Kramer Electronics VP-1201 User Manual

Page 28

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Connecting a VP-1201 12x1 XGA Switcher / Scanner

5.5 Connecting Several VP-1201 Machines

For certain applications, you may need more than just 12 inputs. Cascading

VP-1201 units enables you to expand the number of inputs.
You can cascade:

Up to 16 individual

VP-1201 units in an Individual Control configuration

(see section 5.5.1)

For example, 16

VP-1201 units, connected via RS-232 and RS-485, will

operate separately: forming 16 12x1 separate machines (see Figure 25)
Up to 8 interconnected

VP-1201 units in an Input Expansion

configuration (see section 5.5.2)

For example, 3

VP-1201 units interconnected in this configuration will

form a 36x1 machine (see Figure 26)

5.5.1

Connecting Several VP-1201 Units – Individual Control Configuration

To cascade up to 16 individual

VP-1201 units (see Figure 25), do the following:

1. Connect the video sources and acceptors as section 5 describes.
2. Turn ON the power (not illustrated).
3. Connect the RS-232 port on the first

VP-1201 unit to the PC using the

Null-modem adapter provided with the machine (recommended), as

section 5.2 describes

4. Connect the RS-485 terminal block port on the first

VP-1201 unit to the

RS-485 port on the second

VP-1201 unit and so on, connecting all the

RS-485 ports.

5. Set the Machine dipswitches as follows:

Set the CASCADE dipswitches on all units to OFF
Set the first

VP-1201 unit MACH. # dipswitches to Machine # 1 and

the following units to Machine # 2, Machine # 3, and so on – up to

the last connected

VP-1201 unit (according to Table 10)

Set the RS-485 TERM dipswitch ON on the first (Master) and last

VP-1201 units (terminating the RS-485 line) and set OFF on the

remaining units
Set the other dipswitches according to section 5.7.3 (SCAN) and

section 5.7.5 (VALID ONLY)

Or connect via the ETHERNET port as section 5.6 describes