Masterclock GMR1000 User manual

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MasterclockGMRUserManualv2–2016.12
1
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MASTERCLOCK,INC.
GMR1000ANDGMR5000
USERMANUAL
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STANDALONE
GMR1000
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
(OPTIONALFEATURESSHOWN)
RACKMOUNT
GMR5000
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
(OPTIONALFEATURESSHOWN)
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MasterclockGMRUserManualv2–2016.12
2
TableofContents
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DISCLAIMER...........................................................................................3
DATASHEETS.........................................................................................4
INTRODUCTION.....................................................................................10
STANDARDFEATURES...........................................................................11
OPTIONALFEATURES............................................................................12
BACKPANELINTERFACES......................................................................15
CONFIGURATIONOPTIONS....................................................................16
PASSWORDPROTECTION......................................................................16
UTCTIMEREFERENCE............................................................................16
DHCPAUTO‐CONFIGURATION...............................................................17
FACTORYDEFAULTS..............................................................................18
DRIVERINSTALLATION..........................................................................19
QUICKSTARTINSTRUCTIONS.................................................................20
FRONTPANEL‘LED’STATUS..................................................................21
WINDISCOVERYINSTALLATIONANDSTANDARDOPERATIONS..............22
DEVICESETTINGS.................................................................................23
NETWORKCONFIGURATION................................................................24
INPUTCONTROL...................................................................................24
OUTPUTCONTROL...............................................................................29
DEVICESETTINGS>DISPLAYPROPERTIES............................................33
COMMUNICATIONSCONTROL.............................................................33
DAYLIGHTSAVINGTIME.......................................................................34
TIMEZONE/TIMEOFFSET.....................................................................34
RELAYCONTROL...................................................................................34
ADMINISTRATIVEFUNCTIONS..............................................................35
SETTIME/DATE.....................................................................................35
SETPASSWORD....................................................................................35
GLOBALPASSWORD.............................................................................36
RESETDEVICE.......................................................................................36
INSTALLNEWOPTION..........................................................................36
LEAPSECONDDATE..............................................................................36
EMAILCONFIGURATION(SMTP)..........................................................36
SETTODEFAULTCONFIGURATION......................................................36
STATUS.................................................................................................37
PROPERTIES..........................................................................................38
USINGTELNET.......................................................................................39
USINGSSH–SECURESHELL...................................................................40
TELNETANDSSHDEFAULTS...................................................................41
SNMP–SIMPLENETWORKMANAGEMENTPROTOCOL.........................46
TheGMR1000andGMR5000arehigh‐
precisiontimeandfrequencyreference
devices.Theyservetheneedsof
commercialestablishments,industry,
militaryandlaboratoryenvironments.
NTP,GPS,NMEA,NENA,TimeCode,10
MHZ,IEEE1588PTP,PPS,PPO,andhigh‐
stabilityoscillatoroptionsareavailable.
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ThankyouforyourpurchaseofaGMR
precisiontimeandfrequencyreference
systemfromMasterclock.

Hereyou’llfindinstructionsfor
unpackingandinstallingyourGMR,
propercareandconfiguration.

Weareheretohelp.Youcanreachus
usingvariouscontactmethods(phone,
email,etc.)foundatourwebsite:
www.masterclock.com

Beforecalling,pleaseattempttofindthe
answertoyoursituationhere.You’llfind
thisusermanualwillhandlevirtuallyallof
yourquestions.

Caution:Nouser‐serviceablepartsare
insidetheGMR.Pleasecontactthe
factoryifyourequireserviceorrepair.


