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PRODUCT MANUAL

Designed, Manufactured and Supported in the USA

C O M M U N I C A T I O N   &   S E C U R I T Y   S O L U T I O N S

        VIKING

Features

Applications

Information: 715-386-8861

www.vikingelectronics.com

CL Series

Wireless Analog / Digital

Clocks and Accessories

August 23, 2017

Specifications

Viking’s Wireless Clock System provides reliable, accurately synchronized clocks for your entire facility. Eliminating dedicated clock wiring can save you thousands of dollars on installation
and also allows for easy retrofitting of an existing installation. While most wireless systems are limited to the range of the transmitter, Viking’s system is not. Each clock acts as a Repeater
(transceiver), meaning the secondary clocks both receive and retransmit the signal, maximizing signal transmission distances. The system is comprised of a 

CTG-2A

master clock, a 

CL-

RFT

clock RF transmitter and Analog or Digital wireless slave clocks. Working on Viking’s 915-928MHz frequency hopping technology eliminates interference with other wireless products

and requires no FCC license, eliminating extraneous fees. The received signal remains strong even under the effects of noise, obstructions or long distances which tend to decrease the
signal to noise ratio. Installation is a cinch for our wireless clocks, just insert the batteries or connect power and hang them. That’s it. 

Viking’s 

CL Series

wireless clocks include automatic calibration, as well as diagnostics

that allow the user to view the signal strength, how long since the last time the clock
received a signal, a comprehensive analysis of the clock itself and remaining battery
life. The 12 and 16 inch wireless Analog clocks receive and retransmit an RF clock
sync signal every 4 hours (standard mode) or 12 hours (economy mode) allowing for
a battery life of 5 years or 8 years respectively. The 2.5 and 4 inch digital clocks are
powered by an included power adapter and receive and retransmit an RF clock sync
signal every minute. Viking also offers a complete line of accessories for the Analog or
Digital clocks such as: double mount housings, wire guards and surface mount housings
(for digital clocks only).

CTG-2A

Master Clock/Tone

Generator

(DOD# 464)

CL-RFT

Clock RF

Transmitter/

Repeater

CL-A12

12” Analog Clock

(surface mount

hardware included)

CL-A16

16” Analog Clock 

(surface

mount hardware included)

CL-D2

Digital Clock with 2.5”

Numbers

(surface or

double mount housing

not included)

CL-D4

Digital Clock with 4”

Numbers

(surface or double

mount housing not included)

CL-DMA12/16

Double Mount Housing for

12”/16” Analog Clocks

(clocks not included)

CL-SMD2/4

Surface Mount

Housing for 2.5”/4”

Digital Clocks

(clock not included)

CL-WGA12/16

Wire Guard for

12”/16” Analog Clocks

CL-WGD4

Wire Guard for 2.5” or 4”

Digital Clocks

CL-DMD2/4

Double Mount

Housing for 2.5”/4”

Digital Clocks

(clocks not included)

CTG-2A Master Clock/ Tone Generator:

•  See the complete 

CTG-2A

Product Manual, 

DOD# 464

CL-RFT Clock RF Data Transmitter/Repeater:

•  Transmits the 

CTG-2A

RS485 clock sync data wirelessly to the CL Series 

wireless clocks

•  Can be configured as a wireless repeater to extend RF transmit range
•  Powerful transmission range: Up to 6500 ft in open space
•  Compact, slim design makes it versatile for mounting
•  Can wirelessly receive and transmit data
•  LEDs for indication of transmission and/or receipt of RS485 signal
•  Powerful 1 watt (30dBm) transmission
•  Works with Viking’s 915 - 928 MHz frequency-hopping technology
•  FCC Part 14 compliance (no license required)

CL-D2 and CL-D4 Digital Clocks:

•  Built-in repeater receives and retransmits clock sync signal each minute 

up to 500 ft in open space

•  915 – 928 MHz frequency-hopping technology
•  Internal antenna
•  Built-in diagnostic mode for easy maintenance
•  Receives the RF Sync signal once a minute
•  Immediate correction for time change
•  12 or 24 hour format
•  Two (2) levels of adjustable brightness
•  Loss of communication alert
•  Available in red 2.5″ and 4″ displays
•  Surface and double mount housing sold separately
•  Optional wire guards (see 

CL-WGD4

on page 11)

For complete specifications, see pages 3 - 11.

Using the CTG-2A, CL-RFT and CL Series Clocks:

•  Wirelessly synchronize all clocks in your facility to the Atomic clock
•  Signal the beginning and end of class periods, breaks and lunch periods 

for schools

•  Signal the beginning and end of shifts, breaks and lunch periods for 

factories/businesses

•  Provide trigger controlled emergency alert messages for fire, flood, severe 

weather, lock down, etc.

•  Provide messages at specific times for store sales, promotions, closing 

times, airport loading zones, etc.

• Provide Auxiliary contact activation at specific times for specific durations  

for controlling lights, cameras, unlocking doors/gates, etc.

