Arbiter Systems 1200B User manual

MODEL 1200B
MODEL 1201B/C
GNSS SYNCHRONIZED CLOCK
OPERATION MANUAL
ARBITER SYSTEMS, INC.
PASO ROBLES, CA 93446
U.S.A.
WWW.ARBITER.COM

ii
Description This manual describes the operation and configuration of the Model 1200B and Model
1201B/C GNSS Synchronized Clocks. It is issued for reference only, at the convenience of Arbiter
Systems. Reasonable effort was made to verify that all contents were accurate at publication.
Check with Arbiter Systems for any revisions made since the original publication date.
Contact Information
Arbiter Systems, Inc.
1324 Vendels Circle, Suite 121
Paso Robles, CA 93446
[phone]
Website: www.arbiter.com
E-mail: techsupp[email protected]
E-mail: [email protected]
How to Determine Firmware Version Date
To display the firmware date for the clock, press SYSTEM until reaching the Serial Number (S/N)
and firmware version screen. To determine the current firmware date for this product, see the
Arbiter website.
Firmware Updates – Main Board
The clock main board requires a flash package file and a utility program to update firmware. Both
are downloadable from the Arbiter website.
Firmware Updates – Network Options
Network options require an additional flash package and a modern web browser to update firmware.
Flash package file updates are downloadable from the Arbiter website.
Firmware Updates – Non-Network Options
Some non-network options require an EEPROM to update firmware. For example, the Power
System Time, Frequency, and Phase Monitor requires an EEPROM replacement on the option
board to upgrade firmware.
NOTE: Where applicable, firmware updates may include supplemental documentation, or a new
version of this manual.

iii
LIMITED WARRANTY Arbiter Systems makes no warranty, expressed or implied, on any
product manufactured or sold by Arbiter Systems except for the following limited warranty against
defects in materials and workmanship on products manufactured by Arbiter Systems.
Products manufactured by Arbiter Systems are guaranteed against defective materials and
workmanship under normal use and service from the date of delivery for a period of ten years.
The responsibility of Arbiter Systems under this warranty is limited to repair or replacement, at
Arbiter Systems’ option, of any product found to be defective. Arbiter Systems shall have no
liability under this warranty unless it receives written notice of any claimed defect.
For warranty service or repair, products must be returned to a service facility designated by Arbiter
Systems. Buyer shall prepay all shipping charges to Arbiter Systems, and Arbiter Systems shall pay
shipping charges incurred in returning the product to Buyer. However, Buyer shall pay all shipping
charges, duties and taxes for products returned to Buyer in a country other than the United States
of America.
THE WARRANTY SET FORTH HEREIN CONSTITUTES THE ONLY WARRANTY OBLIGA-
TIONS OF ARBITER SYSTEMS, EXPRESSED OR IMPLIED, STATUTORY, BY OPERATION
OF LAW, OR OTHERWISE. ARBITER SYSTEMS DISCLAIMS ANY WARRANTY OF MER-
CHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, AND BUYER EXPRESSLY
WAIVES ALL OTHER WARRANTIES.
This limited warranty does not extend to any product, which has been subject to:
1. Improper use or application, abuse, or operation beyond its rated capacity, or contrary to the
instructions in the operation and maintenance manuals (if any);
2. Accident;
3. Repair or maintenance performed by Buyer, except in accordance with the operation and
maintenance manuals, if any, and any special instructions of Arbiter Systems;
4. Modification without the prior written authorization of Arbiter Systems (whether by the
substitution of non-approved parts or otherwise). The remedies provided herein are Buyer’s
sole and exclusive remedies. In no event shall Arbiter Systems be liable for direct, indirect,
incidental or consequential damages (including loss of profits), whether based on contract,
tort, or other legal theory.
FOR THE FASTEST POSSIBLE SERVICE, PLEASE PROCEED AS FOLLOWS:
1. Notify Arbiter Systems, Inc., specifying the instrument model number and serial number and
giving full details of the difficulty. Service data or instrument-return authorization will be
provided upon receipt of this information.
2. If instrument return is authorized, forward prepaid to the manufacturer. If it is determined
that the instrument is not covered by this warranty, an estimate will be made before the
repair work begins, if requested.
See Contact Information on page ii.

