Masterclock RC1000 User manual

Masterclock RC1000 User Manual v1 – 2019.04
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RC1000
Dual-Channel Up/Down Timer
User Manual

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Table of Contents
Introduction ............................................................................................................ 2
1 Features and Specifications .................................................................................. 4
1.1 INPUTS ............................................................................................................................................ 4
GPI Inputs ............................................................................................................................................. 4
1.2 OUTPUTS ........................................................................................................................................ 5
GPI Outputs .......................................................................................................................................... 5
RS232 Interface .................................................................................................................................... 5
FRONT PANEL DISPLAY ......................................................................................................................... 5
1.3 MECHANICAL.................................................................................................................................. 6
Electrical ............................................................................................................................................... 6
1.4 ENVIRONMENTAL .......................................................................................................................... 6
2 Unpacking and Installation ................................................................................... 7
2.1 Package Contents ........................................................................................................................... 7
2.2 Connections .................................................................................................................................... 8
Figure 1. RC1000 Rear Panel .......................................................................................................... 8
Figure 2. I/O Connector (25 Pin ‘D’) ............................................................................................... 8
Figure 3. Breakout Adapter ........................................................................................................... 8
2.3 Timecode Connections ................................................................................................................. 10
Applying power to the RC1000 .......................................................................................................... 13
3 Operation ........................................................................................................... 14
3.1 Entering Time and Direction ......................................................................................................... 16
3.2 Programming PRESETs .................................................................................................................. 17
3.3 Recalling PRESETs ......................................................................................................................... 18
3.4 Elapsed Time ................................................................................................................................. 19
3.5 Sending Time to Remote Display with RS-232 .............................................................................. 21
3.6 Stopping and Restarting (Pause) .................................................................................................. 22
3.7 Reversing the Direction of the Count ........................................................................................... 24
3.8 Displaying Input Timecode ........................................................................................................... 24
3.9 Countdown to End of Program (Input Timecode Required) ......................................................... 25
3.10 Returning to Input Timecode After Countdown (Input Timecode Required).............................. 26
3.11 Swapping Channels ..................................................................................................................... 26
3.12 Adding/Subtracting Time to Existing/Running Count ................................................................. 27
3.13 Adding or Subtracting Time (Small Increments) ......................................................................... 28
3.14 Calculator .................................................................................................................................... 29
3.15 Sequence of Countdowns (Follow Buffer) .................................................................................. 30
3.15 Sequence of Countdowns (Follow Buffer) - (Continued) ............................................................ 31
3.16 Disabling Display Selection .......................................................................................................... 33
3.17 Disabling channel Selection......................................................................................................... 33
3.18 Programming GPI Outputs .......................................................................................................... 34
3.19 Programming GPI Inputs ............................................................................................................. 36
Example 1. Configure GPI input 1 to trigger a count down from 60 seconds on Channel A .............. 37
Example 2. Configure GPI input 2 to trigger a count up from 0 seconds on Channel B ..................... 39
3.20 Brightness of Display ................................................................................................................... 41
3.21 Leading Zero Blanking ................................................................................................................. 41
3.22 Re-enabling Lead Zeros ............................................................................................................... 41
Introduction

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Thank you for your purchase of a RC1000 Up/Down Timer from Masterclock. Here you’ll find instructions for unpacking
and installing your device, proper care and configuration.
The RC1000 is a dual-channel up/down timer for production and control applications. This extremely versatile and
functional device is essentially two counters in one. Counts are entered via a numeric keypad and a new count can be
started during a current count or after it has stopped. It can be programmed with 20 channel presets or counts can be
calculated or entered during production. The six-digit dual display can show HH:MM:SS or MM:SS:FF. Each channel
generates time code to sync production equipment or for displaying counts on our TCDS Series of digital clocks or any
clock that accepts raw SMPTE/EBU. In addition, the RC1000 has network capability and can be used for displaying counts
on any Masterclock network NTDS clock (with fw ver or above).
We are here to help. You can reach us using various contact methods (phone, email, etc.) found at our website:
www.masterclock.com
DISCLAIMER
The information contained in this document is subject to change without notice. Masterclock, Inc. (hereinafter
Masterclock or MC) makes no warranty of any kind regarding this material including, but not limited to, the implied
warranties of merchantability and fitness for a specific application. Masterclock shall not be liable for errors contained
herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.

