![BBV Ex4 MK2 Installation Manual Download Page 29](http://html1.mh-extra.com/html/bbv/ex4-mk2/ex4-mk2_installation-manual_2714025029.webp)
Tx300-400-1000MK2-1000 Keypad-Ex4 MK2-TxLD Installation Guide 12Jan05.doc
EX4 MK2 (TX1000 system expander)
Page 29
3. INSTALLATION
All necessary cables are provided with each EX-4 to connect to four base units as shown below. Each base
unit requires a RS232 connection to it's keypad connector and also coax from monitor output to EX-4/8.
Base unit number 1 supplies power for the EX-4, to maintain a low resistance path do not extend this RS232
cable. The other RS232 cables can be extended up to 50M. Should a greater distance be require, then a
TxLD can be used to allow operation 500M between EX-4 and base unit.
Video from TX1000
monitor outputs
RS232 TO TX1000 matrix keyboard ports.
RS232 FROM
TX1000 keyboard
Video to monitor via TX1000 keyboard
1:+
9
V
d
c
IN
2:R
S
2
32 IN
3:R
S
2
32 O
U
T
5,7
,8:GN
D
Fig 1. EX-4 connections
Each base unit has a corresponding LED, which flashes on key presses to indicate the selected base unit.
The flash rate is fixed at the keypad baud rate causing the LEDs to not reach full brightness. Simply shield
the LEDs from ambient light if required.
The Power LED is illuminated indicating power is present.
Summary of Contents for Ex4 MK2
Page 34: ... blank for your notes ...
Page 35: ... blank for your notes ...