Operation
When interfacing the PA-2A to a paging port, the TALK BATTERY switch (DIP switch 4) must be OFF. The PA-2A
will amplify all signals sent from the paging port. The page alert tone (DIP switch 3) is not an available option.
When interfacing with an unused telephone line input (trunk port), the TALK BATTERY switch (DIP switch 4) must be
ON and the PA-2A must be connected to an unused trunk port. Simply access that trunk port and talk into the handset
to page. A page alert tone may be enabled or disabled with DIP switch 3. When the page alert tone is enabled, paging
will interrupt and hold off loud ringing for the duration of the page.
In both instances, the PA-2A can monitor 1 - 6 C.O. lines, 1 - 6 analog PABX/KSU stations or a dry contact closure
for loud ringing. The PA-2A will produce the selected ringing tone when ring voltage is detected on these line inputs
or a contact is closed on pins 3 and 4. Select the electronic warble tone (traditional loud ringing) for noisy areas. The
softer chime tones work well in less noisy environments.
7
Sound Output Specifications
All tones require a minimum of 180ms of ringing voltage (or contact closure) to trigger. Once triggered, the electronic
warble will run continuously until ringing stops (or contacts open). All other tones (double gong, quadruple chime,
doorbell) will run through their full sequence once and will not cycle again until the ringing stops (or contact opens) for
at least 50ms and a second ring signal (or contact closure) triggers them again.
A. Electronic Warble (Traditional Loud Ringer)
2 seconds
Frequency alternates between 1440 Hz and
1140 Hz 20 times per second.
On
Off
575 Hz
B. Double Gong (Two “Gong” Tones)
575 Hz
2.2 sec
0.74
sec
On
Off
C. Quadruple Chime (Four Descending Chime Tones)
0.36
sec
0.36
sec
0.36
sec
2.2 sec
888 Hz 699 Hz 584 Hz 492 Hz
On
Off
D. Door Chime (Ding-Dong)
On
Off
0.36
sec
794 Hz
526 Hz
2.7
sec
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