Radio Systems CT-2002 Series User manual

Radio Systems, Inc.
CT-2002 Clock/Timer Manual
For Models:
CT-DESK
CT-THIN
CT-2INCH
CT-4INCH
CT-CONSOLE
CT-DESKGPS
CT-2INCHGPS
CT-SYNC Clock to PC Synchronization Kit
GPS-SYNC GPS to PC Synchronization Kit

Radio Systems, Inc. CT-2002 Manual
TOC
Table of Contents
General Description
Models .....................................................................................................4
Options ....................................................................................................4
General Operating Instructions
Clock/Timer (Mode) Select ....................................................................... 5
To Set the Clock .......................................................................................5
To Use the Up Timer ................................................................................ 5
To Utilize as Slave Clock Display.............................................................6
To Utilize as Slave Timer Display.............................................................7
Time-of-Day Offset ...................................................................................8
Infrared Remote Control
Up Timing ................................................................................................9
Down Timing ...........................................................................................9
Storing Down Times .................................................................................9
Recalling Stored Down Times ................................................................10
On Power Up .........................................................................................10
Time-of-Day Set ..................................................................................... 10
Setting to Slave Display ..........................................................................10
Setup Functions ......................................................................................11
Infrared Remote Control Diagram...........................................................13
GPS Driver
Additional Operating Instructions ...........................................................14
Setup Programming ................................................................................14
Top-of-Hour Closure .............................................................................. 14
Connections and Installation .................................................................. 14
Operation ...............................................................................................15
GPS Error Codes ..................................................................................... 15
GPS Antenna RJ-45 Connector Wiring ................................................... 15
PC Synchronization and GPS Antenna Cable Extension
GPS-SYNC Synchronization Kit ..............................................................16
CT-SYNC Synchronization Kit ............................................................... 16
CT-150CABLE -150ft. Extension Cable ................................................... 17
CT-250CABLE -250ft. Active Extension Cable ........................................ 17
Wiring and Programming Diagrams
Master Synchronization via “Lead Clock,” ToH, or PC
Using Twisted Pair ................................................................................18
Master Synchronization via “Lead Clock,” ToH, or PC
Using RJ-45 Patch Wire .........................................................................19
Master Synchronization via GPS Using Twisted Pair ..............................20
Master Synchronization via GPS Using RJ-45 Patch Wire....................... 21
Remote Control Connections ..................................................................22
CT-2002 GPS Antenna Wiring Options .................................................23
CT-2002 GPS DIP Switch Settings Diagram............................................24
Policies
Warranty ................................................................................................25
Repair Policy .......................................................................................... 25
Return Instructions .................................................................................25

Radio Systems, Inc. CT-2002 Manual
Page 4
Radio Systems, Inc. CT-2002 Manual
Page 4
General Description
The CT-2002 series of digital clock/timers is a family of timing displays, a master
driver and a GPS driver.
Models
All Display Models: Will accept serial Time-of-Day and timer data in
Radio Systems format, or Time-of-Day (only) data in
SMPTE format. Provides up-timing as standard and
down-timing with the optional IR remote control.
Each display model (with V2005 or higher software)
will output serial data for Time-of-Day in Radio
Systems format.
CT-DESK 7” wide x 2.5” high x 4.5” deep Desktop clock/up-
down timer with 5/8” LED displays which functions
as a stand alone or slave time of day display with
wired remote control.
CT-THIN 7” wide x 2.5” high x 1.25” deep “stick-on” clock/
timer with 5/8” LED displays featuring the same
functions as the desktop unit, but in a smaller profile
cabinet.
CT-2INCH 15.25” wide x 5.25” high x 3” deep clock/timer dis-
play with 2” high LED display and the same features
set as the
“desktop” and “thin” units.
CT-4INCH 24.5” wide x 7” high x 3” deep clock/timer display
with 4” high LED display and the same features set
as the “desktop” and “thin” units.
GPS Models: Provide up-timing and output serial Time-of-Day data
in Radio Systems format.
Options
Infra-Red Remote Control Required for down timing and internal setup func-
tions. Also provides clock operation, Time-of-Day
Set and up-timer functions (for display units only.)
Included with Desktop & Large Display.
RS-485 Converter Installs in-line between the GPS satellite antenna and
clock/receiver. Required for cable runs in excess of 150’.

Radio Systems, Inc. CT-2002 Manual
Page 5
General Operating Instructions
For all non GPS or master units (applies to units utilized in stand-alone
and slave display capacities.)
Time-of-Day Set Up and Up-Timer functions can be controlled by the front panel
buttons or the wired remote control. However, the IR Remote Control must be
used for entering down times and internal setup functions.
Front Panel or Wired Remote Operation
Clock/Timer (Mode) Select
All CT-2002 units operate as both clocks and timers. Switch between modes by
pressing the MODE button on the front of the unit. The front panel LED’s will light
to indicate the mode selected.
Note that on the CT-2002 large wall display models, the mode switch is available
on the remote control only. The fourth front panel switch is used to put the clock
into the set mode.
To Set the Clock:
Note: If Serial Time of Day is supplied to the CT-2002 (slave mode), it will not
be possible to enter the Time-of-Day set mode. Setting the time-of-day can either
be done at the master unit or the displayed hours can be offset via the IR Remote
Control.
1. Press the mode button to select the Time-of-Day display. The Clock LED will
illuminate.
2. (Desktop and Thin models) - press and hold the STOP and START buttons.
The Set LED will illuminate.
(Large models) - press the SET button. The Set LED will illuminate.
3. Display resets to 12:00:00
4. Press the STOP button to advance the hours. Press the RESET button to
advance the minutes (note - seconds are not setable and remain at :00).
5. Start the clock at the top of the minute by pressing the START button.
The Set LED will extinguish.
To Use the Up Timer:
(To utilize as a Down-TImer consult IR Remote Control Instructions page 8)
1. Press the Mode Button to select the timer display. The Timer LED will
illuminate.
2. Press the START button to start timing.
3. Press the STOP button to stop timing.
4. Press the RESET button to return the display to 00:00.

