Kramer Electronics VP-8x4 - Manual (Page 17)

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Connecting the VP-8x4 8x4 VGA / UXGA Matrix Switcher
14
6.6 Cascading Machines
You can cascade up to 16 VP-8x4 units with control from a PC or serial
controller (see Figure 7).
To cascade up to 16 individual
VP-8x4 units via RS-485, do the following:
1. Connect the VGA/UXGA sources and acceptors, as section 6.1 describes.
2. Connect the RS-232 port
1 on the first VP-8x4 unit to the PC using the
null-modem adapter provided with the machine (recommended), as section
6.2 describes.
3. Connect the RS-485 terminal block port on the first unit to the RS-485 port
on the second VP-8x4 unit and so on, connecting all the RS-485 ports.
4. Set the dipswitches, as section 6.4 describes:
Set the first VP-8x4 unit as Machine # 1 and the following 15 VP-8x4
units as Machine # 2 to Machine # 16, according to Table 6
Set DIP 8 ON on the first and last VP-8x4 units (terminating the
RS-485 line at 120 ). Set DIP 8 OFF on the other VP-8x4 units
Set DIP 5, DIP 6 and DIP 7 OFF on all VP-8x4 units
1 Alternatively, the RS-485 port could be used for PC control (instead of RS-232)