MDS TransNET 900 Specifications download pdf (Page 40)

30 MDS TransNET Ref. Manual MDS 05-2708A01, Rev. E

The first parameter (xxxxx) is baud rate. Baud rate is specified in

bits-per-second and must be one of the following speeds: 300, 600, 1200,

1800, 2400, 4800, 9600, 19200, 38400, 57600, or 115200. At baud rates of

19200 bps or less, the radio can support unlimited continuous data transmis-

sion 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:

9600 8N1).

NOTE: 7N1, 8O2, and 8E2 are invalid communication settings and are not supported

by the transceiver.

BAND [A, B, C]

Select Sub-Band (Normally used for 2.4 GHz model)

This command sets or displays the receiving and transmit operating band for

the radio.

A = 2.4016–2.4270 GHz

B = 2.4272–2.4526 GHz

C = 2.4528–2.478.2 GHz

NOTE: The same

BAND must be programmed at the time of installation and

must be common across each radio in a given network.

BUFF [ON, OFF]

Data Buffer Mode

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 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.

If data buffering is

ON, the radio will operate in a seamless mode. That is, data

bytes will be sent over the air as quickly as possible, but the receiver will

buffer the data until the entire packet has been collected. The delay introduced

by data buffering is variable and depends on message size and the number of

retransmissions required, but the radio will not create any gaps in the output

data stream. This mode of operation is required for protocols such as

MODBUS™ that do not allow gaps in their data transmission.

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MDS TransNET 900 Specifications Page 40

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