Radio Systems, Inc. CT-2002 Manual
Page 6
Slaved Displays
To Utilize as a Slaved Clock Display (CT-2002 Display units only):
1. Consult page 10 for setup functions to select either RS or SMPTE sync format.
2. Provide serial data to the unit. Choices of serial data are SMPTE time code
and Radio Systems Time-of-Day data from CT-2002 GPS. In addition a
CT-2002 display unit can be used to provide Time-of-Day and Timer data
in the Radio Systems format. To connect to slave Time-of-Day displays only,
wire only the serial data input terminals in parallel (use either the terminal
strip or RJ-45 connectors —see the connections diagram on page 20 & 22).
3. The “SYNC” front panel LED will light and the time-of-day will immediately
synchronize to the master unit readout.
4. Time-of-Day setting is now no longer available on this slave display. Time-of-
Day setting must be made to the unit providing the serial Time-of-Day data.
5. If the data link is lost, the clock will revert to stand-alone local operation and
the sync LED will extinguish.
6. Local timer functions continue to be available as described on the preceding
page.
7. The minutes and seconds may be offset from the top of hour input closure.
See manual section “Time-of-Day Offset on page 8 and “IR Remote control”
section.
8. The hour, minutes and seconds may be offset from the upstream time-of-day
serial data via the infra-red remote control. See manual section “Time-of-Day
Offset on page 8 and “IR Remote control” section.
Note: software/hardware kit is available (Radio Systems part # CT-SYNC) to
update Windows PC clocks from your CT-2002 serial data stream

Radio Systems, Inc. CT-2002 Manual
Page 7
Radio Systems, Inc. CT-2002 Manual
Page 7
To Utilize as a Slaved Timer Display as well as a slaved clock dis-
play. (CT-2002 Display units only):
1. Consult page 11 for Setup function programming, and choose selection
3 option “RS2” for slave timer operation.
2. Provide serial data from any CT-2002 display unit whose timer display you
want to slave. Connect the serial data output terminals of the up-stream
CT-2002 display to the serial data input terminals of the slave display. Use
either terminal strip or RJ-45 connectivity (consult wiring diagram on page 20
& 21.)
3. Place the slave display in the clock mode and confirm that the “SYNC” front
panel LED on the slave display is lit and that the slave displays shows the
Time-of-Day from the up-stream unit.
4. In the “Clock” mode, the time-of-day on the slave display will now synchro-
nize to the up-stream stand alone display (regardless of what mode is being
displayed on the stand-alone upstream display.)
5. Place the slave display in the timer mode and press the “MEM 6” button on
the IR remote control. Confirm that the SYNC LED on the slave lights and
that the slave display shows the timer data from the up-stream display unit.
6. To return the slave display to none-slaving timer (stand-alone) functionality,
press the “RESET” button on the IR remote control with the slave display in
the timer mode. The “SYNC” LED will extinguish and the timer display will
reset to 00:00, allowing local (IR and parallel) timer control.
7. To return to slave timer operation, push the “MEM 6” button on the IR
remote control with the slave display in the timer mode. The “SYNC” LED
will (re)illuminate and the display will synchronize to the up-stream stand-
alone timer display.
8. Additional timers “downstream” from this slave timer may be wired to slave
to this timers display, or function as Time-of-Day displays and independent
stand-alone timer displays. Consult the wiring diagram on page 20 (RJ-45
patch cord wiring) or 21 (twisted pair wiring) for specific wiring configura-
tions.
Wired Remote Control
All front panel controls are available on the rear barrier strip connector.
Contacts are momentary / pull-to-ground.
See attached wiring diagram for connections - page 18.

