HN-291D
Remote Pin-Out, RS-232
Pin Number
Signal
Type
Description
1
DCD
Output
Data Carrier Detect. For remotes, DCD indicates
that the remote has successfully acquired the
hopping pattern.
2 RXD
(CONFIG)
Output
Output for Received Serial data.
2 TXD
(RUN)
Input
Input Serial Data to be transmitted
3 TXD
(CONFIG)
Input
Input Serial Data to be transmitted
3 RXD
(RUN)
Output
Output for Received Serial data.
4
DTR
Input
Data Terminal Ready. Sleep/ wakes radio
transceiver.
5
GND
-
Signal and Chassis Ground
6
DSR
Output
Data Set Ready. Response to DTR.
7
RTS
Input
Request to Send. Gates the flow of receive data
from the radio to the user on or off. In normal
operation signal should be asserted.
8
CTS
Output
Clear to Send. Used to control transmit flow from
the user to the user to the radio. The WIT 2410
radio module supports hardware flow control
only and does not support software flow control
(e.g. Xon-Xoff).
9
Not Used
-
Not Used
NOTE: When the HopNet radios are used as three wire serial devices, DTR and RTS do not
have to be used.
©
2000- 2004 Cirronet
™
Inc
9
M-0910-0002 Rev B