A1
Pin #
Function
Description
Signal
Type
Level when
Asserted
Level when
Deasserted
Notes
Applications
1
Amplifier
Output
Used for driving
slave amplifiers;
monitoring amplifi
-
er output voltage
AC or
DC
Can be greater
than ±200V
peak
0V
Used for driving slave amplifiers in
multi-amp systems. Wired to ampli-
fier output. Do not connect to any
impedance of less than 10K ohm.
Used in multi-amplifier systems.
2
Sampled
Common
Load connected
here for Current
sense
AC or
DC
Up to ±2V
peak relative
to Common
0V
Used for driving slave amplifiers in
multi-amp systems, controlled volt-
age or controlled current mode.
Driving Slave Amplifiers:
Amplifier External Reference,
2V peak maximum from PIN 14 (Common).
3
+1 IN
Differential Slave
input
AC or
DC
Can be greater
than ±200V
peak
0V
Only used in multiple amplifier con
-
figurations - Series mode.
Can accept output of PIN 1 (Amplifier Output) OR PIN 2
(Sampled Common) from Master device when in Slave
mode.
4
Interlock
Amplifier Interlock
input
DC
0V to 8V
10V to 15V
When “low”, forces to Standby;
when allowed to float, allows Run (if
amplifier is “Ready”). IMPORTANT:
amplifiers must be configured for
Run mode at startup (factory default)
or the Run button must be pressed
at the amplifier front panel at startup.
Remote to Standby:
Short PIN 4 of amplifier to Digital
Ground (PIN 17) using dry contact switch or optocoupler.
When closed, places amplifier in Standby.
Multi-amplifier Systems, Simultaneous Enable or
Disable of amplifiers:
Daisy-chain Interlock (PIN4)
across amps (if sharing the same Sampled Common
power connections). Optocoupler must be used for multi-
amps in series.
5
Amp Ready
Ready output of
amplifier
DC
0V
–14V
Normally reserved for OPTOC
use; not recommended for normal
customer use. Line has series
resistor and unloaded will go from
0V (not ready) to -15V (ready), with
an OPTOC BNC card the signal will
go from 0V (not ready) to -1.2Vdc
(ready)
Not recommended for normal customer use.
6
I MON +
Differential Current
M
AC or
DC
2105:
5A/V
2110/2120:
20A/V
Output current produced per voltage
detect.
Current Monitoring:
Connect a voltage meter to mon
-
itor the output current being produced by the amplifier.
For unbalanced, for each 1V detected, current output is
5A (2105) or 20A (2110/2120).
7
None
No connection
Not currently used.
8
None
No connection
Not currently used.
9
Blanking
input
Blanking control
DC
0 - 1Vdc
allows normal
operation
3.5 - 5Vdc out-
put is muted
Used in amplifiers with blanking
feature for blanking control.
Blanking Control:
Use an external isolated 5V power
supply to mute the output of the amplifier.
10
Sampled
Common
Amp Analog
Ground; Blanking
Ground
Amplifier ground.
Can be used as Blanking return or as a reference of the
amplifier for status reporting applications. See Over
-
Temp (PIN 11), Run (PIN 12), Overload (PIN 23), and
OverVoltage (PIN 24).
Appendix A: SIM - Interlock I/O Connector Pinouts and Functions