Radio Systems, Inc. CT-2002 Manual
Page 8
Time of Day Display Offset
The time of day displayed on CT2002 displays slaved from upstream GPS or
Master clocks or triggered by top-of-hour input closures can be offset by any
amount of seconds, minutes, or hours. Typical applications ofr such an offset:
•Network Top-of-hour pulses sent early (seconds before the
actual top-of-hour)
• Stations running in full obsentity delay
• HD station transmission delay
• Time zone multi clock displays
To offset closure reset:
Use the infrared remote control option 10 position to enter the minutes and
or seconds desired to be displayed when the top of hour closure is received.
• Note that hours displayed will not be affected.
• Note that top-of-hour is only active prior to and after the hour (to avoid
false triggers at other times).
• See manual page 12 for programming instructions.
To offset serial time input from and upstream GPS or Master
clock in the serial chain (RS serial time code or SMTPE time code
allowed):
Use the infra red remote control to input hours to be added to time of day
serial data (option 4), or minutes and or seconds to be added to the time of
day serial data (option 11).
• Note that offsets are always added to the stream. For example:
To offset plus 1 hour, 10 seconds - set option 4 for 01 and
option 11 for 00:10
To offset minus 8 seconds - set option 4 for 23 and
option 11 for 00:52

Radio Systems, Inc. CT-2002 Manual
Page 9
Infra Red Remote Control
(Not Available on GPS MASTERS)
Up Timing
1 Press the Timer Button to place the CT-2002 into the Timer Mode. The Timer
LED will illuminate.
(If the “Down” LED is illuminated, press the Reset Button. It may require two
presses.)
2. Press the Start Button to start up timing.
3. Press the Stop Button to stop up timing.
4. Press the Start Button to resume up timing.
5. Press the Reset Button to clear the display.
Down Timing
1. Press the Timer Button. The Timer LED will illuminate.
2. Using the numeric keypad, enter a down time. The Set LED and Down LED
will illuminate. Hours can be from 00 to 99, minutes from 00 to 59 and sec-
onds from 00 to 59. Erroneous entries can be overwritten or the Reset Button
can be used to zero the display. An invalid time such as 12:60:00 will be
cleared when the Start Button is pressed.
3. Press the Start Button to begin down timing. (The down timer can be set
to either stop at zero or continue to count negative. See IR Remote Setup
Functions - see page 10.)
4. Press the Stop Button to stop down timing.
5. Press the Start Button to resume down timing.
6. Press the Reset Button once to recall the entered down time. Repeat steps 3
through 6 as desired.
7. Press the Reset Button two times to exit the down mode (and to clear the
display and return to up timing mode).
Storing Down Times
The IR Remote Control can be used to store up to six down times. These times are
saved when power is removed from the CT-2002.
1. Press the Timer Button. The Timer LED will illuminate.
2. Using the numeric keypad, enter a down time. The Set LED and Down LED
will illuminate. Hours may be from 00 to 99, minutes from 00 to 59, and sec-
onds from 00 to 59. Erroneous entries can be overwritten or the Reset button
can be used to zero the display.
3. Press one of the Store Buttons. If the time entered was valid, the display will
momentarily flash, the Set LED will extinguish and the down time will be
stored. In addition, the entered down time will remain on the display and
the Down LED will remain illuminated. However, an invalid time (such as
12:60:00) will be cleared when a Store Button is pressed. In addition, the
CT-2002 will return to the Up Timer Mode.
4. Repeat steps 2 and 3 as desired.

Radio Systems, Inc. CT-2002 Manual
Page 10
Recalling Stored Down Times
Previously stored down times in locations MEM1 thru MEM6 may be recalled
either with the IR remote control or via the wired remote control. See connection
diagram page 18.
1. Press the Timer Button. The Timer LED will illuminate.
2. Press one of the Store Buttons.
3. The stored down time will appear on the display. The Down LED will illuminate.
4. Press the Start Button to begin down timing.
5. Press the Stop Button to stop down timing.
6. Press the Start Button to resume down timing.
7. Press the Reset Button once to recall the selected down time. Repeat steps 3
through 6 as desired.
8. Press the Reset Button two times to exit the down mode (return to up timing
mode) and clear the display.
On Power up
1. Units always power up into the time-of-day mode.
2. If serial data (RS or SMPTE) is supplied (and the correct mode was pre-select-
ed with the IR Remote Control), then the serially supplied time will display.
3. The clock must be set when using the internal clock base.
Time-of-Day set
The CT-2002 will not enter the Time-of-Day set mode if serial time of day is being
supplied by a master clock or GPS system. However, the displayed time may be
offset up to 23 hours, (see IR Remote Setup Functions - page 13).
1. Press the Clock Mode Button to put the CT-2002 into the Clock Mode.
The Clock LED will illuminate.
2. Press the Time-of-Day set button. The Set LED will illuminate.
3. Using the numeric keypad on the IR Remote Control enter the correct time.
The display will advance to the next digit only if a valid time has been
entered. In the event of an erroneous entry, press the Time-of-Day set button
to start over.
4. Press start at the correct moment.
Setting the Timer to Act as a Slave Display
Timers can be wired to slave the display of an upstream timer. Consult wiring dia-
gram on pages 20 & 21for details.
1. When in timer mode, press the MEM 6 button on the IR remote control. The
“SYNC” LED will illuminate and the timer will display the upstream time
(the slave display must be receiving timer data from and up-stream timer, and
RS2 must be selected in IR setup option three.)
2. Press the Reset Button “when in timer mode” to force the timer to operate as
a local up/down timer. The “SYNC” LED will extinguish and the timer dis-
play will reset to 00:00. Operate the timer as usual.
3. Press the “MEM 6” button on the IR Remote Control to revert to slave timer
readout.

