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MDS 4790M (MPT 1411) I/O Guide
MDS 05-3628A01, Rev. B
RX Timeout
[NONE, 1-1440]
This screen is used to set or display the RX Timeout Timer duration. This is the
amount of time to wait (in minutes) after the last data receipt before switching over
to the stand-by transceiver board and generating an alarm.
To change the duration, press ENTER, then use the left/right arrow buttons to
select the digit to change. Then use the up/down arrow buttons to increase or
decrease the digit. Repeat for the other digit if necessary. Press ENTER again to
make the change.
To disable the Receive Timeout Timer, set the duration to NONE.
Repeater Mode
This screen is used to set or display the radio’s operation as a repeater. When the
radio is set to operate as a repeater, the screen displays “enabled” (repeater mode
is enabled). When the radio is a non-repeater, the screen displays “disabled”
(repeater mode is disabled).
To change the operating mode, press ENTER, then use the up/down arrow buttons
to select ENABLE (repeater mode) or DISABLE (non-repeater mode). Press
ENTER again to make the change.
RX Mute Mode
This screen is used to set or display the radio’s RX (receive) Muting status. RX
muting may be required when the radio is configured as a full-duplex remote and
is communicating through a repeater station. RX muting prevents the radio from
hearing its own transmissions, which can cause errors in some software
applications.
To change the RX Mute status, press ENTER, then use the up/down arrow buttons
to select ENABLE (RX Mute on) or DISABLE (RX Mute off). Press ENTER again
to make the change.
Continuous
Keying
This screen is used to set or display the radio’s keying mode (continuous or
non-continuous keying). Typically, a master station is set for continuous keying. If
continuous keying is disabled, the radio needs to be keyed with Pin 4 (RTS) of the
interface connector.
To change the keying mode, press ENTER, then use the up/down arrow buttons to
select ENABLE (continuous keying) or DISABLE (non-continuous keying). Press
ENTER again to make the change.
Manual Key
This screen is used to manually key or dekey the transmitter. The transmitter state
can be displayed by selecting
Transmitter Status
from the
Diagnostics
menu
(page 62).
To key the transmitter, press ENTER, then use the up/down arrow buttons to select
ENABLE (manual keying). Press ENTER again to key the transmitter.
RX Timeout
none
Repeater Mode
enabled
REPEATER [ON/OFF]
command, page 38
RX Mute Mode
disabled
RXMUTE command, page
39
Continuous Keying
enabled
CKEY [ON/OFF] command,
page 32
Manual Key
disabled
