10
D. Wiring and Jumper Settings
E. Support
1. Frequently Asked Questions
JP1
JP2
JP3
JP4
JP5
JP6
ON position
*AC/DC Power Input
(not used)
Earth Ground
(not used)
*AC/DC Power Input
*Note: Power input is not polarity sensitive.
See "Input Voltage" specifications on page 8.
View of CL-D2/4 Digital Clock Circuit Board
Jumper
Position
Will the clock cause interference with any of my other wireless devices?
No, the
CL-D2/4
series wireless clocks work on 915 - 928 MHz frequency-hopping technology. The clock switches frequencies
automatically when the receiver and transceiver is open, thus interference is avoided.
How long does it take for the clock to receive a signal?
Upon power up, the clock will look for the signal for 30 minutes. The CL-D2/4 series wireless clock will look for the signal every
minute thereafter.
Do the CL-D2/4 wireless clocks work together with CL-A12/16 Series analog wireless clocks?
Yes, the CL-D2/4 wireless clocks work integrally with Viking’s CL-A12/16 series wireless analog clocks.
How many ways can I mount the CL-D2/4 Series clock?
The clock can be mounted in either surface or double mount. Please see pages 8 and 9 for more information on mounting
instructions.
Can the CL-D2/4 digital clocks be used as an independent clock?
No, the CL-D2/4 requires a communication input and must be used with a Viking Transmitter/Repeater (model
CL-RFT
).
What will happen if the clock is not receiving a signal?
The colon on the display will flash every second.
How can the clock be powered?
The CL-D2 clock is available in 12-30 volt AC/DC model only. The CL-D4 is available in 16-28V DC / 14-28V AC model only. AC
power adapters are provided with each clock.
Jumper Number
Description
ON (factory default)
OFF
JP1
12/24 hour mode
12 hour mode
24 hour mode
JP2
Brightness
Brightest
Bright
JP3
(not used)
N/A
N/A
JP4
(not used)
N/A
N/A
JP5
(not used)
N/A
N/A
JP6
(not used)
N/A
N/A