iv

v
Model 1200B and Model 1201B/C
GNSS Synchronized Clock
Operation Manual
Chapter 1 Unpacking the Clock
Chapter 2 Front and Rear Panels
Chapter 3 Connecting Inlet Power, Input and Output Signals
Chapter 4 Antenna and Cable Information
Chapter 5 Setting Internal Jumpers
Chapter 6 Startup and Operation
Chapter 7 1201 Utility Software
Chapter 8 Front Panel Menu System
Chapter 9 Timing, IRIG-B and Pulses
Chapter 10 Relay Contacts and Event Inputs
Chapter 11 Serial Communications and Command Set
Chapter 12 Specifications and Technical Details
Appendix A Using a Surge Arrester
Appendix B Options List
Appendix C Self-Signed Certificate for HTTPS
Appendix D CE Mark Certification
Appendix E Statement of Compliance
Index
Copyright Arbiter Systems Incorporated January 2021 All rights reserved.
International copyright secured.
Publication number: PD0051300G
Reorder number: AS0096700

Contents
1 Getting Started 1
1.1 Model 1200B and 1201B/C Common Features . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Model1201B/CAdvantages................................ 1
1.3 StandardAccessories.................................... 2
1.4 HandlingPrecautions ................................... 2
1.5 Unpacking and Locating Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.6 RemovingRackmountEars ................................ 3
1.6.1 RemovalInstructions................................ 3
2 Front and Rear Panels 4
2.1 Introduction......................................... 4
2.2 Front Panel Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2.1 Command Key Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2.2 LEDStatusIndicators............................... 5
2.2.3 LCDDisplay .................................... 6
2.2.4 Large LED Display: Model 1201C . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Rear Panel Identification and Connectors . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Connecting Inlet Power, Input and Output Signals 7
3.1 Universal, High Voltage Power Supply Inlet . . . . . . . . . . . . . . . . . . . . . . . 7
3.1.1 Universal Supply: Connecting Inlet Power . . . . . . . . . . . . . . . . . . . . 7
3.2 LowDC,PowerSupplyInlet ............................... 8
3.2.1 Low DC: Connecting Inlet Power . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2.2 Surge Withstand Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Power Supply Fuses, Types and Ratings . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3.1 ReplacingFuses................................... 8
3.4 AntennaInput ....................................... 9
3.5 EventInput......................................... 9
3.6 SingleFiberOpticOutput................................. 9
3.7 RS-232 and RS-485 Communication Ports . . . . . . . . . . . . . . . . . . . . . . . . 9
3.8 SPDTRelayContacts ................................... 9
3.9 StandardInputs/Outputs ................................. 10
3.10ConnectingI/OSignals .................................. 10
3.11OptionBoardLocation................................... 10

CONTENTS vii
4 GNSS Antenna and Cable Information 11
4.1 GNSS Antenna Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1.1 MountingtheAntenna............................... 11
4.1.2 Optional Antenna Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . 12
4.2 Verifying Antenna and Cable Operation . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2.1 Checking the Antenna Status . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2.2 Other Antenna/Cable Indications . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.3 GNSSSurgeArrester.................................... 15
4.3.1 Using the GNSS Surge Arrester . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.4 Technical Details of GNSS Antennas and Cables . . . . . . . . . . . . . . . . . . . . 15
4.4.1 Length and Loss Considerations . . . . . . . . . . . . . . . . . . . . . . . . . 15
5 Setting Internal Jumpers 18
5.1 CoverRemoval ....................................... 18
5.2 Setting Mainboard Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.2.1 Digital Outputs: Port 1, Port 2 and Port 3 . . . . . . . . . . . . . . . . . . . 20
5.2.2 IRIG-B Unmodulated, 5 V Outputs . . . . . . . . . . . . . . . . . . . . . . . 20
5.2.3 1PPS,5VOutput................................. 20
5.2.4 Programmable Pulse, 5 V Outputs . . . . . . . . . . . . . . . . . . . . . . . . 21
5.2.5 AnalogOutput:Port2 .............................. 21
5.2.6 EventInput..................................... 21
5.2.7 RelayOperation .................................. 21
5.2.8 Fiber Optic Output: Optional . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.2.9 Final Setup Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6 Startup and Operation 23
6.1 InitialStartupSequence .................................. 23
6.1.1 Display Indication at Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.1.2 Clock Time, Startup Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.2 Operating Modes: Model 1201B/C Only . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.2.1 Learn and Normal Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.2.2 FaultsandAlarms ................................. 24
6.3 Time/DateKeyDisplays.................................. 25
6.3.1 Time and Date Display, UTC . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.3.2 Time of Year Display, UTC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.3.3 Time and Date Display, Local Time . . . . . . . . . . . . . . . . . . . . . . . 25
6.3.4 Time of Year Display, Local Time . . . . . . . . . . . . . . . . . . . . . . . . 25
6.4 AntennaKeyDisplays ................................... 26
6.4.1 GNSSTracking................................... 26
6.4.2 GNSS Signal-to-Noise Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.4.3 GNSSSetting.................................... 26
6.4.4 AntennaStatus................................... 26
6.4.5 Position Display Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.5 TimingKeyDisplays.................................... 27
6.5.1 ClockStatus .................................... 27
6.5.2 TimeQuality.................................... 27