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1 Features and Specifications
1.1 INPUTS
Timecode
Input Selection Automatic Time Code Detection
Input Range Automatic Gain Adjust
Type Single Ended Unbalanced (SE)
or Differential Balanced (DIFF)
Impedance >10 kΩ
SMPTE / EBU 24, 25, 30 fps NDF, & 29.97 DF
Level 0.2-18 Vpp (2Vpp nom)
IRIG – B0 DCLS, PWM
Level 0.5-12Vp (5Vp Nom)
IRIG-B1 Amplitude Modulated
Level 0.5 – 8 Vpp (5 Vpp nom)
Keypad
Presets 20 Channel Independent
Programmable with Recall
Start/Stop Anytime
Chaining (Follow) Buffer 8 Sequences Deep per Channel
Time Calculations Addition & Subtraction
(Stand-alone or to a Channel)
One-Key Calculations Single Frame or Single Second
Increment or Decrement
GPI Inputs
Quantity 2
Type General Purpose Interface Input
Opto-Isolated
Normally Open, Closure to 0VDC return
Level Vpp +/- dB
Minimum Closure Duration 40 mSec
Delay Between Closures 40 mSec
Programmability Any PRESET
Network
Connector RJ45
Type 10/100 MB
Protocols Supported NTP v3, v4 Client,
DHCP v4, v6
for automatic acquisition of network
address, name servers, and time servers
IPv4, IPv6 compatible
SNMP v1,2.2, 3 with custom MIB
Telnet (disabled by default)
SSH

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1.2 OUTPUTS
SMPTE/EBU Timecode
Quantity 2: Channel A & Channel B, Independent
SMPTE / EBU 24, 25, 30 fps NDF, & 29.97 DF
Type Single Ended (Unbalanced) or
Differential (Balanced)
Level 2.3 Vpp / +12 dBm unloaded (high impedance)
2.3 Vpp @ 600 Ω load
2.2 Vpp @ 75 Ω load
2.15 Vpp / +10 dBm into 50 Ω load
GPI Outputs
Quantity 2
Type General Purpose Interface Output
Opto-Isolated
Normally Open, Closure to 0 VDC return
Off State Voltage Level +4V DC pullup through 10 kΩ
Closure Activation Any time match or sequence endpoint
Closure Duration Programmable,
40 mSec to 1sec (0-25 frames)
Max Current Draw 250 mA
RS232 Interface
Interface RS232 Levels
Type Data Set
Setup 9600 Baud, 8 Bits, 1 Stop, No Parity
Format Continuous HH:MM:SS or HH:MM:SS.FF
Front Panel Display
Quantity 2 Time Readouts
Type 6 Digit, 7 Segment
Readout Formats Hours:Minutes:Seconds
Minutes:Seconds.Frames
Display Format 12 hour or 24 hour
Rollover/Rollunder 23:59:29 and 00:00:00:00 respectively
Leading Zero Blanking Yes
Brightness User Selectable

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1.3 MECHANICAL
Dimensions
Width 5.2”, 13.2 cm
Length 8.0”, 20.3 cm
Height 1.75 “, 4.4 cm at deepest point
Weight 1.8 lb., 0.82 kg
Electrical
Power Dual Supply – Internal backup power selection
in event of loss of either DC or PoE.
DC Locking Connector, 2.1 mm Male Jack
+8-28 VDC, 250 mA, external 90-240 VAC Input
to 24VDC Output Switching Power Supply
included
or
RJ45 Connector pins
PoE, +48 VDC per IEEE 802.3af
Signal DB25 Connector – Time Code I/O, GPI, GPO
RJ45 – 10/100 MB Ethernet Network
USB -Type A
1.4 ENVIRONMENTAL
Operational
Temperature 0 to 60 Deg C
Humidity 0 to 90% Non-condensing
Storage
Temperature -32 to 85 Deg C
Humidity 0 to 90% Non-condensing

