
°
5-
PIN NON-LOCKING DIN PLUG.
PIN 1
- BALANCED MIC
-
RED
PIN 2
- SCREEN
-
DRAIN WIRE
PIN 3
- BALANCED MIC
-
BLACK
PIN 4
- ACCESS (PTT)
-
GREEN
PIN 5
- ACCESS (PTT)
-
WHITE
NOTE: Pins 4 & 5 are shorted when PTT (press-to-talk) button is pressed.
Publication Code DPM_TIG Issue 1
Page 3 of 6
