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7
SRC-16 Plus Installation and Operation Manual
INSPECTION
Relay Outputs:
Each of the sixteen relays is supplied with SPDT (form C) dry contacts that are
jumper selectable for either normally open (N.O) or normally closed (N.C) opera-
tion. They are set to normally open from the factory. The sixteen green output LEDs
on the front panel indicate which relays are active. External equipment to be con-
trolled should be connected to the terminals labeled K1, K1-K16,K16.
NOTE: If mechanical latching relays are required, we suggest the Broadcast Tools
LR-5 or LR-5 Plus (4PDT & SPST) mechanical latching relay.
Relay output terminal block connection layout
(Top Row, TB2 1-16)
K9 K9
K10
K10
K11
K11
K12
K12
K13
K13
K14
K14
K15
K15 K16 K16
K1 K1
K2
K2
K3
K3
K4
K4
K5
K5
K6
K6
K7
K7
K8 K8
(Bottom Row, TB2 1-16)
NOTE: Please refer to the appendix for configuration examples.
Expansion Ports
Used to connect multiple SRC-16 Pluses using the included red Cat5 patch cable.
RS-232 Serial Connection
The RS-232 serial connection is made to the male DB-9 connector on the back of
the SRC-16 Plus. The headers labeled “RS-232” “NNRR” on the SRC’s printed cir-
cuit board adjacent to the RS-232 DB-9 connector can be used to reverse the RS-232
transmit and receive pins on the DB-9. The factory setting is the “NN” position
where pin 5 = ground, pin 2 = transmit and pin 3 = receive. In the “RR” position pin
5 = ground, pin 2 = receive, pin 3 = transmit.
Note:
An optional USB to RS-232 adapter cable may be required if your PC isn’t
equipped with a RS-232 COM port. The default protocol is as follows: 9600, N, 8, 1
RS-422/485 Serial Connection
In some cases it’s necessary to use RS-422/485 serial interfaces instead of RS-232.
This can be enabled via jumper settings on the SRC’s printed circuit board. RS-
422/485 serial cable connections must be made to the R-/R+ and T-/T+ connections
on the TB2 terminal blocks. Please limit cable lengths to under 4000 feet.
(Top Row, TB2 17-19)
R-
R+
T-
T+
(Bottom Row, TB2 17-19)
Please refer to the appendix for jumper settings and connection details.
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