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2 Unpacking and Installation
2.1 Package Contents
The RC1000 Up/Down Timer is fully tested before shipment to ensure trouble-free service. Please check the
equipment for any visible damage which may have been caused during transit. Please verify that the following
package contents were received.
RC1000 Up/Down Timer Unit
AC to DC power supply with locking connector
DB25 to Terminal Block Adapter
WinDiscovery CD
Cat 5E Ethernet Cable
**Optional PoE (Power over Ethernet)
Single Port Injector
**Ordered Separately
**

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2.2 Connections
Connections to the RC1000 are made on the rear panel of the device. Signal and control connections should be
made before connecting the power for the RC1000.
PIN 1
Figure 1. RC1000 Rear Panel
The primary timing, signal, and control connection interface for Time Code Input, Time Code Output, General
Purpose Interface Inputs & Outputs, and the RS232 serial communications is via the 25 pin DB25 connector,
labeled “CONTROL”, on the rear of the unit. The DB25 is arranged in 25 pins of two rows. When viewed from
the rear, as shown in Figures 1 & 2, Pin 1 of the DB25 connector, is located at the upper left- hand corne
r.
CONTROL
PIN 1
Figure 2. I/O Connector (25 Pin ‘D’)
A DB25 breakout adapter with push insert terminal block connects has been included with the RC1000 to allow
quick connection and configuration of the wiring. The breakout adapter board is numbered with each terminal
block input corresponding to the DB25 pin number of the RC1000 Control connector. Note: An additional
terminal block connection, label “G” is connected to the metal “shield” of the DB25 breakout adapter, which in
turn connects to the DB25 connector and the case of the RC1000. This connection may be used to extend the
shield of the signal cabling
.
Figure 3. Breakout Adapter

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Table 1 contains the pin outs of the external I/O connector. Table 1 has been color coded to show the grouping of the signals relative
to the closest signal ground/signal return pin of the I/O connector.
TABLE 1. I/O CONTROL Connector Pinout
Signal
25 Pin D Connector Pin#
2
6 Position Terminal
Block Connector #
(of DB25 Breakout Adapter)
Ground 1 1
RS-232 TX 2 2
RS-232 RX 3 3
Ground 4 4
Ground 5 5
Ground 6 6
Ground 7 7
Timecode Input + 8 8
Ground 9 9
Primary (Channel A) TC Out + 10 10
Ground 11 11
Secondary (Channel B) TC Out + 12 12
Ground 13 13
Spare (No Connect) 14 14
Ground 15 15
GP Input #0 16 16
GP Input #1 17 17
GP Output #0 18 18
GP Output #1 19 19
Spare (No Connect) 20 20
Timecode Input - 21 21
Spare (No Connect) 22 22
Primary (Channel A) TC Out - 23 23
Spare (No Connect) 24 24
Secondary (Channel B) TC Out - 25 25
Shield Ground Outer Shell 26 (G)

