Ritron AIERIT27-150, Руководство пользователя

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4
Operation
Once installed, operating the LPA-Series radio receiver requires no human contact.
Portable, base station or mobile 2-way radios can deliver voice messages directly
to a PA system with a simple press of the PTT button for either live or recorded
playback. This section describes the subtle differences in operation for various
LPA-Series
options and installations.
4.1
Basic Operation
Basic operation is defined as a LPA-Series receiver programmed on a dedicated radio frequency with a QC or
DQC code. The receiver is also programmed for 50% volume and a pre-announce tone.
1. Move to an area that is away from any PA system speaker to prevent feedback.
y PA system speaker. 2. Be sure the microphone on the calling radio is pointed away from an
3. Set the portable, base station, or mobile radio to the LPA channel.
4. Monitor the channel before transmitting to be sure there are no other radio users on the LPA frequency.
5. Press and hold the PTT button and pause for about 1 second, allowing the pre-announce tone to be heard.
6. Speak into the radio microphone to broadcast your message over the PA system speakers. If other radios
essage. are operating on the LPA channel they will also hear your m
7. Release the PTT button when your message is complete.
8. Return the portable, base station, or mobile radio to the normal operating channel.
Section 4 Operation 19
4.2
Selcall Paging
O 2 access the PA system.
y PA system speaker.
mitting to be sure there are no other radio users on the LPA frequency.
7. PA system speakers. If other radios
essage.
9. Return the portable, base station, or mobile radio to the normal operating channel.
th
To access the LPA-Series receiver the 2-way radio must be programmed to send the correct Selcall code every
time the PTT is pressed. The user simply presses the 2-way radio’s PTT and speaks while on the LPA channel.
nly -way radios programmed to send the correct Selcall code on the LPA channel can
1. Move to an area that is away from any PA system speaker to prevent feedback.
2. Be sure the microphone on the calling radio is pointed away from an
3. Set the portable, base station, or mobile radio to the LPA channel.
4. Monitor the channel before trans
5. Press and hold the PTT button.
6. Wait until the entire Selcall code has been sent, and then an additional 1 second for the pre-announce tone.
Speak into the radio microphone to broadcast your message over the
are operating on the LPA channel they will also hear your m
8. Release the PTT button when your message is complete.
Wi Selcall Paging operation:
Selcall paging can be used in conjunction with QC or DQC for added • security. The 2-way radio and the
LPA receiver must be programmed for the same QC or DQC code
.