3M DELTA Series - Page 13

D. EXTERNAL REMOTE CONTROL CONNECTIONS
channels to the corresponding +, or equivalent ter 
minal of the external source in order to prevent
audio phase reversals.
Figure 2-3: DELTA I & H REAR PANEL
Figure 2-4: DELTA in REAR PANEL
Figure 2-5: DELTA IV REAR PANEL
Remote control for Delta Series units is via rear
panel female Jones type connectors. The pin-out
connections listed below indicate typical remote
control functions. Figures 2-6 and 2-7 illustrate many
of the common remotes used and the proper meth 
od for making the connections.
In some cases, unshielded lines may be toler 
ated for remote switch functions. However, it is rec 
ommended that shielded cables be used in all in 
stallations.
All switches shown are momentary action, single
pole. Typical switching current is 15 ma. at a maxi 
mum of 5 VDC.
DELTA L H, HI REPRODUCER REMOTE CONNECTOR
Pin# Function
1 Logic Common, Switch Common
2 Remote Start (Run Ground)
3 Remote Cue Switch
4 Remote Cue Lamp
5 Remote Stop (Stop Ground)
6 Remote Run Lamp (Ground)
7 Remote Ready Lamp (Ground) — follows ready
lamp function, when lamp is at ground. When
lamp is on, signal is at ground. When lamp is
off, the open collector transistor is off. CAUTION:
ready ground follows condition of front panel
ready lamp. If ready lamp is strapped to flash
ready ground will change states synchronous
with front panel ready lamp. Maximum open
circuit voltage 25 VDC, maximum current at
200 ma.
8 +5 Volts
9 Auxiliary Start Pulse — momentary (100 msec)
pulse to ground upon start of cartridge — open
collector. May be used to start an external
clock or timer. Maximum 25 VDC open circuit
voltage, at 200 ma
10 Secondary Cue Relay (Open Collector) — 200
ma. switching current (sinking), maximum 25
VDC open circuit voltage, switches io ground
upon sensing of secondary cue.
11 Secondary Cue Relay (Normally Open)
12 Tertiary Cue Relay (Open Collector) — switches
to ground upon sensing of tertiary cue.
13 Tertiary Cue Relay (Normally Open)
14 Cue Audio Output — Nominal voltage is ,5V
RMS.
15 Cue Audio Ground
2-3