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2.3 Timecode Connections
The basic timecode input and output connections are detailed below.
Single Ended (SE) unbalanced such as those distributed by 50 Ω coax or twisted pair cable can be connected using
the center pin to the TC+ (Timecode Signal), and the outer conductor (signal return) to the closest signal
ground/return pin of the I/O connector.
Differential (DIFF) signals are considered balanced, and should be distributed with twisted shielded pair, Twinax,
or Triax cables if possible. Differential signals which use the TC+ and TC- signals, may also be distributed with an
additional signal reference /return. If a separate shield is present on the wire bundle, it may also be connected
to the signal ground of the system which may be the outer shell of the connector, or if using the 25 pin Terminal
Block adapter, connection # 26, to reduce noise. However, the shield wire should be terminated on the end of
the cable which bypasses the noise.
2.3.1 Output Timecode — Single Remote Display
Channel A is the Primary Time Code Output. Connect the remote timecode display (such as TCDS26)
to primary time code output at pins 10 ,11, and 23 on the external 25-pin I/O connector, using the
guidelines for SE and DIFF signals of the prior section.
The DISPLAY key will now allow both channels to be viewed remotely on the single display.
2.3.2 Output Timecode — Dual Remote Displays
Channel B is the Secondary Time Code Output.
Connect the first remote timecode display (Channel A) to primary TC output as described in the previous
section for single remote display.
Connect the second remote timecode display (Channel B) to secondary TC output using Pins 12,13,
and 25 on the I/O connector, using the guidelines for SE and DIFF signals of the prior section.
The SHIFT-DISPLAY key should now be pressed to lock the outputs on Channel A and Channel B,
respectively, assuming the ‘A’ LED is lighted on the DISPLAY key.
The RC1000 can independently generate these time code formats on each channel based upon its current reference time
or time code input:
SMPTE 24, 25, 30, or drop frame
The timecode connections should be made with shielded cable, if
possible, especially if long distances are separating the RC1000
and the remote display(s).

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2.3.3 Input Timecode — Time Reference Input
If a more precise timecode source is available, such as the, it should be connected to the RC1000
timecode reference input. This will then give the RC1000 the same accuracy as the master source and
will frame-lock the two together. The input time code may be either single ended (+TC &
Return/Ground) or differential (+TC, -TC, Return/Ground). Consult the DB25 pinout table for
determining the proper input pins for each case.
Connect the time code from your time code source to primary time code input at pins 8 ,9, and 21 on the
external 25-pin I/O connector, using the guidelines for SE and DIFF signals of the prior section.
The input time code format will be automatically detected and locked to by the time code reader,
and an automatic gain control circuit will adjust the input time code amplitude.
The RC1000 can auto-detect and lock to these time code input formats:
SMPTE 24, 25, 30, or drop frame
IRIG-B0 DCLS, and IRIG-B1 AM
2.4 General Purpose I/O Connections
2.4.1 General Purpose Output
Two independently programmable general-purpose outputs (GP0) are available on the RC1000. Each
GPO uses an opto-isolator for isolation; and is protected from overvoltage by a varistor. The
normally open (NO) open circuit voltage of each opto-isolated output is +4VDC, with an output
resistance of 1kΩ.
Connect the GPO #0 at pins 18 and 6, and GPO #1 at pins 19 and 7, respectively, on the external 25-pin I/O
connector.
Each GPO and may be programmed to be a single-shot (1 time) active low output or trigger based
upon a timer event from either Channel A or Channel B time code output. The timer event can be
scheduled to be at the start of a count, at the end of a count, or at a certain HH:MM:SS.FF in the
count..
When active the output voltage will drop to OVDC (signal reference) for the duration specified in
number of SMPTE time code frames. The exact duration length is dependent upon the output time
code selected for the channel that triggers the output, and the number of frames selected. Active
duration can range from 1 to the maximum frames per second (24, 25, 30), or 1 second.
The RC1000 be programmed to output an active low signal for a duration of to these time code input
formats:
More information about programming and using the general-purpose outputs (GPO’ s) may be found
in section 3.18
SMPTE (fps) Frame Duration
(mSec)
Min Active Time
(mSec)
Max Active Time
(sec)
24 41.7 41.7 1
25 40 40 1
30 33.3 33.3 1