Radio Systems, Inc. CT-2002 Manual
Page 11
Setup Functions
The IR Remote Control is used to set various functions of the CT-2002. With the
exception of “IR Remote Disable” these selections are stored if power is lost.
1. Press the Program Button. The “PGM” LED will illuminate. Repeatedly press-
ing the Setup Button will step the CT-2002 through the 10 menu choices.
2. The selections are changed either by pressing the “CLOCK SET” button or
using the numeric keypad.
3. The Setup Mode is exited (and the selections are stored) by pressing either
the Clock Button or the Timer Button.
4. For a confidence check that your programming changes have been made and
stored, cycle thru the setup functions without making any more changes to
check that your entries are saved. Then press clock or timer to exist.
Option 1: 12/24 hour clock operation. Press the “CLOCK SET”
button to toggle between 12 and 24 hour operation.
Option 2: Down timer stop at zero or count negative. Press the
Time-of-Day set button to toggle between hold at 0 or go
negative.
Option 3: Serial time of day format. Press the “CLOCK SET” button to
toggle between Radio Systems-1 (rS1) format, Radio Systems-2
(rS2) format and SMPTE (SP) format .
“SMPTE” enable the serial input to read standard SMPTE
format (no drop frame ).
“rS1” enables the serial inputs to read Radio Systems serial
time of day format as generated by Radio Systems’ GPS,
Master, and stand-alone clocks.
“rS2” enables the serial inputs to read Radio Systems serial
time of day format as well as upstream timer displays. Note
that in this mode, the “Mem 6” and RESET keys on the IR
Remote control is retasked to allow switching between slave
and local timer functions.
Option 4: Serial time of day hour offset. Press the “CLOCK SET” button
to select from 00 to 23 hour added to the serial time of day
data. Use option 11 to input minutes and seconds added.
Option 5: IR Remote Functionality. Press the “CLOCK SET” button
to toggle between full functionality (iron), program defeat
(irPr), and no remote (irno).
In program defeat (irPr) the setup functions are locked out.
When AC power is toggled off and on, the remote returns to
full functionality.
In no remote (irno) all remote functions are ignored. When
AC power is toggled off and on, the remote returns to full
functionality. Use this function if there is more than one
clock in use in the same room.

Radio Systems, Inc. CT-2002 Manual
Page 12
Option 6: Time compare 1. Use the numeric keypad to enter the
minutes and seconds of the time compare. Time between
00:00 and 59:59 must be entered. Note that all four dig-
its (including leading zeros) must be entered. When the
minutes and seconds of the time of day are equal to the
time compare stored, the matching open collector wired
remote will activate.
Option 7: Time compare 2. See “option 6” above.
Option 8: Time compare 3. See “option 6” above.
Option 9: Time compare 4. See “option 6” above.
Option 10: Top of Hour Reset Offset. A wired remote input is
available for top of hour reset. The default operation
is to reset the time-of-day to 00 min’s. & 00 sec’s.
Use the numeric keypad to reset to a different time,
(minutes and seconds). When the displayed time of day is
within a +
- 5 minute window of the stored top of hour time
and the wired remote input is activated, the displayed
time will be replaced by the stored top of hour time. (This
function active for stand-alone time-of-day operation
only.)
Option 11: Serial time of day minutes and seconds offset. Use the
numeric keypad to enter the minutes and seconds desired to
be added to the serial time of day data. Use option 4 to input
hours to be added.

Radio Systems, Inc. CT-2002 Manual
Page 13
RESETSTOP START
CLOCK TIMER
CLOCK SET PROGRAM
123
456
7 8 9
0
MEM 1 MEM 2 MEM 3
MEM 4 MEM 5 MEM 6
Storing Down Times
1. Press the Timer Button.
The Timer LED will illuminate.
2. Using the numeric keypad, enter a down
time. The Set LED and Down LED will illumi-
nate. Hours may be from 00 to 99, minutes
from 00 to 59, and seconds from 00 to 59.
Erroneous entries can be overwritten or the
Reset button can be used to zero the display.
3. Press one of the Store Buttons. If the time
entered was valid, the display will momen-
tarily flash, the Set LED will extinguish and
the down time will be stored. In addition, the
entered down time will remain on the display
and the Down LED will remain illuminated.
However, an invalid time (such as 12:60:00)
will be cleared when a Store Button is
pressed. In addition, the CT-2002 will return
to the Up Timer Mode.
4. Repeat steps 2 and 3 as desired.
Recalling Stored Down Times
1. Press the Timer Button.
The Timer LED will illuminate.
2. Press one of the Store Buttons.
3. The stored down time will appear on the
display. The Down LED will illuminate.
4. Press the Start Button to begin down timing.
5. Press the Stop Button to stop down timing.
6. Press the Start Button to resume down timing.
7. Press the Reset Button once to recall the
selected down time. Repeat steps 3 through 6
as desired.
8. Press the Reset Button two times to exit the
down mode (return to up timing mode) and
clear the display
Note: Stored Down-Time 1 can be recalled
remotely via parallel remote control wiring.
See illustration page 18.
Push to display
Time-of-Day
Push to freeze
Timer Display
When Up-Timing:
Push once to reset timing to 00:00
(Continues to run if reset from Stop)
(Holds if reset from Stop)
When Down-Timing:
Push once to redisplay down time.
Push again to return display to 00:00
and Up-Time mode.
In Clock Mode:
Starts display running from
Time-of-Day set mode
In Timer Mode:
Starts display running from
Up or Down Timer display
Push for Timer Mode
Push to set Time-of-Day
Enter via numeric keypad.
Push start.
Push to set Internal Programming fea-
tures (see setup functions on page 10).
Program functions via
numeric keypad.
Push Timer or Clock to exit
in that mode
To set down time
Enter time via numeric keypad.
Push start to begin.
Push reset to recall downtime.
Push reset 2x to exit.
CT-2002 InfraRed Remote Control
MEM 6 is retasked to switch the
timer between slave and local
modes when using associated dis-
play as a remote timer. See page 7.

