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
Spare pairs in multi conductor talkback speaker
cables, as are often used for classrooms, may be
used to distribute Valcom 2-wire digital clock
correction signals. Do Not use spare pairs in multi
conductor one-way speaker cables to distribute
clock correction signals
– use dedicated clock
cabling for one-way speaker areas.
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