viii CONTENTS
6.5.3 Holdover Estimated Uncertainty Model 1201B/C Only . . . . . . . . . . . . . 28
6.5.4 Event/Deviation .................................. 28
6.6 SystemKeyDisplays.................................... 29
6.6.1 Serial Number and Firmware Date . . . . . . . . . . . . . . . . . . . . . . . . 29
6.6.2 PowerSupply.................................... 29
6.6.3 EEPROMErrors.................................. 29
6.6.4 FaultIndications.................................. 29
7 Utility Software 31
7.1 ClockSecurityNotes.................................... 31
7.2 Configuring with the Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.2.1 ObtainingtheUtility................................ 31
7.2.2 InstallingtheUtility................................ 32
7.2.3 How the Utility Software Works . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.3 Security ........................................... 33
7.3.1 SecurityFeatures.................................. 33
7.4 Establishing a Serial Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.5 Reading the Clock Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7.6 StartingtheLearnMode.................................. 36
7.7 TheStatusScreen ..................................... 37
7.7.1 Definitions ..................................... 37
7.8 ThePerformanceScreen.................................. 38
7.9 TheFaultScreen...................................... 39
7.10TheVersionScreen..................................... 40
7.11 COM1 & COM2 – Communication Screens . . . . . . . . . . . . . . . . . . . . . . . 41
7.12TheTimeScreen ...................................... 42
7.13TheOutputsScreen .................................... 43
7.13.1 Standard IRIG-B Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.13.2 AuxiliaryIRIG-BMode .............................. 44
7.13.3 Seconds Per Pulse Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
7.13.4 PulsePerHourMode ............................... 45
7.13.5 PulsePerDayMode................................ 46
7.13.6 SingleTriggerMode ................................ 46
7.13.7 SlowCode...................................... 47
7.13.8 DCF77 and DCF77 Modified . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7.14MiscellaneousScreen.................................... 48
7.14.1 MiscellaneousItems ................................ 48
7.15OptionScreen........................................ 49
7.16SecurityScreen ....................................... 50
7.17UploadingaConfiguration................................. 51
7.18UploadingNewFirmware ................................. 53
7.19 Setting to Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

CONTENTS ix
8 Front Panel Menu System 55
8.1 MenuSystem ........................................ 55
8.1.1 UpperKeys..................................... 55
8.1.2 LowerKeys..................................... 56
8.1.3 Configure Using the Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
8.1.4 TheSetupMenus.................................. 57
8.1.5 Default Firmware Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
8.1.6 Configuration Flow Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
8.1.7 Numeric Data Entry Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
8.2 SerialCOMPortSettings ................................. 59
8.2.1 SerialCOM1.................................... 59
8.2.2 SerialCOM2.................................... 59
8.3 SettingtheLocalTime................................... 60
8.3.1 Set Daylight Saving Time (DST) . . . . . . . . . . . . . . . . . . . . . . . . . 60
8.4 Setting Out of Lock Indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
8.5 Set Mulitpurpose Relay Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 63
8.5.1 Triggering the Relay with a Programmable Pulse . . . . . . . . . . . . . . . . 63
8.6 SettingtheBackLight................................... 64
8.7 SettingSystemDelays ................................... 64
8.8 Setting Programmable Pulse Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
8.8.1 Entering Numerical Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
8.8.2 Programmable Pulse: Seconds-Per-Pulse Mode . . . . . . . . . . . . . . . . . 66
8.8.3 Programmable Pulse: Pulse-Per-Hour Mode . . . . . . . . . . . . . . . . . . . 67
8.8.4 Programmable Pulse: Pulse-Per-Day Mode . . . . . . . . . . . . . . . . . . . 68
8.8.5 AuxiliaryIRIG-B.................................. 69
8.8.6 Programmable Pulse: Single Trigger . . . . . . . . . . . . . . . . . . . . . . . 70
8.8.7 Programmable Pulse: Slow Code . . . . . . . . . . . . . . . . . . . . . . . . . 71
8.8.8 Programmable Pulse: DCF77 . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
8.9 SettingIRIGTimeData.................................. 72
8.10 Setting the Event or Deviation Modes . . . . . . . . . . . . . . . . . . . . . . . . . . 72
8.11SettingOptionControl................................... 73
8.12 Model 1201C LED Display Date Format . . . . . . . . . . . . . . . . . . . . . . . . . 73
9 Timing, IRIG-B and Pulses 74
9.1 Introduction......................................... 74
9.2 Timing Output Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
9.2.1 Inputs and Outputs: Port 1, Port 2, Port 3 . . . . . . . . . . . . . . . . . . . 75
9.2.2 DigitalDrivers ................................... 75
9.2.3 AnalogDriver.................................... 75
9.3 OutputSignalDescription................................. 76
9.3.1 IRIG-BDescription ................................ 76
9.3.2 Modulated and Unmodulated IRIG-B . . . . . . . . . . . . . . . . . . . . . . 76
9.3.3 IRIG-B IEEE C37.118.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
9.3.4 1 Pulse-Per-Second (1 PPS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
9.3.5 Programmable Pulse (PROG PULSE) . . . . . . . . . . . . . . . . . . . . . . 78
9.3.6 Programmable Pulse with Open Drain, Setup . . . . . . . . . . . . . . . . . . 78