CL-A12 and CL-16 Analog Clocks:

•  Built-in repeater receives and retransmits clock sync signal up to 500 ft in 

open space

•  915 – 928 MHz frequency-hopping technology
•  Internal antenna
•  Built-in diagnostic mode for easy maintenance
•  5 yr battery life (standard mode) or 8 yr battery life (economy mode), 

(2) “D” cell batteries not included

•  Black ABS case and polycarbonate crystal
•  Optional double mount housing available (see 

CL-DMA12/16

on page 5)

Summary of Contents for CL-A12

Page 1: ...mbers surface or double mount housing not included CL DMA12 16 Double Mount Housing for 12 16 Analog Clocks clocks not included CL SMD2 4 Surface Mount Housing for 2 5 4 Digital Clocks clock not included CL WGA12 16 Wire Guard for 12 16 Analog Clocks CL WGD4 Wire Guard for 2 5 or 4 Digital Clocks CL DMD2 4 Double Mount Housing for 2 5 4 Digital Clocks clocks not included CTG 2A Master Clock Tone G...

Page 2: ...wn not included see DOD 489 Adjust master volume to match paging level from phone system and or 1 8 mono plug and or CL A16 CL A12 CL D2 CL D4 25AE 30AE RS485 Input A B Viking RF Synchronized Clocks with Built In Repeaters Paging Horns and or Ceiling Speakers 13 8V AC Adapter included 120V AC 12V DC Adapter included Yellow Orange Yellow Orange 120V AC Note Clock is not polarity sensitive Note Cloc...

Page 3: ...the repeater will read the data from RS485 ports 9 and 10 It will then transmit time data as both a wireless signal and as a RS485 data through ports 7 and 8 The repeater will ignore incoming wireless time data in this mode JUMPERS IN REPEATER POSITION When the jumpers are on the lower pair of pins the repeater will read time data from wireless signal sent by Viking RF transmitters or wireless Clo...

Page 4: ... 2 Duracell Procell D Batteries not included Note Standard alkaline batteries can be used but will have a slightly shorter battery life Input Sensitivity 103 dbm Transmitter Repeater Power Output 1 4 watt 8 dbm Transmits up to 500 ft in open space Operating Sensitivity 915 928 MHz frequency hopping technology Color Standard black Dial Durable polystyrene material Case Smooth surface ABS case Cryst...

Page 5: ...rm this task for both clocks 5 Plug and secure wiring to clock Loosen and slip excess wiring through provided wire clamp comes attached to each clock adaptor and tighten the clamp After securing excess wiring plug the jack at the end of the wiring into the appropriate jack on the back of the clock 6 Attach and screw clocks to adaptors Find all four 4 tabs located on each adaptor Snap the clock ont...

Page 6: ... and the clock is not moving The clock should move at normal speed upon power up If it does not move at normal speed check the battery and make sure the clock receives power Also be sure to remove the pin prior to starting up the clock What happens if the clock does not receive the signal Take the clock within close proximity to the CL RFT Transmitter and power up the clock If the clock is battery...

Page 7: ...ostic will test the battery level of the clock To enter Diagnostic 4 mode push the Diagnostic Switch four 4 times which is indicated by the LED flashing four times every two seconds The second hand will display the battery level by stopping at one of the numbers on the clock s face For example If the second hand lands on 7 the battery level is 2 7V If the second hand lands on 8 the battery level i...

Page 8: ...CL D2 CL D4 Digital Clocks 1 Mount Housing to Wall and or Gang Box To mount the housing to the wall drive two 2 plastic anchors into the wall not supplied in kit and take two pan head screws also not supplied in kit and drive them into the plastic inserts leaving an 1 8th inch gap between the head of the screw and the wall Mount the housing to the wall by lining up the two holes in the back of the...

Page 9: ...e into the hole in the middle of each clock housing Align each housing one at a time with the four holes on the mounting pole and screw from the inside of the housing into the pole using the four 4 8 32 x 7 16 screws supplied in the assembly kit 4 screws per clock Note End caps from one side of each clock must be removed to mount both clocks to the mounting pole Remove one end cap from each clock ...

Page 10: ...ks 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 independen...

Page 11: ... use with the Viking CL A12 12 round analog clock Dimensions 18 75 x 16 x 5 47 63cm x 40 64cm x 12 7cm Shipping Weight 3 9 lbs 1 77 kg Wire 3 6 and 9 gauge Finish Zinc plated epoxy lacquered baked clear coat Description Optional wire guard for use with the Viking CL A16 16 round analog clock Dimensions 23 x 19 x 5 58 42cm x 48 26cm x 12 7cm Shipping Weight 5 2 lbs 2 36 kg Wire 3 6 and 9 gauge Fini...

Page 12: ...er normal use and service for a period of two years from the date of purchase from any authorized Viking distributor If at any time during the warranty period the product is deemed defective or malfunctions return the product to Viking Electronics Inc 1531 Industrial Street Hudson WI 54016 Customer must contact Viking s Technical Support Department at 715 386 8666 to obtain a Return Authorization ...

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