575 Hz
B. Double Gong (Two “Gong” Tones)
S
S
o
o
u
u
n
n
d
d
O
O
u
u
t
t
p
p
u
u
t
t
S
S
p
p
e
e
c
c
i
i
f
f
i
i
c
c
a
a
t
t
i
i
o
o
n
n
s
s
575 Hz
2.2 sec
0.74
sec
D. Door Chime (Ding-Dong)
C. Quadruple Chime (Four Descending Chime Tones)
A. Electronic Warble (Traditional Loud Ringer)
Duration of Contact Closure
Frequency alternates between 1440 Hz and 1140 Hz 20 times per second.
0.36
sec
0.36
sec
0.36
sec
2.2 sec
888 Hz
699 Hz
584 Hz
492 Hz
On
Off
On
Off
On
Off
On
Off
0.36
sec
794 Hz
526 Hz
2.7
sec
O
O
p
p
e
e
r
r
a
a
t
t
i
i
o
o
n
n
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.
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.
All tones require a minimum of 180ms of ringing voltage (or contact closure) to trigger. Once triggered, the electronic war-
ble 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.