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MasterclockGMRUserManualv2–2016.12
3
GPSOPTION..........................................................................................47
GPSANTENNALOCATIONANDINSTALLATION....................................48
GPSLOCKISSUESANDTROUBLESHOOTINGTIPS.................................51
STREAMINGGPSDATAUSINGPUTTY..................................................53
NMEAANDTHERS‐232INTERFACE.......................................................54
PRECISIONTIMEPROTOCOL(PTP–IEEE1588).......................................56
TROUBLESHOOTINGTIPS......................................................................63
WARRANTY...........................................................................................68
DECLARATIONSOFCONFORMITY..........................................................69
CERTIFICATESOFVOLATILITY................................................................71
CONTACTUS.........................................................................................73
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Disclaimer
Theinformationcontainedinthisdocumentissubjecttochangewithoutnotice.Masterclock,Inc.(hereinafterMC)
makesnowarrantyofanykindwithregardtothismaterial,including,butnotlimitedto,theimpliedwarrantiesof
merchantabilityandfitnessforaparticularpurpose.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.
Seeimportantlimitedwarrantyinformationattheendofthisdocument.
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GPS/GLONASSSATELLITESYSTEMS
DependingonmanyfactorsbeyondthecontrolofMasterclock,thesignalsthatarereceivedfromtheGPS
satellitesaresubjecttointerference,fading,satellitefailureandotherinfluencesthatcouldcausethedeviceto
provideerroneoustimeand/ordateinformationand,undersomeconditions,couldpreventitfromproviding
time/dateinformation.
Itistheresponsibilityoftheusertodeterminetheadequacyandsuitabilityofthisdevicefortheintendeduse.
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TIMECODEINPUT
DependingonmanyfactorsbeyondthecontrolofMasterclock,thesignalsthatarereceivedfromtheTimeCode
InputSourcearesubjecttointerference,noise,loadingeffectsandotherinfluencessuchastimecodeformatthat
couldcausetheTimeCodeReadertoprovideerroneoustimeand/ordateinformationand,undersome
conditions,couldpreventitfromprovidingtime/dateinformation.
Itistheresponsibilityoftheusertodeterminetheadequacyandsuitabilityofthisdevicefortheintendeduse.
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OPERATINGENVIRONMENT
Moisture
TheGMRisnotmoisture‐proof.Itisdesignedforindooruseonly.Treatitasyouwouldanyotherdelicate
electronicdeviceanddonotexposeittowater,highhumidityexcessiveheatorphysicalabuse.

Static
Donotsubjecttheunit,particularlytheantennainputconnector,toelectrostaticdischarge(ESD)duringhandling.
Dischargeyourselftoagroundbeforehandlingtheunit.Preferably,useastaticdischargewriststrapconnectedto
earthgroundwheninstallingorconfiguringthedevice.

Caution:Nouser‐serviceablepartsareinsidetheGMR.PleasecontactMasterclockSupportif
yourequireserviceorrepairbyemailing[email protected]orcalling(636)724‐3666.


The GMR1000 is a compact time and frequency generator/server that can reference
a variety of timing sources and provide a range of outputs to meet customer needs.
The base model includes both NTP client and server functionality compatible within
IPv4/IPv6 networks and oering Secure-Socket-Host (SSH) encrpyption for secure
communications. Properly congured and using standard NTP polling rates, the device
can support and synchronize hundreds of thousands of NTP clients.
FEATURES
Standard Inputs/Reference Sources
> NTP client via RJ45 10/100 Mb Ethernet
> NMEA 0183 via RS232/422 or USB
> NENA format 0,1,8 via RS232/422 or USB
> Internal high-stabilityTCXO oscillator ± 3 sec./year
> Conguration via USB or Ethernet
Input Options
> GPS or GPS/GLONASS receiver
> Time codes: IRIG-B0 (DCLS), IRIG-B1 (AM), IRIG-A0 (DCLS), IRIG-A1 (AM),
IRIG-E0 (DCLS), IRIG-E1 (AM), SMPTE 12M, 309M, 24/25/30 fps
and 29.97 drop frame
> Internal high-stability OCXO oscillator ± 0.25 sec/year
> VITC input
> Synchronizing signals: PPS, PPM, PPH
> IEEE 1588 PrecisionTime Protocol
Standard Outputs
> NTP server with 10/100 Mb Ethernet
> NMEA 0183 via RS232/422 or USB
> NENA format 0,1,8 via RS232/422 or USB
Output Options
> Time codes: IRIG-B0 (DCLS), IRIG-B1 (AM), IRIG-A0 (DCLS), IRIG-A1 (AM),
IRIG-E0 (DCLS), IRIG-E1 (AM), SMPTE 12M, 309M, 24/25/30 fps
and 29.97 drop frame
> 5V at 20mA Pulse Per Second (PPS)
> Programmable Pulse Output (PPO)
> 10MHz sine wave
> IEEE 1588 PrecisionTime Protocol
Other Features
> InternalTXCO maintains time during loss of external sync within ± 3 seconds/year
> WinDiscovery conguration software included
> Fully congurable osets for time zone and DST
> Programmable relay closure - one event per day with NO/NC dry contact relay
> Relay alerts loss of sync by default
> Telnet/SSH communication
> SNMP with custom MIB
> IPv4/IPv6 compatible
Other Options
> DB9 breakout adapter
> Six-digit display
> DIN rail mount available
Power, Physical Dimensions, Operating Parameters
> DC input (9-28 VDC)
> Includes external 12VDC wall mount power supply with locking DC plug
> Size: 6.44 x 4.06 x 1.44 in (16.35 x 10.32 x 3.65 cm),Weight: 16 oz (453.6 g)
> Temperature: 0 to 60°C
> Humidity: Up to 90% (non-condensing)
Compliance
> FCC, ROHS, CE Marked, ANSI
MASTERCLOCK, INC. 5-YEAR LIMITED PARTS & LABOR WARRANTY MADE IN THE USA
phone (USA and Canada): phone (international): email: online:
1-800-940-2248 [phone] [email protected] www.masterclock.com
Multi-Functional Master Clocks
GMR1000
Rack mountable with RM4