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2.4.2 General Purpose Input
Two independently programmable general-purpose inputs (GPI) are available on the RC1000. Each
GPI uses an opto-isolator for isolation; and is protected from overvoltage by a varistor, and Zener
diode clamp. The normally open (NO) open circuit voltage of each opto-isolated input is +4VDC, with
an input resistance of 300 Ωs
Connect the GPI #0 at pins 16 and 4, and GPI #1 at pins 17 and 5, respectively, on the external 25-pin I/O
connector.
Each GPI and may be programmed to be an active low input or trigger based upon an external event
(such as a momentary push button switch, a pedal switch, or dry contact relay closure) and initiate a
count-down or count-up timer event on either Channel A or Channel B time code output. Each
closure will immediately restart the count from the initial PRESET value.
The nominal closure duration specified by the minimum frame duration of the time code.
More information about programming and using the general-purpose outputs (GPI’ s) may be found
in section 3.19
2.5 RS232 Serial Port Connection
An RS232 serial port has been provided on the RC1000 for use with dummy displays that utilize the
RS-232 data to display time, or a monitoring computer. The RS232 port will output the time/count
data from the active channel.
Pins 2,3, and 15 are reserved for the RS232 port. See Table 1. If you have difficulty receiving and
monitoring the RS232 data try swapping pins 2 and 3 to create a NULL modem interface, and verify
your settings on the connected device.
RS232 data is output at 9600 Baud, 8 Bits, 1 Stop, No Parity
More information about sending time to a remote display via the RS232 may be found in section 3.5
SMPTE (fps) Frame Duration
(mSec)
Nominal Closure
Time (mSec)
24 41.7 41.7
25 40 40
30 33.3 33.3

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2.6 Connecting Power
2.6.1 DC Power
The RC1000 may be powered by a DC voltage of +8VDC to +28 VDC. An AC to DC power supply has been
provided with a locking connector. Connect the threaded locking connector of the AC to DC power supply to the
connector marked DC IN of the RC1000. Plug the AC to DC power supply plug into an appropriate AC power
receptacle.
The power consumption of the unit is mA at +8 Vdc DC input
2.6.2 Power over Ethernet (PoE)
The RC1000 may also be powered by PoE (Power over Ethernet) using the spare pins of the Ethernet cable per
the IEEE 802.3af Standard. Connect one end of the Ethernet cable to the RC1000 connector labeled ETHERNET.
Connect the other end of the Ethernet cable to the PoE output port of an appropriate +48 VDC IEEE 802.3af
compliant Power over Ethernet switch, PoE router, or single port PoE injector.
2.6.3 Dual (Redundant) Power
The RC1000 may also be simultaneously powered by both PoE (Power over Ethernet) using the spare pins of the
Ethernet cable per the IEEE 802.3af Standard, and by DC power using the DC Power Input. In the event that one
of the power sources is not available, the alternate source will continue to power the RC1000. This feature may
be advantageous when a critical application is required such as remotely triggering count events.

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3 Operation
Key Functions
A brief explanation of each key is given
below followed by the corresponding
shifted (SHIFT) function of that key.
DISPLAY: switches the channel to be sent to the
RS232 port
SHIFT-DISPLAY: automatically locks the DISPLAY
key in the current position
CHAN: changes the active channel. The active
channel is indicated by the LEDs located on the
CHAN key.
SHIFT-CHAN: locks the CHAN key on the active
channel and prevents any additional switching
of channels. This function may be un-locked at
any time by again pressing the SHIFT-CHAN
combination.
SEC/FRM: shifts the currently active channel
between the HH:MM:SS and MM:SS.FF display.
GPI (SHIFT-SEC/FRM): used to program the
General Purpose Interface (GPI) inputs and
outputs.
UP/DN: indicates the direction of the timing
sequence. The LED above either the UP or DN
label indicates the direction of the sequence in
the active channel.
SHIFT-UP/DN: instantly changes the direction of
the currently active channel
INPUT: selects the input SMPTE/EBU timecode
(if available) for use on a particular channel.
SHIFT-INPUT: activate/deactivate the Return-to-
Input feature
CLEAR: clear keypad data entries from the active
channel display and correct keypad data entry
mistakes (edit mode).
CLR ALL (SHIFT-CLEAR): clears the currently
active channel to all dashes.