x CONTENTS
9.3.7 Protecting the 200 V FET Connection . . . . . . . . . . . . . . . . . . . . . . 78
9.3.8 DCF77TimeSignal ................................ 78
9.4 ConnectingtheOutputs.................................. 79
9.4.1 Attaching Cables to Screw Terminals . . . . . . . . . . . . . . . . . . . . . . . 80
9.4.2 How Far Can I Run IRIG-B Cabling? . . . . . . . . . . . . . . . . . . . . . . 80
9.4.3 Synchronizing Multiple IED’s From One Clock Output . . . . . . . . . . . . . 80
9.4.4 Connecting Unmodulated IRIG-B . . . . . . . . . . . . . . . . . . . . . . . . 80
9.4.5 Connecting Modulated IRIG-B . . . . . . . . . . . . . . . . . . . . . . . . . . 81
9.4.6 WireLosses..................................... 81
9.4.7 Voltage Matching for Modulated IRIG-B . . . . . . . . . . . . . . . . . . . . 81
9.4.8 CableDelays .................................... 82
9.4.9 Solutions ...................................... 82
10 Relay Contacts and Event Inputs 83
10.1RelayContacts ....................................... 83
10.1.1 Introduction .................................... 83
10.1.2 RelayOperation .................................. 83
10.1.3 Standard Voltage Relay Ratings . . . . . . . . . . . . . . . . . . . . . . . . . 83
10.1.4 High DC-Voltage Relay Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . 84
10.2 Event and 1 PPS Deviation Recording . . . . . . . . . . . . . . . . . . . . . . . . . . 84
10.2.1 Event Timing and Recording . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
10.2.2 EventTimingLatency............................... 84
10.2.3 1 PPS Deviation Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . 84
10.2.4 1 PPS Deviation Measurement Principle . . . . . . . . . . . . . . . . . . . . . 85
10.2.5 Event Timer Input Channel Configuration . . . . . . . . . . . . . . . . . . . . 85
10.2.6 FirmwareSetup................................... 85
10.2.7 DisplayingData .................................. 85
10.2.8 1PPSDeviation .................................. 86
10.2.9 ClearingRecords.................................. 86
11 RS-232C Command Set 87
11.1Introduction......................................... 87
11.2StandardCommandSet .................................. 87
11.2.1 Installing Custom Broadcast Strings . . . . . . . . . . . . . . . . . . . . . . . 88
11.2.2 Broadcast Mode Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
11.2.3 EventModeCommands.............................. 93
11.2.4 Status Mode Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
11.2.5 SystemLogMessages ............................... 96
11.2.6 Local / Daylight Saving Time Setup Commands . . . . . . . . . . . . . . . . 96
11.2.7 Front Panel Control Commands . . . . . . . . . . . . . . . . . . . . . . . . . 97
11.2.8 IRIG-B Data Output Commands . . . . . . . . . . . . . . . . . . . . . . . . . 98
11.2.9 Date and Time Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
11.2.10 Programmable Pulse Output Commands . . . . . . . . . . . . . . . . . . . . . 99
11.2.11 Antenna System Delay Commands . . . . . . . . . . . . . . . . . . . . . . . . 100
11.2.12 Out-of-Lock Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
11.2.13 Miscellaneous Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