MASTERCLOCK, INC. 5-YEAR LIMITED PARTS & LABOR WARRANTY MADE IN THE USA
phone (USA and Canada): phone (international): email: online:
1-800-940-2248 [phone] [email protected] www.masterclock.com
The GMR5000 is a 1U rack mount time and frequency generator/server that can reference a variety of timing sources and provide a
range of outputs to meet customer needs. The base model includes both NTP client and server functionality compatible with IPv4/IPv6
networks and oering Secure-Socket-Host (SSH) encryption for secure communications. Properly congured and using standard NTP
polling rates, the device can support and synchronize thousands of simultaneous NTP clients.
FEATURES
Standard Inputs
> NTP client via RJ45 10/100 Mb Ethernet (dual-port)
> NMEA 0183 via RS232/422 or USB
> NENA format 0,1,8 via RS232/422 or USB
> Internal high-stabilityTCXO oscillator ± 3 sec./year
> Conguration via USB or Ethernet
Input Options
> GPS or GPS/GLONASS receiver
> Time codes: IRIG-B0 (DCLS), IRIG-B1 (AM), IRIG-A0 (DCLS), IRIG-A1 (AM),
IRIG-E0 (DCLS), IRIG-E1 (AM), SMPTE 12M, 309M, 24/25/30 fps
and 29.97 drop frame
> High-Stability Oscillator Options:
- Internal high-stability OCXO oscillator ± 0.25 sec/year
- Rubidium Oscilator ±1 mS/year
> Synchronizing pulses: PPS (second), PPM (minute), PPH (hour)
> 10 MHZ Input (CMOS or Sinusoidal)
> VITC input
> Optical Fiber LAN
> IEEE 1588 PrecisionTime Protocol
Power, Physical Dimensions, Operating Parameters
> Universal AC input
> Size: 18.9w x 1.750h x 5.174d in (48w x 4.445h x 13.14d cm)
> Weight: 2.6 lb (1.2 kg)
> Temperature: 0 to 60°C
> Humidity: Up to 90% (non-condensing)
> Available with 1RU rack mount
Multi-Functional Master Clocks
GMR5000
Standard Outputs
> NTP server via RJ45 10/100 Mb Ethernet (dual-port)
> NMEA 0183 via RS232/422 or USB
> NENA format 0,1,8 via RS232/422 or USB
> Kinemetrics/Truetime serial protocol
> 5V at 100mA Pulse Per Second (PPS)
Output Options
> Time codes: IRIG-B0 (DCLS), IRIG-B1 (AM), IRIG-A0 (DCLS), IRIG-A1 (AM),
IRIG-E0 (DCLS), IRIG-E1 (AM), SMPTE 12M, 309M, 24/25/30 fps
and 29.97 drop frame
> 5V at 100mA Programmable Pulse Output (PPO)
> Optical Fiber LAN
> 10 MHZ Output (Sinusoidal)
> IEEE 1588 PrecisionTime Protocol
Other Features
> 13-Digit display (Date/Time or Day of year/Time)
> Programmable relay closure - one event per day with NO/NC dry contact relay
> Relay alerts loss of sync by default
> WinDiscovery conguration software included
> Fully congurable osets for time zone and DST
> Telnet/SSH communication
> IPv4/IPv6 compatible
> SNMP with custom MIB
Compliance
> FCC, CE Marked, ROHS, ANSI

