42
MDS 4790/9790 Series I/O Guide
MDS 05-3438A01, Rev. F
Data Interface Baud
Rate
BAUD [xxxxx abc]
The
BAUD
command displays or sets the communication attributes for
the
DATA INTERFACE
port. The command has no effect on the RJ-11
DIAG
(nostics) port.
Entering the
BAUD
command alone displays the baud rate along with
asynchronous data attributes. Entering the
BAUD
command followed by
one or more parameters resets the data port attributes.
BAUD xxxxx abc
Example:
BAUD
4800 8N1
The first parameter,
xxxxx
, is the baud rate. Baud rate is specified in
bits-per-second, and must be one of the following rates: 110, 300, 1200,
2400, 4800, 9600, 19200, or 38400.
The second parameter of the
BAUD
command is a 3-character block spec-
ifying asynchronous data attributes:
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.
NOTE:
7N1
,
8O2
, and
8E2
are invalid communication settings.
If the data rate is faster than the radio’s baud rate setting, the
DATA
Port
accepts a minimum of 500 data bytes in a single continuous data trans-
mission. At baud rates of 9600 bps or less, the radio supports unlimited
continuous data transmission. Under this condition, the
DATA
Port hand-
shaking (CTS) would keep toggling on/off for a long transmission, or
the buffer might be able to absorb a smaller amount of data. Avoid
mis-matched data rates whenever possible.
Data Interface
Buffering
BUFF [ON/OFF
]
This command displays or sets the received data handling mode.
Entering the
BUFF
command alone shows whether the mode is seamless
(
ON
), or fast byte throughput (
OFF
). Entering the
BUFF
command fol-
lowed by a parameter resets the received data handling mode. The
ON
parameter sets the radio to seamless data mode. The
OFF
parameter sets
the radio to fast byte throughput mode. The default is seamless data
mode.
Baud Rate/Format screen
,
Page 70
A
B
Data Buffering screen
,
Page 74
A
B
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