CONTENTS xi
11.3 Custom Broadcast String Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
11.3.1 Installing a Custom String . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
11.3.2 Start Custom Broadcast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
11.3.3 Return Custom String . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
11.3.4 Constructing a Custom String . . . . . . . . . . . . . . . . . . . . . . . . . . 103
11.3.5 String Setup Examples and Tutorial . . . . . . . . . . . . . . . . . . . . . . . 105
12 Technical Specifications and Operating Parameters 108
12.1FunctionalDescription...................................108
12.1.1 Front Panel Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
12.1.2 Processing......................................108
12.1.3 PowerSupply....................................109
12.1.4 NetworkSection ..................................109
12.1.5 LegacySection ...................................109
12.1.6 OptionConnectors.................................109
12.2 GNSS Receiver Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
12.2.1 InputSignal.....................................109
12.2.2 TimingAccuracy..................................109
12.2.3 Position Accuracy (rms) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
12.2.4 SatelliteTracking..................................110
12.2.5 GNSS Acquisition Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
12.3I/OConfiguration .....................................110
12.3.1 I/O Connectors: Main Board . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
12.3.2 Standard Output Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
12.3.3 Event Input/1 PPS Deviation . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
12.3.4 MultifunctionRelay ................................110
12.4SystemInterface ......................................111
12.4.1 Broadcast Data Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
12.4.2 Synchronization ..................................111
12.5AntennaSystem ......................................112
12.5.1 AntennaCable ...................................112
12.6OperatorInterface .....................................112
12.6.1 SetupMethods ...................................112
12.6.2 SetupFunctions ..................................112
12.6.3 Display .......................................112
12.6.4 DisplayFunctions .................................113
12.6.5 Annunciators ....................................113
12.7PhysicalSpecifications...................................113
12.7.1 Dimensions .....................................113
12.7.2 Weight........................................113
12.8 Temperature and Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
12.9 Power Inlet Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
12.9.1 Power Inlet Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
12.9.2 Electro-Magnetic Interference (EMI) . . . . . . . . . . . . . . . . . . . . . . . 114

xii CONTENTS
A Using a Surge Arrester 115
A.1 Description .........................................115
A.2 Installation .........................................116
A.2.1 MountingLocation.................................116
A.2.2 GroundConnection ................................116
A.2.3 Antenna and Clock Connections . . . . . . . . . . . . . . . . . . . . . . . . . 116
A.2.4 Weather Sealing the Connections . . . . . . . . . . . . . . . . . . . . . . . . . 116
A.2.5 SuggestedMounting ................................116
A.3 PhysicalDimensions ....................................116
B Options List 118
B.1 Introduction.........................................118
B.2 Universal Inlet Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
B.2.1 High Range Universal Supply with Terminal Power Strip, SWC . . . . . . . . 119
B.2.2 Specifications....................................119
B.3 LowDCInletPowerSupply................................120
B.3.1 22 Vdc to 67 Vdc ONLY, Terminal Power Strip, SWC . . . . . . . . . . . . . 120
B.3.2 Specifications....................................120
B.4 Holdover Oscillator (1201B/C Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
B.5 OneFiberOpticOutput..................................121
B.6 Four Configurable Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
B.6.1 GeneralDescription ................................121
B.6.2 Specifications....................................121
B.6.3 GeneralInformation ................................121
B.7 FourFiberOpticOutputs.................................124
B.7.1 Specifications....................................124
B.7.2 Output Jumper Enable (JMP2 – JMP5) . . . . . . . . . . . . . . . . . . . . . 124
B.8 8-Channel High Drive IRIG-B Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . 126
B.8.1 GeneralDescription ................................126
B.8.2 Specifications....................................126
B.8.3 OptionSetup....................................126
B.8.4 Output Load and Loop Example: Unmodulated IRIG-B . . . . . . . . . . . . 128
B.8.5 Connecting Load(s) to Output Bus . . . . . . . . . . . . . . . . . . . . . . . . 129
B.8.6 Output Loading (Modulated IRIG-B) . . . . . . . . . . . . . . . . . . . . . . 130
B.9 Power System Time, Frequency and Phase Monitor . . . . . . . . . . . . . . . . . . . 131
B.9.1 GeneralDescription ................................131
B.9.2 Discussion......................................131
B.9.3 System Reference Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
B.9.4 Firmware Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
B.9.5 Calibration .....................................132
B.9.6 PhaseCalibration .................................132
B.9.7 Amplitude Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
B.9.8 Option: Specific RS-232 Commands . . . . . . . . . . . . . . . . . . . . . . . 133
B.9.9 OptionCommands.................................133
B.10 Four Additional Outputs and Dry Contacts; +25/50 Vdc . . . . . . . . . . . . . . . 139
B.10.1GeneralDescription ................................139

