Midian DDU-300, Инструкция по эксплуатации

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DDU-300 Manual Rev. 2006.02.22
option must be on.
OFF Do not send data to printer.
ON Send data to printer.
5.6.4 SECURITY SETUP menu
5.6.4.1 Security setting
Allows the security option to be turned on and off. If
turned off, the LOCK/UNLOCK menus will not appear.
ON Enable security feature.
OFF Disable security feature.
5.6.4.2 Password setting
Sets the password required to UNLOCK the menu
system when the Security is turned on. Must be 4
numeric digits.
Range: 4 digits
Default: 0000
5.6.5 ENCODER SETUP menu
5.6.5.1 Keyup Delay setting
This sets the Key-Up Delay, also known as Front
Porch Time. This is the amount of time the DDU will
wait after asserting PTT before sending data over the
air. This time allows for delays introduced by repeaters
and decoding of squelch control signals such as
CTCSS.
Range:
0 to 9 x100 milliseconds
Default: 4 x 100 milliseconds
5.6.5.2 Preamble setting
Normally, the DDU will send just carrier or ‘dead air’
during the Keyup Delay period. Optionally, it can send
a continuous preamble tone during this time. This is
provided primarily for voters.
OFF
no preamble during keyup delay
ON preamble sent during keyup delay
5.6.5.3 COR Polarity setting
Determines which state of the COR (carrier detect)
input is considered the active state. When COR is
active, the radio channel is busy. If the radio is using
PL/CTCSS, it is recommended that the COR Input be
connected to a point which goes active when PL is
detected.
The COR input is used in conjunction with the Busy
Lockout feature. If not connecting the COR input, do
not enable Busy Lockout .
LOW Channel is busy when COR is 0V.
HIGH Channel is busy when COR is 5V.
5.6.5.4 Busy Lockout option
This option prevents the DDU from transmitting on a
busy channel. If this option is ON, the unit will not
transmit when the COR input is in the active state. The
DDU will wait until the channel is clear and then
transmit. When this option is OFF, the unit will
transmit regardless of the state of the COR input.
OFF Transmit regardless of COR input.
ON Do not transmit when channel busy.
5.6.5.5 System ID setting
The scramblers will not accept commands from the
DDU unless the System ID matches that programmed
into the scramblers. The System ID in the scramblers
is set at the factory. Normally, the system ID is 1230
unless a custom System ID was specified when the
scramblers were ordered. Only change this setting if
you know you have a custom System ID.
Range: 4 digits
Default: 1230
5.6.6 REPEATER SETUP menu
5.6.6.1 Repeat Control option
Allows the DDU to control access to a repeater.
Causes the DDU to assert a PTT output to a repeater
upon receipt of either: (1) any ANI in the format
decoded by the DDU or (2) a valid User ID in the user
database. To restrict repeater access to valid User ID’s
only, the Ignore Nonuser option in the CONSOLE
SETUP must be turned ON. Otherwise, any incoming
ANI of the proper format will be considered valid.
Other possible uses of the Repeat Control option
include operation of a horn relay or the enabling of a
PA speaker. Repeater control output can either be the
PTT output, or the MONITOR output (see below).
OFF Repeater control disabled.
ON Repeater control is enabled.
5.6.6.2 Validate Time setting
This sets how long after COR becomes active, that the
repeater will be keyed prior to receiving a valid
decode. This allows time for the incoming ANI to be
broadcast by the repeater before it has been validated.
If no ANI (or valid User ID) has been decoded during
this time, the repeater will be un-keyed. The repeater
will remain un-keyed until COR goes inactive.
If set to 0, the repeater will not be keyed until after the
ANI (or valid User ID) has been decoded.