Radio Systems, Inc. CT-2002 Manual
Page 14
GPS Driver
Additional Operating Instructions
Setup Programming
Refer to the dip-switch setting diagram on page 23 to program the hour offset from
GMT for your time zone, to enable the automatic daylight savings time setting,
and to enable 12 or 24 hour operation.
Note that the unit is shipped with the factory default setting of Eastern Time Zone (5
hours behind GMT), auto daylight savings time switch-over and 12-hour operation.
The analog clock dip-switch (switch #1) causes the display to flash after recovery
from a satellite signal loss as an operator indication that your analog clocks have
lost time and must be reset. (Digital clocks connected to the GPS Master driver
will automatically update.) After adjusting the time on the analog clock (see ana-
log clock operation), push the start button to cease flashing and resume normal
display. Factory default for this feature is “off”.
Top-of-Hour Closure
GPS Master driver units (on 2” and desktop) provide a top-of-hour closure avail-
able as a C-form relay closure for 250 ms, occurring at the top of each hour. The
C-form contacts are available on the rear remote control barrier strip
connector on pins 15 and 16 (last two terminals on the strip). See Remote
Connection diagram page19 of this manual for connections.
Connections and Installation
1. Mount the antenna on a roof or window ledge with a clear view of the sky.
Avoid areas directly under microwave antenna paths, or near dense foliage.
2. The antenna plugs into the clock/receiver via a pre-installed RJ-45 Ethernet
style connector. Up to 150’ of four conductor shielded cable may installed
between the antenna and the receiver. This cable may be user provided, or a
pre-assembled 150’ or 250’ extension cable is available from Radio Systems.
Please note that for any cable run in excess of 150’, in-line balancing RS-485
convertor amplifiers, available from Radio Systems, must be installed. For
wiring specifications, see the attached antenna wiring detail on page 23.

Garmin GPS 17HVS Antenna
RJ-45 Connections
Note: Remote ON/OFF lead (Wht/Grn) must be connected to Ground Lead (Wht/Org)
in the boot of the RJ-45 connector to activate antenna
White/Orange
GROUND
Orange/White
POWER (8V to 40VDC)
White/Green
Remote ON/OFF
White/Blue Data IN #1
Green/White
Data OUT #1
White/Brown Data IN #2
Brown/White Data OUT #2
Blue/White
1PPS
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Radio Systems, Inc. CT-2002 Manual
Page 15
Operation
1. After all connections are made, apply power. The unit will take from 1 to 15
minutes to acquire the satellite data. During this initial acquisition period,
and during any subsequent periods of satellite data loss, the GPS Master unit
will display one of 5 error codes. These codes and their meanings are listed
below.
2. After acquisition, the true time will display and will be serially relayed to any
digital display units “downstream”. If data is lost at any time in the future,
downstream display “data” lamps will extinguish, but these clocks will con-
tinue to run on their internal time base. On satellite reacquisition, the time
will be updated, and the “data” lamps re-illuminated.
3. Front panel master GPS controls cannot be used to set or change the digitally
displayed time-of-day, but the time mode may be used to adjust the time on
any analog clocks connected, and the START, STOP and RESET switches may
be used in the timer mode. See the “Analog Clock Connection and Use” sec-
tion for operating details.
GPS Error Codes
These two digit error codes will display in the GPS Master readout in the center
two digits on unit turn-on (pre-satellite acquisition) and during any data outage.
Error Code 1-Pulse Per Second Serial Data Data
01 (1 PPS line broken) not present present okay
02 (satellite acquisition lost) present present bad
03 (fire-up status - first 1 to 15 minutes) not present present bad
04 (corrupted serial data output) present not present bad
05 (no antenna connection) not present not present bad
GPS Antenna RJ-45 Connector Wiring Instructions