CONTENTS xiii
B.10.2Specifications....................................139
B.10.3 Firmware Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
B.10.4 Output Jumper Setting Changes . . . . . . . . . . . . . . . . . . . . . . . . . 142
B.11NTP/PTPServer......................................144
B.11.1GeneralDescription ................................144
B.11.2 NTP/PTP Server Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
B.11.3WebInterface....................................148
B.11.4 SSH Console Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
B.11.5SNMPSupport...................................175
B.11.6 NTP/PTP Server Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 186
B.11.7 Time Zone Format Strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
B.12FourBNCConnectors ...................................188
B.12.1GeneralDescription ................................188
C Creating a Self-Signed Certificate 189
C.1 HTTPS/SSLCertificate ..................................189
C.1.1 Step 1 - Generate a Private Key . . . . . . . . . . . . . . . . . . . . . . . . . 189
C.1.2 Step 2 - Generate a Certificate Signing Request (CSR) . . . . . . . . . . . . . 189
C.1.3 Step 3A - Purchase a Certificate . . . . . . . . . . . . . . . . . . . . . . . . . 190
C.1.4 Step 3B - Generate a Self Signed Certificate . . . . . . . . . . . . . . . . . . . 190
C.1.5 Step 4 - Create the PEM File . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
D CE Mark Certification 192
E Statement of Compliance 194

List of Figures
1.1 PackagingofAccessories.................................. 2
1.2 AttachingRackmountEars ................................ 3
2.1 Model 1200B and Model 1201B/C Front Panel Description . . . . . . . . . . . . . . 4
2.2 Keypad and Annunciator LEDs (LEARN is labeled SURVEY on the 1200B) . . . . 5
2.3 Model 1200B and Model 1201B/C Rear Panel Description . . . . . . . . . . . . . . . 6
3.1 Universal Power Supply Inlet Connector . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Low DC Power Supply Inlet Connector . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 GNSSAntennaConnector................................. 9
3.4 Communication Ports, COM1 and COM2 . . . . . . . . . . . . . . . . . . . . . . . . 9
3.5 RelayContactsConnector................................. 10
3.6 Standard Input/Output Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.7 OptionBoardLocation................................... 10
4.1 Antenna Assembly for Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2 AntennaMountingBracket ................................ 13
4.3 AntennawithMountingKit................................ 13
4.4 GNSSSurgeArrester.................................... 15
5.1 Main board and Jumper Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.1 Utility Software, Opening Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.2 ConnectingwiththeClock................................. 34
7.3 Reading the Clock Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7.4 InitiatingtheLearnMode................................. 36
7.5 StatusScreen........................................ 37
7.6 Performance Display Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
7.7 FaultDisplayScreen.................................... 39
7.8 VersionDisplayScreen................................... 40
7.9 Communication Settings Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
7.10TimeAdjustmentScreen.................................. 42
7.11 IRIG-B Adjustment Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.12 Programmable Pulse Setup Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
7.13 Programmable Pulse Seconds Per Pulse Screen . . . . . . . . . . . . . . . . . . . . . 45
7.14 Programmable Pulse, Pulse Per Hour Screen . . . . . . . . . . . . . . . . . . . . . . 45
7.15 Programmable Pulse, Pulse Per Day Screen . . . . . . . . . . . . . . . . . . . . . . . 46

LIST OF FIGURES xv
7.16 Programmable Pulse, Single Trigger Screen . . . . . . . . . . . . . . . . . . . . . . . 46
7.17MiscellaneousScreen.................................... 48
7.18 Option Board Configuration Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
7.19 Security Configuration Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
7.20 Uploading a Configuration File to another clock . . . . . . . . . . . . . . . . . . . . . 51
7.21 Clearing Events in the clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7.22 Starting the Upload Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
7.23UploadingFirmware .................................... 53
8.1 Keypad ........................................... 56
8.2 MainRS-232Setup..................................... 59
8.3 LocalHourSetup...................................... 60
8.4 Auto Daylight Saving Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.5 Out-of-LockSetup ..................................... 62
8.6 RelaySetup......................................... 63
8.7 BackLightSetup...................................... 64
8.8 SystemDelaySetup .................................... 64
8.9 ProgrammablePulseSetup ................................ 65
8.10Seconds-Per-PulseSetup.................................. 66
8.11Pulse-Per-HourSetup ................................... 67
8.12Pulse-Per-DaySetup.................................... 68
8.13Seconds–Per–PulseSetup ................................. 69
8.14SingleTriggerSetup .................................... 70
8.15SlowCodeSetup ...................................... 71
8.16DCF77Setup........................................ 71
8.17IRIG-BTimeDataSetup ................................. 72
8.18 Event/Deviation Mode Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
8.19OptionControlSetup ................................... 73
8.20OptionControlSetup ................................... 73
9.1 Rear Panel Descriptions, optional outputs may be shown . . . . . . . . . . . . . . . . 75
9.2 IRIG-BWaveforms..................................... 77
9.3 DCF77TimingDiagram.................................. 79
10.1SwitchingPower ...................................... 83
10.2SwitchingPower ...................................... 84
A.1 GNSSSurgeArrester....................................115
A.2 Suggested Mounting of the GNSS Surge Arrester . . . . . . . . . . . . . . . . . . . . 117
B.1 Universal Power Supply Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
B.2 Low DC: Power Supply Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
B.3 JumperConfiguration ...................................122
B.4 JumperLocations .....................................125
B.5 8 High Drive Outputs Jumper Locations . . . . . . . . . . . . . . . . . . . . . . . . . 127
B.6 OptionJumperLocations .................................142
B.7 Option Connector −SignalLocations ..........................143

