77
One-to-n connections
The polarity of the host computer signal may be reversed depending on the device.
Some host devices may not have an S.G. terminal.
Connect a
terminal
resistance to the
point furthest
away from the
host.
Short TRM and
RDB.
SDA
SDB
RDA
RDB address 01
TRM.
S.G.
SDA
SDB
RDA
RDB address 09
TRM.
S.G.
SDA
SDB
RDA
RDB address 00
TRM.
S.G.
RS-422 host
RS-485 host
OPT-564
OPT-564
OPT-564
SDA
SDB
RDA
RDB address 31
TRM
S.G.
SDA
SDB
RDA
RDB address 01
TRM.
S.G.
SDA
SDB
RDA
RDB address 00
TRM.
S.G.
OPT-564
OPT-564
OPT-564
Connect a
terminal
resistance to the
point furthest
away from the
host.
Short TRM and
RDB.
RDA
RDB
SDA
SDB
S.G.
RDA
RDB
SDA
SDB
S.G.
Summary of Contents for OPT-564
Page 1: ...DIGITAL TRANSMITTER OPT 564 Instruction Manual EN294 1924B ...
Page 2: ......
Page 12: ......
Page 80: ...68 Frequency Output Shield Frequency counter or other device ...