PC Synchronization
GPS-SYNC Synchronization Kit
This hardware and software kit allows time code received directly from the GPS
antenna to be read into a PC COMM (RS232 serial) port.
The kit includes an antenna, antenna outdoor mount, 12ft. connectorized serial
cable, power supply and interface box, and software. A 150ft. extension cable is
available as well as an RS-485 extender for extended cable runs up to 500ft.
Included software installs in any Windows 2000 or higher OS and automatically
updates the Windows time base with GPS accurate time. Hours, minutes and sec-
onds offset can be set manually via software configuration screens.
CT-SYNC Synchronization Kit
This hardware and software kit allows a PC’s time base to be updated via RS serial
time code, OR allows a PC’s time base to output RS serial time code. Connection
to the PC is via USB and connection to CT-2002 is a two wire twisted pair serial
cable. The kit includes a USB to RS485 converter and software.
One included software program installs in any Windows 2000 or higher OS and
automatically updates the Windows time base with CT-2002 serial time. The sec-
ond software program also included installs in any Windows 2000 or higher OS
and automatically updates the CT-2002 clock system from the PC time base.
Hours, minutes and seconds offset can be set manually via the software
configuration screens or in the CT-2002 software.
Radio Systems, Inc. CT-2002 Manual
Page 16
This software/hardware
kit (Radio Systems part #
CT-SYNC) is available to
update Windows PC clocks
via USB from the CT-2002
serial data stream OR convert
the Windows time base to
RS time code to drive and
synchronize the CT-2002
system.
PC Clock Input Sync

Radio Systems, Inc. CT-2002 Manual
Page 17
GPS Antenna Cable Extension
CT-150CABLE - 150ft. Extension Cable
150ft. of shielded CAT-5 cable with “biscuit” style RJ-45 termination boxes at
each end. GPS antenna plugs into far side and near is connected to GPS clock via
an RJ-45 patch cable (provided.)
Note: This cable may be shortened by the customer, but 150ft. is the maximum
distance that the antenna cable may be extended without the use of the active
RS-485 converter boxes (below.)
CT-250CABLE - 250ft. Active Extension Kit
250ft. of shielded CAT-5 cable with active RS-232 to RS-485 extender ‘biscuits”.
GPS antenna plugs into far side and near is connected to GPS clock via an RJ-45
patch cable (provided.) Converter biscuits are active and powered via the GPS
clock power supply.
Note: The antenna side RS-232 converter is not in a water-proof box and must be
housed indoors or in a protective closure.

Radio Systems, Inc. CT-2002 Manual
Page 18
Master Synchronization via “Lead Clock,” Top-of-hour or PC Sync.
using twisted pair (CAT-5) wiring
GND
SERIAL OUT -
SERIAL OUT +
GND
START SWITCH
STOP SWITCH
RESET SWITCH
MODE SWITCH
GND
TIME CLOSURE 1
TIME CLOSURE 2
TIME CLOSURE 3
TIME CLOSURE 4
GND
DOWN TIME CLOSURE AT “0”
TOH RESET INPUT
RJ-45 OUT
RJ-45 IN
9V DC IN
MODEL CT -2002 DESKTOP P art No. 14409
SERIAL IN +
SERIAL IN -
RJ-45 SHIELD TO GND
Logan T ownship, New Jersey USA
1-856-467-8000 • www .radiosystems.com
CT-DESK “LEAD CLOCK”
CT-SYNC
PC KIT
GND
SERIAL OUT -
SERIAL OUT +
GND
START SWITCH
STOP SWITCH
RESET SWITCH
MODE SWITCH
GND
TIME CLOSURE 1
TIME CLOSURE 2
TIME CLOSURE 3
TIME CLOSURE 4
GND
DOWN TIME CLOSURE AT “0”
TOH RESET INPUT
RJ-45 OUT
RJ-45 IN
9V DC IN
MODEL CT -2002 DESKTOP P art No. 14409
SERIAL IN +
SERIAL IN -
RJ-45 SHIELD TO GND
Logan T ownship, New Jersey USA
1-856-467-8000 • www .radiosystems.com
SERIAL INPUT
TERMINATION
RJ-45 OUT
RJ-45 IN
RJ-45 SHIELD TO GND
12345 678910 1112131415 1617181920
Ancillary I/O
16- Ground
17- Down Time Closure a t “0”
18- Top-of-Hour Input
19- Ground
20- +15V DC
Remote Control
6- Ground
7- Start
8- Stop
9- Reset
10- Mode
Clock Triggers
11- Ground
12- Time Closure #1
13- Time Closure #2
14- Time Closure #3
15- Time Closure #4
Serial Synchronizing Data
1- Serial In +
2- Serial In -
3- Ground
4- Serial Out -
5- Serial Out +
REMOTE CONTROL BARRIER STRIP PIN-OUTS
9
4
8 7 6
3 2 15
DB9 (FEMALE) PINOUTS
Pin 1- Serial Data Out +
Pin 2- Serial Data In +
Pin 3- Serial Data In -
Pin 4- Serial Data Out -
Pin 5- GND
Pin 6- TOH Reset
Pin 7- GND
Pin 8- N/C
Pin 9 N/C
Repeat up to 32 total displays.
Note: final display serial line must be terminated with a
150Ω resisitor (use terminator DIP switch on large clock.)
CT-4INCH &
CT-2INCH DOWN TIME CLOSURE AT “0”
+9V DC IN
GND
GND
START SW
STOP SW
RESET SW
MODE SW
GND
SERIAL IN -
SERIAL IN +
GND
TOP OF HOUR RESET INPUT
TIME CLOSURE 4
TIME CLOSURE 3
TIME CLOSURE 2
TIME CLOSURE 1
GND
J4 J6
SERIAL OUT -
SERIAL OUT +
CT-THIN
CT-CONSOLE
CT-DESK
For Time of Day Only Synchronization
(timers operate independently) - use the remote
control to set the clocks in “RS1” serial time code
mode and wire serial input pins in parallel
(as shown.) Use the serial output pins of the
GPS clock only.
For the first device in the chain
the serial output terminals must be utilized to
drive serial data to downstream clocks.
For Top of Hour Sync
Connect top of hour closure.
Pulse must arrive +/- 5 seconds
from top of hour.
For Time of Day & Downstream Timer
Synchronization - use the remote control
to set the clocks in “RS2” serial time code
mode and wire the serial input to the serial
input pins, and the serial output from the
serial output pins (as shown.) Note that all clocks
downstream from the crossover cable will display
Time of Day from the clock in the chain before the
first crossover cable. Parallel wiring to the serial
input pins can be utilized later down stream if flow
thru of timer data is no longer preferred. Timers
can still be forced to local control by use of the
“MEM6” button on the remote control.
See pg 7 for more details.
J1
OR

