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RS-232 Accessories Kit contents
9XTend-PKG-R RS-232/485 RF Modem User Guide
96
Adapters
The development kit includes several adapters that facilitate 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).
The following figure shows the Male NULL modem adapter and pinouts.
The following figure shows an example of a Digi Radio Modem (DCE Device) connecting to another DCE device).
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 modem to function as a repeater by looping serial data back into the
radio for retransmission.
The following figure shows a Serial loopback adapter and pinouts.