Videotec DCFIT, Operating Instructions Manual, Page: 30 / 68

Page. 10 DCFIT_5002
Controlling the SW164OSM Matrix with a DCJ, DCK, DCT, DCTEL or DCBD model keyboard
Please follow the steps given below for correct installation:
•
Set the keyboard protocol to SW164OSM (DCTEL/ DCBD, see keyboard manual) or VideoOSM (DCJ
and DCT, see keyboard manual) at 1200 or 9600 baud depending on the baud rate set on the
SW164OSM matrix.
•
Set the dip switches on SW1 in the DCFIT appropriately. Configure Dip 1 according to the baud rate
used for the matrix and the keyboard. Set Dip 2 and 3 to the OFF position. Set Dip4 to the ON
position.
•
Set both JP1 and JP2 jumpers to position A (see configuration of JP1 and JP2 jumpers on page 6)
•
Connect the SW164OSM matrix with the DCFIT (Current Loop, max. 1500 metres)
•
Connect the keyboard with the DCFIT (RS485, max. 1200 metres)
•
Power the DCFIT (terminals GND and 12V
=
J1) using a local power supply
The connection between the SW164OSM Matrix and the DCFIT must be carried out through the Current
Loop line on the GND, TX and RX terminals of J2. A RJ-jack box and a telephone cable (supplied with the
keyboard) must be used for the connection with the matrix, according to the following table:
DCFIT
Terminals of J2
SW164OSM Matrix
(cable colour on RJ-JACK box)
RX (Current Loop) ---- Blue (TX CL)
GND (Current Loop) ---- Green (GND CL)
TX (Current Loop) ---- Black (RX CL)
Connection of the keyboard (DCJ, DCK, DCT, DCTEL or DCBD) must be carried out through the RS485 line
on the A and B terminals of J1. A RJ-jack box and a telephone cable (supplied with the keyboard) must be
used for the connection, according to the following table:
DCFIT
Terminals of J1
DCJ, DCK, DCT
DCTEL, DCBD keyboards
(cable colour on RJ-JACK box)
A RS485 ---- White (TX-485A)
B RS485 ---- Yellow (TX-485B)