NTP Driven Clocks
NTDS16
FEATURES
> Stratum 1 synchronization via satellite constellations
> Receive time signals from up to 24 satellites
> Accurate reference to within ± 15 ns of UTC
> PPS on-time output is locked to the top of each second
> NMEA-0183 messages on serial port output
> Provides most accurate external time source for GMR devices
> Compact antenna designs for portable applications
> Optional magnetic-mount or standard-mount antennas
> Antenna cable lengths up to 500 ft (152 m) available
> In-line surge arrestors and in-line GPS ampliers available
MASTERCLOCK, INC. 5-YEAR LIMITED PARTS & LABOR WARRANTY MADE IN THE USA
phone (USA and Canada): phone (international): email: online:
1-800-940-2248 [phone] [email protected] www.masterclock.com
GMR Series Options
GPS and GPS+GLONASS
GPS Option GPS+GNSS Option
Satellites 12-channel, up to 12 satellites
simultaneously, parallel
32-channel, up to 24 satellites
simultaneously, parallel
Frequency L1, 1575 MHz L1, 1575 MHz and
1598-1606 MHz
Antenna Connector SMA female SMA female
RF Bias to Antenna 5V DC, center pin 5V DC, center pin
PPS 50 ms,TTL level,
on-time leading edge
50 ms,TTL level,
on-time leading edge
Accuracy ±60 ns of UTC ±15 ns of UTC
RECEIVER OPTIONS
Basic Antenna Standard Antenna High-Gain Antenna
Type Active, External Active, External Active, External
Gain 28 ± 2 dB 28 ± 2 dB 40 ± 4 dB
Mount Magnet/Adhesive
Outdoor, threaded pipe/mast.
M24 x 1.5 internal thread -
Mounting kit provided
Metal mounting kit provided,
per user specications
Operating Temp. -40° to 85°C
(up to 95% humidity)
-40° to 85°C
(up to 95% humidity)
-40° to 85°C
(up to 95% humidity)
Voltage 2.2-5V 3-5 V 3.3-9V
Polarization Right hand circular Right hand circular Right hand circular
Impedence 50 Ω 50 Ω 50 Ω
Connector SMA Female SMA Female SMA Female
Antenna Cable Belden 8219 or equivalent Belden 8219 or equivalent Belden 8219 or equivalent
Weight 0.9 oz (26 g) 6.7 oz (190 g) 9.6 oz ( 272 g)
Dimensions 1.5 x 1.9 x .59 in
(39 x 49 x 15mm)
3.7dia x 5.5h in
(9.3dia x 14h cm)
3.2dia x 5.0h in
(8.1dia x 12.6h cm)
ANTENNA OPTIONS
The GPS and GPS+GLONASS receiver options for the GMR Series of master clocks provide precision time reference based on satellite
broadcasts, achieving Stratum 1 synchronization. PPS on-time output is locked to the top of each second. Three antenna options are
available for both standard and mobile applications.
Standard Antenna
Basic Antenna
High-Gain Antenna

NTP Driven Clocks
NTDS16
MASTERCLOCK, INC. 5-YEAR LIMITED PARTS & LABOR WARRANTY MADE IN THE USA
phone (USA and Canada): phone (international): email: online:
1-800-940-2248 [phone] [email protected] www.masterclock.com
GMR Series Options
High Stability Oscillators
Freq. = 10 MHz HSO-1 HSO-2 HSO-3
Oscillator Type TCXO OXCO Rubidium
Freq. Stability - Aging/Day ≤ ± 0.0027ppm
(or 2.7E-9/day) ≤ ±1E-9/day ±4E-11/day
Freq. Stability - Aging/Year ≤ ± 1.0 ppm
(or 1E-6 /year) ≤ ±1E-7/year ±1.5E-9/year
Power Consumption ≤0.021W ≤3.5W warm up,
≤1.5W steady state
≤14W warm up,
≤ 8W steady state
ROHS Compliant Yes Yes Yes
Short Term Stability
(Allan Variance), t =1sec. - - ≤5E-11
Time Drift per Year (max) ± 3 sec./year ± 0.25 sec./year ± .001 sec. / year
Phase Noise
(dBc/Hz) @ 10
MHz
1 Hz - - ≤-65 dBc/Hz
10 Hz - ≤-110 dBc/Hz ≤-85 dBc/Hz
100 Hz ≤-135 dBc/Hz ≤-130 dBc/Hz ≤-112 dBc/Hz
1k Hz ≤-135 dBc/Hz ≤-145 dBc/Hz ≤-130 dBc/Hz
10k Hz ≤-148 dBc/Hz ≤-155 dBc/Hz ≤-140 dBc/Hz
Available only in GMR5000
Standard
Masterclock oers three high-stability oscillator options for the GMR Series.When locked to GPS, the OCXO 10 MHz sine wave frequency
will have the same long-term stability as an atomic clock.When not tied to GPS, a precision frequency 10 MHz reference output is
available as a source for laboratory use or for an RF reference, including cellular applications.The HSO option is required for all
10 MHz signal outputs.

