Nautel VX150, Operation & Maintenance Manual

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VX150 TO VX2 OPERATIONS & MAINTENANCE MANUAL OPERATING THE TRANSMITTER
VERSION 1.0 2022-12-08 PAGE 2.2.39
RDS Remote Protocol
.
The following information is intended to assist users with remote RDS settings
using the ASCII protocol.
Assigning Settings: To assign a value to a setting, send the setting name, the equal sign (=) and the
desired value. If the setting is valid, the exciter responds “OK”. If the setting is invalid, the exciter
responds “NO”.
Examples: PI=1248 //set the PI code to 0x1248
OK // exciter responds with OK
TA=2 // set the traffic announcement to 2 (bad command; only values 0 or 1 allowed)
NO // exciter responds with NO
Querying Settings: To determine the current value of a setting, type the setting name with a question
mark (?) instead of an equal sign (=).
Examples: PI? //query the current PI code
1248 // exciter responds with “1248”, the current PI code
Other Considerations:
Initial Values and Preset Changes
On startup, or when the RDS settings in the active preset differ from the last ones loaded, the preset’s
initial RDS settings (PS, PI, PTY, PTYN, RT, AF, etc.) will be loaded. If there is an active data source (UECP
or ASCII via serial or IP), these settings may be updated externally.
The RDS settings from the preset will only be loaded again if they change, otherwise the working set
from the external data source will continue to be used. This allows unrelated preset changes to adjust
other settings without affecting RDS functionality.
Real Time Clock
The Exciter/Control PWB has a super capacitor backed real-time clock that keeps track of the time and
date if configured for ASCII or UECP.
After every power failure, the transmitter checks if the super capacitor is fully discharged and the real-
time clock stopped. If it has stopped, then an Invalid Date & Time alarm will be present. As long as this
alarm is active, the RDS generator will not broadcast the time and date regardless of any commands
given via the UECP or ASCII protocols to enable it. It is possible to clear the alarm by setting the correct
time, either using the ASCII or UECP protocols, or using the AUI or FPUI, or by enabling NTP if the
transmitter has an always-available TCP/IP connection to a compatible time server.