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9XTend™
OEM
RF
Module
–
Product
Manual
v1.2.4
©
2005
MaxStream,
Inc.
Confidential
&
Proprietary
50
4.4.2.
Adapters
The XTend Development Kit comes with several adapters that support the following functions:
•
Performing Range Tests
•
Testing Cables
•
Connecting to other RS-232 DCE and DTE devices
•
Connecting to terminal blocks or RJ-45 (for RS-485/422 devices)
NULL Modem Adapter (male-to-male)
Part Number: JD2D2-CDN-A (Black, DB-9 M-M) The male-to-male NULL modem adapter is used
to connect two DCE devices. A DCE device connects with a straight-through cable to the male
serial port of a computer (DTE).
Figure
B.5.
Male
NULL
modem
adapter
and
pinouts
Figure
B.6.
Example
of
a
MaxStream
Radio
Modem
(DCE
Device)
connecting
to
another
DCE
device)
NULL Modem Adapter (female-to-female)
Part Number: JD3D3-CDN-A (Gray, DB-9 F-F) The female-to-female NULL modem adapter is
used to verify serial cabling is functioning properly. To test cables, insert the female-to-female
NULL modem adapter in place of a pair of module assemblies (XTIB-R-R interface board + XTend
Module) and test the connection without radio modules in the connection.
Figure
B.7.
Female
NULL
modem
adapter
and
pinouts
Serial Loopback Adapter
Part Number: JD2D3-CDL-A (Red, DB-9 M-F) The serial loopback adapter is used for range
testing. During a range test, the serial loopback adapter configures the module to function as a
repeater by looping serial data back into the radio for retransmission.
Figure
B.8.
Serial
loopback
adapter
and
pinouts
For
use
in
RS
‐
485/422
systems:
DB
‐
9
to
RJ
‐
45
adapters
are
documented
on
p57.