9
NUMBER OF DIGITS
J6
J5
RELAY OUTPUT MODE
J3
J4
1
X
X
LATCHING
O
O
2
X
O
MOMENTARY
X
O
3
O
X
ALTERNATE
O
X
4
O
O
MOMENTARY OUTPUT
FOR BOTH ON & OFF
X
X
X
= JUMPER INSTALLED
O
= JUMPER REMOVED
R12
= INPUT SIGNAL LEVEL RANGE ADJUSTMENT
JUMPER
OPEN
SHORTED
INPUT IMPEDANCE
J2
10k
Ω
◼
600
Ω
INPUT
TERMINATION
J1
BALANCED UNBALANCED
◼
5 MINUTE
RESTORAL
J7
ENABLED
◼
DISABLED
MOMENTARY
OUTPUT FOR BOTH
ON & OFF
J3, J4
DISABLED
◼
ENABLED
◼
= FACTORY SETTING
FIGURE 3
Jumper Locations
Input Impedance:
Input impedance may be either 10 k
Ω
or 600
Ω
. The
J2
jumper determines the input impedance
of the 3185E. Install a jumper at position
J2
to terminate the audio input in 600
Ω
. Consult
FIGURE 3 for the
J2
jumper location.
Input Balanced/Unbalanced:
The input may be selected to be balanced or unbalanced. The
J1
jumper determines whether
the input is balanced or unbalanced. Removing the short from
J1
will make the input balanced.
Consult FIGURE 3 for the
J1
jumper location.
