947926
2
OPERATION
All Tones (except Code Call)
Operation of the V-9927A is accomplished by
applying a connection between the COM
(Common) terminal on the terminal block and
the desired tone # (1-8).
The Tone selected by terminal number 1 has
priority over others. If multiple tone inputs are
being used, it is possible to sequence tones by
closing the appropriate contacts in the desired
sequence. However, Tone number 1 will always
be placed first on the list when it has been
activated.
If multiple tones are selected at the same time,
the LOWEST tone number will have priority. If
the lowest contact is open, then the next lowest
tone number will be activated.
When a Tone is activated the INPUT source will
be faded out in 0.75 seconds if P5 is out or will
be faded out in 0.25 seconds if P5 is IN.
The V-9927A has a buffer for 32 tones. If more
than 32 tones are entered within a short period,
the V-9927A will drop the last tone entered
Figure 2 illustrates several of the ways the
V-9927A can be used with other Valcom
equipment.
Code Call Operation
When the V-9927A is connected to the V-9923A
code call unit, the V-9927A will respond to the
contact closure inputs and issue single chimes in
response (See Figure 2).
At the beginning of a Code Call sequence, the
INPUT source will be faded down about 6dB. It
will remain at this level until the CODE CALL
sequence has completed (including the inter digit
time). At that time, the INPUT source will be
faded back up to normal level.
When using the CODE CALL option with other
tone options, the CODE CALL may be
interrupted to place other tones in the sequence
(including Tone #1 with higher priority).
However, the CODE CALL may be out of
sequence for the period that this occurs.
TONE TABLE
NOTE: * denotes V-9927 compatible tones
CONNECTION
ON
OPTION
BLOCK
DESCRIPTION
JP1
P3
COM - TONE 1
COM - TONE 2
COM - TONE 3
COM - TONE 4
COM - TONE 5
COM - TONE 6
COM - TONE 7
COM - TONE 8
IN
IN
IN
IN
IN
IN
IN
IN
* WHOOP, 698 Hz, 3.9 sec (approx.)/cycle 2 cycle min.
* DUAL CHIME, 880 Hz/698 Hz
* BURST, 880 Hz, 1/2 sec on, 2 min.
* STEADY, 880 Hz, 3 sec. min.
TeleBell 986/784 Hz, 11/sec, 10 minimum
Chimes, 986, 784, 659, 523 Hz order
Chimes, 880, 698, 587, 494 Hz order
CODE CALL CHIME, 784 Hz (V-9923A standard)
COM - TONE 1
COM - TONE 2
COM - TONE 3
COM - TONE 4
COM - TONE 5
COM - TONE 6
COM - TONE 7
COM - TONE 8
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
SIREN, 659 Hz, center 1 cycle approx. 0.3 Hz
WHOOP (yelp) 659 Hz, 2.5 Hz, 4 min.
WARBLE, 494/986 Hz, 6 Hz rate
STEADY 698 Hz, 1 sec. minimum
BURST (pulse), 494 Hz, 4.5 Hz rate
Chimes 659/784 Hz
Chimes 986/784 Hz
CODE CALL CHIME, 784 Hz (V-9923A Standard)
