Power-up and testing
6.14 EST3 Installation and Service Manual
3-ASU Audio Source Unit
1. Verify that the 3-ASU is installed using accepted
workmanship standards.
2. The audio sub-system messages and configuration
information must be downloaded into the Audio Source
Unit, using the System Definition Utility (SDU) program,
before starting testing. Verify that the 3-ASUMX expansion
card, if used, is firmly seated in its connector.
3. Verify the wiring to all devices.
4. Starting with the network in the normal condition, use the
Status command to verify all amplifiers are communicating
over the network.
5. Disconnect the network audio communications wiring
(TB1-1/2) from the 3-ASU, and verify that all the audio
amplifiers connected to the network appear in the Trouble
queue. Restore the connection.
6. If a supervised remote microphone is used, disconnect the
remote microphone wiring (TB1-11 & TB1-12) from the
3-ASU. Verify a remote microphone trouble is annunciated.
7. Press the All Call switch on the front of the 3-ASU. Verify
the All Call LED next to the switch lights. Remove the
microphone from its bracket, press the Push-To-Talk (PTT)
switch. Verify that that the preannouncement tone (if
configured) sounds, followed by the Ready to Page LED
lighting. Speak into the microphone and verify that the Page
Level Meter is operational, and the message is being
transmitted over all speakers.
3-FTCU Firefighter Telephone Unit
1. Verify that the 3-FTCU is installed using accepted
workmanship standards.
2. Verify the wiring to all devices. The SIGA-CC1 should be
set to personality code 6.
3. Verify that the 3-FTCU display indicates: “0 Calls Pending”
and “Unit: OK.”
4. Take the master handset off-hook. Verify that the display
indicates: “Handset off hook..” Replace the master handset
on-hook.
5. Take a firefighter telephone off-hook (plug a phone in a
phone jack). Verify that the incoming call buzzer sounds, the
display indicates “1 Calls Pending,” the location of the
incoming call is displayed in reversed text, and “0 calls
connected” is shown on the display. Silence the buzzer by