NTP Driven Clocks
NTDS16
MASTERCLOCK, INC. 5-YEAR LIMITED PARTS & LABOR WARRANTY MADE IN THE USA
phone (USA and Canada): phone (international): email: online:
1-800-940-2248 [phone] [email protected] www.masterclock.com
GMR Series Options
Time Code Reader
SMPTE 12M IRIG-B0
(DCLS, PWM) IRIG-B1 (AM) IRIG-A (DCLS) IRIG-A (AM) IRIG-E (DCLS) IRIG-E (AM)
Rate 24, 25, 30 fps NDF
and 29.97 DF 1kHz, 1mS 1kHz, 1mS 10kHz, 0.1mS 10kHz, 0.1mS 100Hz, 10mS 100Hz, 10mS
Input Level Range 0.2-18Vpp
(2Vpp nom)
0.5-12Vp
(5Vpp nom)
0.5-8Vpp
(5Vpp nom)
0.5-12Vp
(5Vp nom)
0.5-8Vpp
(5Vpp nom)
0.5-12Vp
(5Vp nom)
0.5-8Vpp
(5Vpp nom)
Input Impedance kΩ >10 kΩ >10 kΩ
Mark to Space Ratio N/A N/A 3.3:1 N/A 3.3:1 N/A 3.3:1
Automatic Gain Adjust Over input level range
Number of Inputs
(SE: Single Ended - Unbalanced,
Dierential - Balanced)
1 SE, 1 DIFF 1 SE, 1 DIFF 1 SE, 1 DIFF 1 SE, 1 DIFF 1 SE, 1 DIFF 1 SE, 1 DIFF 1 SE, 1 DIFF
Type NDF DCLS AM 1kHz DCLS AM 10kHz DCLS AM 100Hz
Encoding
None,
Leitch Date,
SMPTE 309M
None or IEEE 1344 year or IRIG STD 200-04
IRIG Coded
Expression
IRIG STD
200-04
0 BCDTOY, CF, SBS N/A B000 B120 A000 A130 E000 E110
1 BCDTOY, CF N/A B001 B121 A001 A131 E001 E111
2 BCDTOY N/A B002 B122 A002 A132 E002 E112
3 BCDTOY, SBS N/A B003 B123 A003 A133 E003 E113
4 BCDTOY, BCDYEAR, CF,
SBS (IEEE-1344 -
1995 Encoding)
N/A B004 B124 A004 A134 E004 E114
5 BCDTOY,BCDYEAR, CF N/A B005 B125 A005 A135 E005 E115
6 BCDTOY,BCDYEAR N/A B006 B126 A006 A136 E006 E116
7 BCDTOY,BCDYEAR, SBS N/A B007 B127 A007 A137 E007 E117
The Time Code Reader option for the GMR Series automatically detects and locks to incoming time code using an automatic gain
control circuit, reading and synchronizing to SMPTE or IRIG-B time code, as well as IRIG-A and IRIG-E waveforms.

