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 interdigit 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 number
1 with higher priority). However, the CODE CALL
may be out of sequence for the period that this
occurs.
TONE TABLE
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, 698Hz, 3.9 seconds (approx.) 2 cycle minimum
* DUAL CHIME, 880Hz/698Hz
* BURST, 880Hz, 1/2 second on, 2 seconds minimum
* STEADY, 880Hz, 3 seconds minimum
TeleBell 986/784Hz, 11 per second, 10 minimum
Chimes, 986, 784, 659, 523Hz order
Chimes, 880, 698, 587, 494Hz order
CODE CALL CHIME, 784Hz (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, 659Hz, center 1 cycle (approx.) 0.3Hz
> WHOOP (yelp) 659Hz, 2.5Hz, 4 minimum
> WARBLE, 494/986Hz, 6Hz rate
> STEADY 698Hz, 1 second minimum
> BURST (pulse), 494Hz, 4.5Hz rate
Chimes 659/784Hz
Chimes 986/784Hz
CODE CALL CHIME, 784Hz (V-9923A Standard)
NOTE: * denotes V-9927 compatible tones
> denotes “USA Standard Immediate Evacuation signal for industrial areas”
2