Radio Systems, Inc. CT-2002 Manual
Page 19
Master Synchronization via “Lead Clock,” Top-of-hour or PC Sync.
using RJ-45 patch wire
GND
SERIAL OUT -
SERIAL OUT +
GND
START SWITCH
STOP SWITCH
RESET SWITCH
MODE SWITCH
GND
TIME CLOSURE 1
TIME CLOSURE 2
TIME CLOSURE 3
TIME CLOSURE 4
GND
DOWN TIME CLOSURE AT “0”
TOH RESET INPUT
RJ-45 OUT
RJ-45 IN
9V DC IN
MODEL CT -2002 DESKTOP P art No. 14409
SERIAL IN +
SERIAL IN -
RJ-45 SHIELD TO GND
Logan T ownship, New Jersey USA
1-856-467-8000 • www .radiosystems.com
SERIAL INPUT
TERMINATION
RJ-45 OUT
RJ-45 IN
RJ-45 SHIELD TO GND
12345
678910
1112131415
1617181920
Ancillary I/O
16- Ground
17- Down Time Closure a t “0”
18- Top-of-Hour Input
19- Ground
20- +15V DC
Remote Control
6- Ground
7- Start
8- Stop
9- Reset
10- Mode
Clock Triggers
11- Ground
12- Time Closure #1
13- Time Closure #2
14- Time Closure #3
15- Time Closure #4
Serial Synchronizing Data
1- Serial In +
2- Serial In -
3- Ground
4- Serial Out -
5- Serial Out +
REMOTE CONTROL BARRIER STRIP PIN-OUTS
J5
RJ-45 Input
9
4
8 7 6
3 2 15
J6
RJ-45 Output
Repeat up to 32 total displays.
Note: final display serial line must be terminated with a
150Ω resisitor (use terminator DIP switch on large clock.)
CT-4INCH & CT-2INCH
DOWN TIME CLOSURE AT “0”
+9V DC IN
GND
GND
START SW
STOP SW
RESET SW
MODE SW
GND
SERIAL IN -
SERIAL IN +
GND
TOP OF HOUR RESET INPUT
TIME CLOSURE 4
TIME CLOSURE 3
TIME CLOSURE 2
TIME CLOSURE 1
GND
J4 J6
SERIAL OUT -
SERIAL OUT +
CT-THIN
CT-CONSOLE
CT-DESK
For Time of Day Only Synchronization
(timers operate independently) - use
the remote control to set the clocks in
“RS1” serial time code mode and use a
straight thru patch cable.
For Time of Day & Downstream Timer
Synchronization - use the remote control
to set the clocks in “RS2” serial time code
mode and use a crossover patch cable.
Note that all clocks downstream from the
crossover cable will display Time of Day
from the clock in the chain before the
first crossover cable.
A straight thru cable can be installed later
down stream if flow thru of timer data is
no longer preferred.
Timers can still be forced to local control
by use of the “MEM6” button on the
remote control. See pg 7 for more details.
GND
SERIAL OUT -
SERIAL OUT +
GND
START SWITCH
STOP SWITCH
RESET SWITCH
MODE SWITCH
GND
TIME CLOSURE 1
TIME CLOSURE 2
TIME CLOSURE 3
TIME CLOSURE 4
GND
DOWN TIME CLOSURE
AT “0”
TOH RESET INPUT
RJ-45 OUT
RJ-45 IN
9V DC IN
MODEL CT -2002 DESKTOP P art No. 14409
SERIAL IN +
SERIAL IN -
RJ-45 SHIELD TO GND
Logan Township, New J ersey USA
1-856-467-8000 • www .radiosystems.com
CT-DESK “LEAD CLOCK”
CT-SYNC
PC KIT
For the first device in the chain
the serial output terminals must
be utilized to drive serial data to
downstream clocks.
For Top of Hour Sync
Connect top of hour closure.
Pulse must arrive +/- 5 seconds
from top of hour.
OR
DB9 (FEMALE) PINOUTS
Pin 1- Serial Data Out +
Pin 2- Serial Data In +
Pin 3- Serial Data In -
Pin 4- Serial Data Out -
Pin 5- GND
Pin 6- TOH Reset
Pin 7- GND
Pin 8- N/C
Pin 9 N/C
RJ-45 Serial Input
Pin-Outs
1 n/c
2 n/c
3 Serial In +
4 Ground
5 Top-of-Hour Reset
6 Serial In-
7 n/c
8 n/c
RJ-45 Serial Output
Pin-Outs
1 Serial Out +
2 Serial Out -
3 Serial In +
4 Ground
5 Top-of-Hour Reset
6 Serial In-
7 n/c
8 n/c
NOTE: The serial input
terminal are in parallel
between the two
connectors allowing
data to be looped thru
to down stream clocks.
When looping thru only
upstream data will pass
(i.e. no local timer data
from this clock will flow
downstream.)
NOTE: The serial output
terminals should be
used only when
it is desired to pass
data from this clock to
downstream clocks
(i.e. local timer data.)
Straight Thru RJ-45 Wiring
Pins 1 thru 8 all connected.
For all cables in the chain that use straight thru
(standard 568B style) patch cords.
Cross over RJ-45 Wiring
For all cables in the chain that use cross over
(standard 568B style) patch cords.
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
(Do not use a premade crossover cable.
Custom wire with just two wires as shown.)
RJ-45 OUT
Pins 1 & 2
RJ-45 IN
Pins 3 & 6