xvi LIST OF FIGURES
B.8 StartupPage ........................................149
B.9 SystemConfigurePage...................................150
B.10ConfigureHTTPS .....................................151
B.11 Configure System Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
B.12 Update System Firmware Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
B.13RebootingtheSystem ...................................152
B.14CheckingNetworkStatus .................................153
B.15 Configure Network Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
B.16 Configure VLAN Network Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
B.17ViewOperation.......................................155
B.18ViewSNMPOperation...................................155
B.19SNMPConfigurationPage.................................156
B.20PTPStatusPage......................................157
B.21PTPConfigurationPage..................................158
B.22NTPStatusPage......................................160
B.23NTPConfigurePage....................................161
B.24NTPAuthenticationPage.................................162
B.25 Contact and Version Information Pages . . . . . . . . . . . . . . . . . . . . . . . . . 163
B.26 SSH Console Interface: Startup Screen . . . . . . . . . . . . . . . . . . . . . . . . . . 164
B.27 System Configure Page Using SSH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
B.28 Configure System Password Using SSH . . . . . . . . . . . . . . . . . . . . . . . . . . 166
B.29 Update Operating System Using SSH . . . . . . . . . . . . . . . . . . . . . . . . . . 167
B.30 Checking Network Status Using SSH . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
B.31 Configure Network Settings Using SSH . . . . . . . . . . . . . . . . . . . . . . . . . . 169
B.32 View Operation Using SSH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
B.33 View SNMP Operation Using SSH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
B.34 PTP Status Page Using SSH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
B.35 NTP Status Page Using SSH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
B.36 NTP Configure Page Using SSH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
B.37 NTP Authentication Page Using SSH . . . . . . . . . . . . . . . . . . . . . . . . . . 173
B.38 Contact and Version Information Pages Using SSH . . . . . . . . . . . . . . . . . . . 174
B.39 Four BNC Connectors, Rear-Panel Layout . . . . . . . . . . . . . . . . . . . . . . . . 188

List of Tables
3.1 FuseChart ......................................... 8
4.1 Antenna Mounting Bracket Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2 GNSS Cable Data and Accessory Information . . . . . . . . . . . . . . . . . . . . . . 16
5.1 Main Board Output Signal Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.2 Unmodulated IRIG-B Jumper Table . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.3 1PPSJumperTable.................................... 20
5.4 Programmable Pulse Jumper Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.5 Analog Signal Jumper Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.6 EventInputJumperTable................................. 21
5.7 SPDTRelayJumperTable ................................ 22
5.8 Unmodulated IRIG-B Jumper Table . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.1 ListofFaultsandAlarms ................................. 25
7.1 Security Levels and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.2 SerialCablePinOut.................................... 34
7.3 Option Board Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
8.1 Menu Structure – Upper Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
8.2 Front-Panel Setup Menu Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
8.3 DefaultClockSettings................................... 57
9.1 DriveCurrentvs.Voltage ................................. 75
9.2 IRIG-B Time Code Types Available . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
10.1Specifications ........................................ 83
10.2Specifications ........................................ 84
11.1 Status Indications and Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
11.2 Fault Indications and Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
11.3 Holdover Oscillator (HO) Faults and Definitions Model 1201B/C Only . . . . . . . . 89
11.4UnlockedTimeQuality .................................. 95
11.5OptionControlSettings ..................................101
11.6 Characters used with Custom Strings . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
11.7 List of Possible Time Quality Levels, Ordinal 01 . . . . . . . . . . . . . . . . . . . . 104
11.8 List of True Time Quality Levels, Ordinal 02 . . . . . . . . . . . . . . . . . . . . . . 104

