Kramer Electronics VS-44HDxl - Manual (Page 18)

Connecting Your VS-44HDxl 3G HD/SD-SDI 4x4 Matrix Switcher
15
6.5 Controlling via the RS-485 Port
To cascade up to eight individual VS-44HDxl units 1 , via RS-485 (with control
via a Master Programmable Remote Control system such as the Kramer
RC-3000), as Figure 6 illustrates, do the following:
1. Connect the “A” (+) and “B” (-) PINS on the RS-485 terminal block port
of the RC-3000 to the “A” (+) and “B” (-) PINS, respectively, on each of
the eight VS-44HDxl units. (If using shielded twisted pair cable, the
shield is usually connected to the “G” (Ground) PIN of the first unit).
2. Set the first VS-44HDxl unit as MACHINE # 1 and the following seven
VS-44HDxl units as MACHINE # 2 to MACHINE # 8, according to
Table 3.
MACHINE # 1
MACHINE # 8
KEYBOARD EXTENSION REMOTE CONTACT
RS-485 RS-232 IN RS-232 OUT
12 VDC
1 2 1 2 3 4 5 6 7 8 G 4 6 8 10 3 5 7 9 11 12 14 16
O U T 13 15
IN
RS-485 PINOUT
B
A
_
+
Figure 6: Controlling via RS-485 (for example, using an RC-3000)
6.6 Factory Reset
Press and hold the input buttons 1, 2 and 3 simultaneously for 3 seconds until the
three buttons flash to reset the machine to its default values.
1 Regular and/or dual-link units