Radio Systems, Inc. CT-2002 Manual
Page 20
Master Synchronization via GPS
using twisted pair (CAT-5) wiring
GND
SERIAL OUT -
SERIAL OUT +
GND
START SWITCH
STOP SWITCH
RESET SWITCH
MODE SWITCH
GND
TIME CLOSURE 1
TIME CLOSURE 2
TIME CLOSURE 3
TIME CLOSURE 4
GND
DOWN TIME CLOSURE AT “0”
TOH RESET INPUT
RJ-45 OUT
RJ-45 IN
9V DC IN
MODEL CT -2002 DESKTOP P art No. 14409
SERIAL IN +
SERIAL IN -
RJ-45 SHIELD TO GND
Logan T ownship, New J ersey USA
1-856-467-8000 • www .radiosystems.com
12345678
BACK
DIP SWITCHES
(UP IS ON)
SERIAL DA TA OUT +
SERIAL DA TA OUT -
GROUND
START SWITCH
STOP SWITCH
RESET SWITCH
MODE SWITCH
GROUND
AHEAD
DC TO CLOCKS
10 Hz TO CLOCKS
GROUND
N. O. CONTACT
N. O. CONTACT
ANTENNA
15V DC IN
1 Hz OUT
TO
IMPULSE
DRIVER
TO
ANALOG
CLOCKS
TOP
OF HOUR
CLOSURE
MODEL CT -2002 GPS P art No. 14411
SERIAL INPUT
TERMINATION
RJ-45 OUT
RJ-45 IN
RJ-45 SHIELD TO GND
12345 678910 1112131415 1617181920
Ancillary I/O
16- Ground
17- Down Time Closure a t “0”
18- Top-of-Hour Input
19- Ground
20- +15V DC
Remote Control
6- Ground
7- Start
8- Stop
9- Reset
10- Mode
Clock Triggers
11- Ground
12- Time Closure #1
13- Time Closure #2
14- Time Closure #3
15- Time Closure #4
Serial Synchronizing Data
1- Serial In +
2- Serial In -
3- Ground
4- Serial Out -
5- Serial Out +
REMOTE CONTROL BARRIER STRIP PIN-OUTS
Logan T ownship, New J ersey USA
1-856-467-8000 • www .radiosystems.com
See page 23
for Antenna
Connection
Options
9
4
8 7 6
3 2 15
DB9 (FEMALE) PINOUTS
Pin 1- Serial Data Out +
Pin 2- Serial Data In +
Pin 3- Serial Data In -
Pin 4- Serial Data Out -
Pin 5- GND
Pin 6- TOH Reset
Pin 7- GND
Pin 8- N/C
Pin 9 N/C
Repeat up to 32 total displays.
Note: final display serial line must be terminated with a
150Ω resisitor (use terminator DIP switch on large clock.)
CT-4INCH &
CT-2INCH DOWN TIME CLOSURE AT “0”
+9V DC IN
GND
GND
START SW
STOP SW
RESET SW
MODE SW
GND
SERIAL IN -
SERIAL IN +
GND
TOP OF HOUR RESET INPUT
TIME CLOSURE 4
TIME CLOSURE 3
TIME CLOSURE 2
TIME CLOSURE 1
GND
J4 J6
SERIAL OUT -
SERIAL OUT +
CT-THIN
CT-CONSOLE
CT-DESK
CT-GPS
For Time of Day Only Synchronization
(timers operate independently) - use the remote
control to set the clocks in “RS1” serial time code
mode and wire serial input pins in parallel
(as shown.) Use the serial output pins of the
GPS clock only.
For Time of Day & Downstream Timer
Synchronization - use the remote control
to set the clocks in “RS2” serial time code
mode and wire the serial input to the serial
input pins, and the serial output from the
serial output pins (as shown.) Note that all clocks
downstream from the crossover cable will display
Time of Day from the clock in the chain before the
first crossover cable. Parallel wiring to the serial
input pins can be utilized later down stream if flow
thru of timer data is no longer preferred. Timers
can still be forced to local control by use of the
“MEM6” button on the remote control.
See pg 7 for more details.
J1