xviii LIST OF TABLES
11.9 Short Table of ASCII Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
12.1RelaySpecifications ....................................111
12.2 COM1, RS-232 Port Pin Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
12.3 COM2, RS-232 Port Pin Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
12.4AnnunciatorLEDs .....................................113
12.5 Clock and Antenna Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
12.6 Clock and Shipping Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
B.1 Four Configurable Outputs – Signal Choices . . . . . . . . . . . . . . . . . . . . . . . 123
B.2 Four Fiber Optic Output Configuration . . . . . . . . . . . . . . . . . . . . . . . . . 124
B.3 Example, Output Load and Loop Distance Matrix . . . . . . . . . . . . . . . . . . . 128
B.4 B2 Broadcast, Time Deviation Values . . . . . . . . . . . . . . . . . . . . . . . . . . 135
B.5 Output Connectors and Setup Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . 141
B.6 Null-Modem Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
B.7 NTP/PTP Server LED Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
B.8 PTPMessageIntervals...................................159
B.9 Partial List of POSIX Time Zone Strings . . . . . . . . . . . . . . . . . . . . . . . . 187

Chapter 1
Getting Started
1.1 Model 1200B and 1201B/C Common Features
The foundation of these clocks is the GNSS receiver. It is capable of tracking the USA GPS, Russian
GLONASS, European Galileo, and the Chinese Beidou constellations. In standard configuration,
there are three terminal block outputs capable of providing unmodulated IRIG-B, modulated IRIG-
B, 1 PPS, and Programmable Pulse. The clocks have substantial drive capability to supply timing
to multiple loads in parallel.
Available options include redundant power supplies and auxiliary option boards that provide
additional output signals and drive. See Appendix B for option board information.
Any of the standard I/O connectors may be configured for event capture, or the COM1 RS-232
port may be used for timing the arrival of data. The event timing has 100 nanosecond resolution,
and the clock sequentially records up to fifty events internally.
1.2 Model 1201B/C Advantages
The Arbiter Systems Model 1201B/C provides the utmost in timing accuracy, stability, and
protection from communication attacks and false GNSS signals. First in a new series of synchronized
secure clocks by Arbiter Systems offering an ultra-stable, crystal holdover oscillator, the Model
1201B/C can provide the highest level of timing stability in the presence of a false GNSS signal, or
from losing the GNSS reception.
The Model 1201B/C is more accurate at 100 ns whereas the Model 1200B accuracy is 200 ns.
The Model 1201B/C also benefits from the addition of ultra-stable oscillators with guaranteed
holdover capability. The standard holdover oscillator has a drift rate of less than 1 ms/day.
The addition of the holdover oscillator allows the Model 1201B/C to incorporate “EPS”
technology, for Enhanced Performance and Security. Three components used provide for secure
clock operation include: (1) encryption protection for secure connections, (2) GNSS anti-spoof
shielding, and (3) intelligent holdover capability.
A strategic component providing the highest level of anti-spoofing of the GNSS is a new
multiphase detection GNSS antenna. With this antenna the clock will be able to accurately track
the active satellites and detect false GNSS (spoofed) signals.

2 Getting Started
1.3 Standard Accessories
Components and accessories shipped with the clock are listed below. A pdf version of the operation
manual may be downloaded from the Arbiter website.
 GNSS Synchronized Clock
 Choice of internal power supply
 Antenna Cable, 15 m (50 ft) with connectors
 GNSS Antenna
 Rack-mount ears with hardware, attached
 Quick Setup Guide
 Utility software – free download from www.arbiter.com
1.4 Handling Precautions
Mechanical Shock The GNSS antenna may be damaged if dropped. Use care when handling.
Static Discharge The clocks are electronic devices and use static-sensitive components in their
operation. Use care to minimize static discharges, especially when the cover is removed.
1.5 Unpacking and Locating Accessories
For shipping, the clock and included accessories are packaged in a carton with the clock held down
with a piece of plastic wrap and accessories below it. See Figure 1.1.
1. Carefully grip points A and B and pull up. As the clock packaging expands outward, the
plastic wrap loosens so you can remove the clock.
2. Some of the accessories (i.e. antenna, antenna cable and rack-mount ears) are located below
the clock in separate compartments.
3. Handle the GNSS antenna carefully, as it may be damaged if dropped.
Figure 1.1: Packaging of Accessories