Z4 DataTraq
14
RS-232 Y Cable Assembly
Some RS-232 and Scan Code applications require the Z4 Data Traq to
be operated in “parallel” with a video terminal, so that input to the
attached computer can come from either the video terminal or the Z4
Data Traq. This is sometimes called RS-232 Wedge operation.
A special cable, called a ‘Y’ cable, is required for this method of
operation, and a suitable cable can be ordered from Asp or your dealer,
or can be made up as described below.
D25 Female
on video terminal
D25 Male
to computer
D9 Male
to Z4 DataTraq
1 1
2
9
2
8
3 3
4 4
5 5
6 6
7 7
5
8 8
This wiring assumes that the video terminal is fitted with a D25
Female
connector, and that the data is output from the terminal on pin 2. A
“reverse” version of the ‘Y’ cable, for terminals fitted with a D25
Male
connector, is available on special order.
PC’s with Non-standard Keyboards
Some PC’s (thankfully not many nowdays) are not compatible with the
IBM PC keyboard standard, which means that the Z4 Data Traq cannot
normally be used with them. To overcome these problems, Asp has
written a program called AspKey, which allows data from an RS-232
port to be redirected to the keyboard in software, allowing the Z4 Data
Traq to be connected to a problem computer via an RS-232 port. Full
details of the AspKey program is provided when you purchase AspKey,
but cable details are provided below for completeness. Note that the
cable described in RS-232 Connections to PC’s above is also suitable
for use with AspKey.
PC with D25 Serial Port Connector
PC with D9 Serial Port Connector
Signal D9
Male
BCR End
D25 Female
Computer End
Signal D9
Male
BCR End
D9 Female
Computer End
RD
2 3
RD
2 2
GND
5 7
GND
5 5
Connect
together pins
5, 6, 8 and 20
Connect
together pins
1, 4, 6 and 8