NTP Driven Clocks
NTDS16
MASTERCLOCK, INC. 5-YEAR LIMITED PARTS & LABOR WARRANTY MADE IN THE USA
phone (USA and Canada): phone (international): email: online:
1-800-940-2248 [phone] [email protected] www.masterclock.com
GMR Series Options
Time Code Generator
SMPTE 12M IRIG-B0
(DCLS, PWM) IRIG-B1 (AM) IRIG-A (DCLS) IRIG-A (AM) IRIG-E (DCLS) IRIG-E (AM)
Rate 24, 25, 30 fps NDF
and 29.97 DF 1kHz, 1mS 1kHz, 1mS 10kHz, 0.1mS 10kHz, 0.1mS 100Hz, 10mS 100Hz, 10mS
Output Level @ 50 Ω 4Vpp
(16 dBm)
5Vp
(25 dBm)
5Vpp
(18 dBm)
5Vp
(25 dBm)
5Vpp
(18 dBm)
5Vp
(25 dBm)
5Vpp
(18 dBm5
Mark to Space Ratio N/A N/A 3.3:1 N/A 3.3:1 N/A 3.3:1
Gain 1 1 1 1 1 1 1
Number of Inputs
(SE: Single Ended - Unbalanced,
Dierential - Balanced)
1 SE, 1 DIFF 1 SE, 1 DIFF 1 SE, 1 DIFF 1 SE, 1 DIFF 1 SE, 1 DIFF 1 SE, 1 DIFF 1 SE, 1 DIFF
Type NDF DCLS AM 1kHz DCLS AM 10kHz DCLS AM 100Hz
Encoding
None,
Leitch Date,
SMPTE 309M
None or IEEE 1344 year or IRIG STD 200-04
IRIG Coded
Expression
IRIG STD
200-04
0 BCDTOY, CF, SBS N/A B000 B120 A000 A130 E000 E110
1 BCDTOY, CF N/A B001 B121 A001 A131 E001 E111
2 BCDTOY N/A B002 B122 A002 A132 E002 E112
3 BCDTOY, SBS N/A B003 B123 A003 A133 E003 E113
4 BCDTOY, BCDYEAR, CF,
SBS (IEEE-1344 -
1995 Encoding)
N/A B004 B124 A004 A134 E004 E114
5 BCDTOY,BCDYEAR, CF N/A B005 B125 A005 A135 E005 E115
6 BCDTOY,BCDYEAR N/A B006 B126 A006 A136 E006 E116
7 BCDTOY,BCDYEAR, SBS N/A B007 B127 A007 A137 E007 E117
The Time Code Generator option for the GMR Series generates SMPTE or IRIG-B time codes, as well as IRIG-A and IRIG-E waveforms.
TheTCG option is software controlled and locks to GPS satellites,Time Code Reader, NTP Client, and/or High-Stability Oscillator.

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MasterclockGMRUserManualv2–2016.12
10
Introduction

GMR1000(OPTIONALFEATURESSHOWN)

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
GMR5000(OPTIONALFEATURESSHOWN)

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
TheGMR1000andGMR5000arehigh‐precision,smallprofile,multi‐functionreferencegeneratorsthatcan
operateonanEthernetorTimeCodenetwork,orasastandalonemasterclockreference.OnanEthernetnetwork,
thebuilt‐inNetworkTimeProtocol(NTP)clientaccuratelysetssystemtimefromoneortwoNTPservers.Fora
timecodesystem,atimecodereadersetssystemtimefromatimecodegenerator.
WhenequippedwithaGPSorGNSSreceivertheGMRcanlocktoGPSand/orGNSSsatelliteconstellations,
providingnear‐atomicclockprecision.TheGMRcanalsoreadNMEAandNENAmessagestosetitssystemtime,or
timecanbesetmanually,anditcangenerateNMEA,NENAorTruetime/Kinemetrics.Holdoveraccuracyand
stabilityismaintainedwithahigh‐stabilityTCXOoscillatorthatcanbeupgradedtoanOCXOorRubidiumoscillator
option.
OptionaloutputsincludeTimeCode(SMPTE,IRIG‐A,IRIG‐B,IRIG‐E),PPO(ProgrammablePulseOutput),PPS(Pulse
PerSecond),10MHzsinewave,andIEEE1588PreciseTimeProtocol.
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MasterclockGMRUserManualv2–2016.12
11
StandardFeatures