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Key Functions
(continued)
A brief explanation of each key is given below followed by the corresponding shifted (SHIFT) function of
that key.
PRESET: allows sequence programming and recall
+ (Plus): add time addition calculations
INC (SHIFT +): increment the time by either one second or one frame
- (Minus): subtract time subtraction calculations.
DEC (SHIFT -): decrement the time by one second or one frame
START/STOP: functions as an “enter”, “start” & “pause” key on the active channel. Serves as an “equals” key when
performing time calculations
FOLLOW DUAL (SHIFT-START/STOP): enters the sequence into the follow buffer to stack (chain) sequences. Operate
like the START/STOP key, except it will operate simultaneously on both channels.
0 to 9: These are the data input keys arranged like a calculator keypad. The digit keys store or recall preset time
sequences as programmed by the operator (PRESET mode)
SHIFT-0 to SHIFT-9: The shift digits also store or recall preset time sequences (PRESET mode).
Special Functions:
SHIFT-0: Shows SMPTE frame rate generation on selected channel. Pressing + key allows selection of available FPS.
SHIFT-1: Used to change the local display brightness, from brightest to dimmest, in small decrements. A total of 15
brightness levels are available.
SHIFT-2: Shows the output time format. Pressing + key allows selection of either UTC or Local.
SHIFT-3: Shows the output hourly time format. Pressing + key allows selection of either 12 hour or 24 hour.
SHIFT-4: Used to immediately transfer or transpose Channel A to Channel B, and vice versa.
SHIFT-5: Not used.
SHIFT-6: Not used.
SHIFT-7:RS-232 Port format , Pressing + key allows selection of either HH:MM:SS or HH:MM:SS:FF .
SHIFT-8: Displays firmware version and release date. Performs key test (in conjunction with Telnet command).
SHIFT-9: This toggles the leading zero blanking control of the selected channel. (Note: remote time displays are not
changed.)

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3.1 Entering Time and Direction
::
::
S
Select channel A or B using the CHAN button.
Select display format, either hours:minutes:seconds (SEC) or
minutes:seconds:frames (FRM)
Enter the time via the keypad in hours:minutes:seconds
or minutes:seconds:frames.
Note: If a mistake occurs while
entering the time, press the CLEAR button,
and reenter the time
Select the direction.
Press START/STOP to start the timer

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Enter the time via the keypad
Select the direction.
Select the PRESET mode
The LED will start flashing.
A total of 20 programmable memory locations or
'presets' are available.
To select a memory location, for the first 10
programmable presets, press its corresponding
number from 0 to 9,
or
for memory locations 10 to 19,
simultaneously press and hold the SHIFT key and press
its corresponding key number 0 to 9.
(e.g. press SHIFT and 6).
The PRESET light will stop flashing to indicate that the
memory location has been selected.
3.2 Programming PRESETs
::

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Select channel A or B.
Select PRESET mode. The LED will illuminate.
Select the memory location as previously described above
in "Programming Presets", using (0 - 9)
for memory locations 10 to 19,
simultaneously press the SHIFT key and its corresponding
key number 0 to 9.
(e.g. press SHIFT and 6).
The PRESET light will stay illuminated, and the selected
channel will have the memory location loaded and shown
on the display.
Press START/STOP to start the timer
3.3 Recalling PRESETs
.
::

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Select channel A or B.
Input timecode. The counter will accept timecode and
display it on the selected channel.
*Note: input timecode is only valid for timecode
clocks, network (NTDS) clocks will only display count
information, or network time
Mark the elapsed time (the counter will stop
counting).
Return to timecode
3.4 Elapsed Time
3.4.1 Using Input Time Code

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Select channel A or B.
Press CLEAR, or CLR ALL (SHIFT and CLR )
Select the other channel.
Enter the start time
Select channel UP or DOWN
Press START/STOP. The counting will begin in the
direction selected.
Mark the time; repeat. The current channel will show
the elapsed (marked) time, while counting will
continue in the other channel.
3.4.2 Using 2 Channels
or
.
::
.