Broadcast Tools SRC-16 Plus, Installation And Operation Manual

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SRC-16 Plus Installation and Operation Manual
INSPECTION
Rear Panel Description
Power
2.1mm coaxial DC power jack, 7.5 - 12 VDC, center positive.
Chassis Ground (Chs Gnd)
Station ground and cable drain wires should be tied to this chassis ground point.
Status/Logic Inputs
The SRC-16 Plus has sixteen opto-isolated status/logic inputs. Each input is config-
ured at the factory to accept a dry contact closure; we call this the DRY configura-
tion. To use one of the SRC-16 Plus’s status inputs with dry contacts wire the con-
tacts to input channels Ax and Bx (where x is the status/logic input channels num-
ber, 1 thru 16) terminals. A closure between an input’s A and B terminals will cause
the input to go HIGH (turn on.) The sixteen yellow LEDs on the front panel indicate
which inputs are active.
Each input has a four-position configuration header and two jumpers. You can refer
to the jumper layout in the appendix for a detailed view. Each jumper is labeled
(JPx, where x is the status/logic input) and the header pins 1,2,3,4 are used to con-
figure for WET or DRY operation. The factory default is DRY (Switch, relay con-
tact, open collector) with jumpers between 1 & 2 and 3 & 4. In the DRY configu-
ration, the “A” terminal is ground while the “B” terminal is the cathode of the opto-
isolator diode (pulled up to 5 volts through a 2.2K resistor).
If an output that you are interfacing with the SRC-16 Plus provides its own voltage
then you will need to configure the corresponding input for the WET (floating) con-
figuration. In the WET configuration the SRC-16 Plus’s opto-isolated inputs can be
triggered by an input voltage from 5 VDC up to 24 VDC. To change a status/logic
input to WET (floating), remove both jumpers for the input’s configuration header
(labeled JPx) and place ONE jumper over pins 2 & 3. You may then connect the pos-
itive voltage to the input’s “A” terminal (anode) and ground or minus voltage to the
input’s “B” terminal (cathode).
Status/logic input terminal block connection layout
(Top Row, TB1)
A9 B9 A10 B10 A11 B11 A12 B12 A13 B13 A14 B14 A15 B15 A16 B16
A1 B1 A2 B2 A3 B3 A4 B4 A5 B5 A6 B6 A7 B7 A8 B8
(Bottom Row, TB1)
NOTE: Please refer to the appendix for configuration examples and observe
proper polarity.