Customconfigurationstomeetapplicationrequirements(seeOptionalFeatures)
NTPserver/clientfunctionalitywithselectableStratumidentificationlevels(1‐15)
NTPserveraccuracy:±2milliseconds
ServethousandsofNTPclientsonanetwork
SupportsNTPbroadcast,multicast,and/orunicast(query)modesofoperation
UTCtimeinternalreference
‐11.5to+12hourtimezoneoffsetsin30‐minuteincrements
Automaticdaylightsaving(US&Canadatimestandard)
HighStabilityTemperatureControlledCrystalOscillator(TCXO)maintainstimeduringlossofexternalsync
within±3seconds/year
Non‐volatilememoryconfiguration
InternalRealTimeClock(RTC)backedbyamaintenance‐freerechargeablebatteryretainstimeduring
lossofpowerorlossofactivereference(s)forupto9monthswithholdoverstabilityof<165ms/day
FrontpanelLEDstatusindicators
R232(andRS422onGMR5000)serialportinterface
Kinemetrics/Truetimeoutput
NENA911PSAPmasterclockinput/output
NMEA0183ASCIIserialinput/output
ConfigurationandmonitoringviaWinDiscoverysoftwareorTelnet/SSH
USBserialportconfigurationinterface
Telnet/SSHinterfaceforalternateconfigurationandmaintenance
FullyconfigurablenetworksettingsviaDHCPorStaticIPaddressing
IPv4/IPv6compatible
Passwordprotectionandauthenticatedcommunications
MD5authentication
SNMP(SimpleNetworkManagementProtocol)withcustomMIB
SMTP(SimpleMailTransferProtocol)
Firmwareupgradeability
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MasterclockGMRUserManualv2–2016.12
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OptionalFeatures

YourGMRcanhavehardwaremoduleaccessoriesandmultipleadvancedfunctionoptions,installedupon
manufacture.ThesemaketheGMRanextremelyversatilenetworkdevicesuitableforalargevarietyof
applications.

GPS/GLONASS
•GPSorGPS/GLONASSreceiveroptionwithupto32‐channelreceiver,upto24satellites
•GPSReceiveraccuracy:±60nanosecond
•GPS/GLONASSReceiver:±25nanosecond
•PPSon‐timeoutputislockedtothetopofeachsecond(standardonGMR5000,optionalonGMR1000)
•NMEA‐0183messagesonserialportoutput

HSO:HIGHSTABILITYOSCILLATORS
StandardTemperatureControlledCrystalOscillator(TCXO)
OptionalOvenControlledCrystalOscillator(OCXO)provideshighstabilitytimereferenceof±0.25sec/year
driftwhilefreewheelingafterdiscipliningfromaGPSorotheraccuratereference
OptionalRubidiumoscillatorprovideshighstabilitytimereference±1mS/yeardriftwhilefreewheelingafter
discipliningfromaGPSorotheraccuratereference
Calibratestobest“active”timesource(useGPSorGPS/GLONASSoptionformaximumholdoverstability)

IEEE1588V2PRECISIONTIMEPROTOCOL
DefaultProfilePTPgrandmaster,slave,ortransparentclock
Peer‐to‐peerorend‐to‐endconfiguration
GrandMasterClockaccuracycomparedtotopofsecondofGPSreference:±100nanoseconds
SlaveclockaccuracycomparedtotopofsecondGrandMasterClockreference:±200nanoseconds

TCR:TIMECODEREADERMODULE
ReadsSMPTE24,25,30‐fpsnon‐dropframeandSMPTE29.97dropframe,IRIG‐B(AandEoptional)amplitude
modulatedandpulsewidthcoded(un‐modulated)
Automatictimecodedetectioncircuitwithautomaticgainadjust
Single‐endedunbalancedordifferentialbalancedinputs
DB9breakoutadapteravailablefordifferentialbalancedinput(GMR1000only,notneededonGMR5000)
Programmabledelayoffsetwith1µSresolution
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MasterclockGMRUserManualv2–2016.12
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TCG:TIMECODEGENERATORMODULE
ReadsSMPTE24,25,30‐fpsnon‐dropframeandSMPTE29.97dropframe,IRIG‐B(AandEoptional),
amplitudemodulatedandpulsewidthcoded(un‐modulated)
Timecodesignalaccuracy:200nanosecond
Single‐endedunbalancedordifferentialbalancedoutputs
DB9breakoutadapteravailablefordifferentialbalancedoutput(GMR1000only,notneededonGMR5000)
Programmabledelayoffsetwith1µSresolution

PPS(PULSEPERSECOND)OUTPUT
5VTTL(Transistor‐TransistorLogic)levelsignallockedtothemostaccuratetimereference
AccuracycomparedtotopofsecondofGPSreference:±70nanoseconds
RisingedgeofthePPSsignalprovidesthe“ontime”mark
StandardonGMR5000

PPO:PROGRAMMABLEPULSEOUTPUT
Pulseintervalanddurationcanbeselectedviasoftwarefrom100μsto3days
Pulseoutputis5Vppfromalowimpedancesource
Pulsewidthselectablefrom10μsecondsto100msec
Accuracyissameasthecurrentreferencesource(i.e.GPS,timecode,NTP,etc.)

