28
MDS TransNET 900 I&O Guide
MDS 05-2708A01, Rev. B
AMASK [0000 0000–FFFF FFFF]
This command sets the alarm bits that cause the alarm output signal to be
triggered. The
PWR
LED will still flash for all alarms, but the alarm output
signal will only be activated for those alarms that have the corresponding
mask bit set. The hex value for the mask aligns directly with the hex value for
the
ALARM
command. The default is
FFFF FFFF
. Through proper use of the
AMASK
command, it is possible to tailor the alarm response of the radio.
Contact the factory for more information on configuring the alarm mask.
ASENSE [HI/LO]
This command is used to set the sense of the alarm output at Pin 6 of the
DATA
connector. The default is
HI
which means an alarm is present when an RS-232
high is on Pin 6.
BAUD [xxxxx abc]
This command sets or displays the communication attributes for the normal
payload communications through the
DATA
port. The command has no effect
on the RJ-11
DIAG(NOSTICS)
port.
The first parameter (
xxxxx
) is baud rate. Baud rate is specified in
bits-per-second and must be one of the following speeds: 1200, 2400, 4800,
9600, 19200, 38400, 57600, or 115200. At baud rates of 19200 bps or less,
the radio can support unlimited continuous data transmission at any hop rate.
The second parameter of the
BAUD
command (
abc
) is a 3-character block
indicating how the data is encoded. The following is a breakdown of each
character’s meaning:
a
= Data bits (
7
or
8
)
b
= Parity (
N
for None,
O
for Odd,
E
for Even)
c
= Stop bits (
1
or
2
)
The factory default setting is 9600 baud, 8 data bits, no parity, 1 stop bit
(Example:
19200 8N1
).
NOTE:
7N1, 8O2, and 8E2 are invalid communication settings and are not supported
by the transceiver.
BUFF [ON, OFF]
This command sets or displays the received data handling mode of the radio.
The command parameter is either
ON
or
OFF
. (The default is
OFF
.) The
setting of this parameter affects the timing of received data sent out the
DATA
connector. Data transmitted over the air by the radio is unaffected by the
BUFF
setting.
If data buffering is set to
OFF
, the radio will operate with the lowest possible
average latency. Data bytes are sent out the
DATA
port as soon as an incoming
RF data frame is processed. Average and typical latency will both be below
10 ms, but idle character gaps may be introduced into the outgoing data flow.
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