Owner`s manual

M SERIES DAC
CABLING
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16
2 GND/
DCD
OUT
GND --- / Output Signal Ground(Default) or User
selectable DCD "OUT"
3 RTS TX+ Output 232 - +12V Out
422 - Transmit Data (+)
4 TX TX- Output 232 - Transmit Data
422 - Transmit Data (-)
5 RX RX- Input 232 - Receive Data
422 - Receive Data (-)
6 DSR RX+ --- / Input 232 - Handshake In
422 - Receive Data (+)
7 GND/
DCD IN
GND --- / Input Signal Ground(Default) or User
selectable DCD "IN"
8 CTS HSI Input 232 - Clear To
Send
422 - Handshake
In
Used to enable
or disable the
transmitting of
characters
IMPORTANT: Before you proceed with cabling your equipment to this
module, you should verify the connector type and the pin/signal definitions
for your equipment.
Ports on the V74, V75, and V87 modules have 8-pin modular connectors. Most serial
computers, modems, and printers do not have modular connectors. Therefore,
adapters are required to convert from either DB-25 or DE-9 connectors to modular
connectors. BayTech has a complete line of modular adapters and cables that makes
your installation quick and trouble free.
CAUTION: Do not use 4-wire modular cabling with the V74 & V 75
modules.
V74 & V75 DCD STATUS SELECTION
Each EIA-232 port can be configured so DCD can be an input or output signal by
positioning jumpers on the main board of the module for each individual port. See
V74 & V75 Jumper selection layout(Figures 29 & 30 or V75 Mechanical Layout
Section D.2).
A. GROUND---Pins 2 & 7 of each port are signal ground in the default setting. This
default setting is used in most data acquisition and control applications. Locate the