Specifications

947036
3
Setup and Programming
 If using a V-GPS, a V-WMC or a V-D110XX Digital
Clock as a data source, set the clock data correction
interval on these units for “one second”. (Refer to the
individual product manuals for details). If using a V-
DCPI or a VERCA as a data source, program the
Valcom intercom to provide “digital out” and “24-Hour
Enhanced”.
 Using the V-CCU dipswitches set the desired clock
correction intervals using chart 1 below.
Switch
1
Switch
2
Switch
3
Switch
4
1 SEC
Down Up Up Up
1 MIN
Up Down Up Up
10 MIN
Up Up Down Up
1 HR
Up Up Up Down
SLAVE
MODE
Down Down Down Down
CHART 1: CORRECTION INTERVAL
It is advisable to maintain 8 inches of separation between
the cable carrying 2-wire digital clock correction signals
and all other low voltage cables. There is one exception
to this. When using Class Connection or Multipath
systems, 2-wire digital clock correction signals may utilize
spare pairs in dedicated talkback speaker cables. DO
NOT use spare pairs in any other type cable being used
to provide audio to speakers, amplifiers, or local sound
mixers (i.e. VE9121 type devices). For other scenarios,
contact tech support before using spare pairs for 2-wire
digital clock correction. Dedicated clock cabling should
also be used for digital display clocks that will be utilized
to display the word “Fire” or “Bell”.
During initial setup, the V-CCU dipswitches should be set
to send data every second.
Once initial setup is complete:
If the V-CCU is connected to the clocks through
dedicated cabling then the V-CCU dipswitches should be
set to send data every ten minutes.
If the V-CCU is used with a Class Connection VECPU-5,
a VECPU rev 4.02 or higher or a V-CPU4 rev 3.16 or
higher, then the V-CCU dipswitches should be set to
send data every ten minutes.
If the V-CCU is used with digital display clocks that will be
utilized to display the word “Fire” or “Bell”,
then the V-
CCU dipswitches should be set to send data every
second.
Otherwise, when initial setup is complete, change the V-
CCU dipswitches to send data every hour.
FIGURE 2: DATA IN RJ-11 DETAIL
Data is connected via the two center pins of the
“DATA IN” RJ-11 connector. Electrical shorting of
any RJ-11 pins or terminations may result in unit
failure.
The 24V and GND connections are provided as a
power source for the V-DCPI Digital Protocol
Interface.
Initialization Self Test
Plug the V-C6124P into the AC receptacle. After
approximately two seconds, the three RED LEDs on the
V-CCU should blink twice and then extinguish when the
unit begins to receive data from the master clock. This
indicates that the unit is energized and operating
properly.
NOTE: During the power up self-test, it is normal
for the LEDs to blink out of sequence.
After the initialization self test, the three GREEN LEDs
should illuminate, indicating that 24V is being supplied to
the clocks. The GREEN LEDs will flicker periodically
following data transmission to the clocks.
OPERATION
The V-CCU provides 24VDC power and correction data
over a single pair of wires to Valcom clocks. The unit can
be programmed to send the correction data out once
every second, every minute, every ten minutes or every
hour. RED LEDs indicate that the unit is not receiving
input data. GREEN LEDs indicate that 24VDC is being
supplied to the clocks. The GREEN LEDs will flicker
when correction data is supplied to its respective output.
Master/Slave Mode
Systems requiring multiple V-CCUs may be wired in a
master/slave configuration with one of the clock outputs
connected to the “Data In” of one or more slaves. Slave
units must be mounted within 500 feet of the master and
must have all of their dipswitches set to the “down”
position (slave mode).
Pin 1 24V out to V-DCPI
Pin 2 GND out to V-DCPI
Pin 3 Data
Pin 4 Data
Pin 5 GND out to DCPI
Pin 6 24V out to V-DCPI