10MHZSINEWAVEFREQUENCYINPUTANDOUPUT
9VPeaktoPeakunloadedat50Ohm,6VPeaktoPeakwithhighimpendenceloadat50Ohm

SYNC‐IN
•SynctoPPS,PPMorPPHinput

PROGRAMMABLEDRYCONTACTRELAY(24VDC,250MA)
Singleevent(daily)programmablerelayschedule
StandardonGMR5000
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MasterclockGMRUserManualv2–2016.12
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DRYCONTACTRELAYANDPROGRAMMABLERELAYEVENT
ACorDCrelaythatcanbeusedineitherNO(normallyopen)modebyconnectingtopins2and3ofJ9orNC
(normallyclosed)modebyconnectingtopins1and2ofJ9ontherearoftheunit.
Bydefault:Therelaywillactuatetoindicatewhentheunithaslostsynchronization(lock)withtheexternal
timereference.
Therelaycanbeprogrammedtoactuateatasingletime(definedasHH:MM:SSstarttime)foraspecified
duration(inseconds)onceperday.
StandardonGMR5000

FRONTPANELDISPLAY
Six‐digitfrontpanelLEDdisplaymaybeorderedwithyourGMR1000toprovidethetime/datedisplay.
Athirteen‐digitLEDdisplayisstandardontheGMR5000.

Caution:Nouser‐serviceablepartsareinsidetheGMR.PleasecontactMasterclockSupportif
yourequireserviceorrepairbyemailing[email protected]orcalling(636)724‐3666.
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MasterclockGMRUserManualv2–2016.12
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StandardI/Oconnectionsusingoptional
DB9BreakoutAdapter(GMR1000only)

1‐TC‐OUT(NEG)*
2‐RS232RX(DTE)TX(DCE)**
3‐RS232TX(DTE)RX(DCE)**
4‐RELAYCOMMON*
5‐GND
6‐TC‐OUT(POS)*
7‐TC‐IN(POS)*
8‐TC‐IN(NEG)*
9‐RELAYIN/OUT*

*ifinstalled
**basedoninternaljumpersetting
BackPanelInterfaces

ETHERNETRJ4510/100MBPORT
TheGMR1000includes1EthernetRJ4510/100MBport;theGMR5000includes2ports.Theseportsareusedfor
NTP,IEEE1588PTP,and/orconfigurationoveranetwork.

SMACONNECTORS
Dependingonorderedconfiguration,theGMR1000and5000willhaveoneormoreSMAconnectors.These
include:
10MHzInput
10MHzOutput
GPSAntenna
PPO(ProgrammablePulseOutput)
Sync‐In(PPS,PPM,orPPH)
PPSOut

BNCCONNECTORAND3‐PINTERMINALBLOCK
WitheachoftheTimeCodeGeneratorandTimeCodeReaderoptions,aBNCconnectoranda3‐pinterminalblock
isincluded:
BNCConnectorforbalancedtimecode
3‐PinTerminalBlockforsingle‐endedunbalancedtimecode

USBPORT
TheGMR1000andGMR5000bothincludeaUSBtypeBportforserialcommunicationsandconfiguration.

RS232SERIALPORTINTERFACE
TheGMR1000providesaDCERS‐232forserial
communicationsandconfiguration.
TheGMR5000providesaDTERS‐232andRS‐422,
forserialcommunicationsandconfiguration.
ThesecommunicationsincludeNENA911,NMEA
0183andKinemetrics/Truetime.
OntheGMR5000boththeRS‐232andtheRS‐422
canbeusedforoutputsimultaneously.
Forinput,onlyoneportcanbeusedatatime.
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MasterclockGMRUserManualv2–2016.12
16
ConfigurationOptions

WINDISCOVERY
IncludedwithyourGMRistheWinDiscoveryGUIapplication.WinDiscoveryisadetection,configurationand
managementsoftwareapplicationwhichworkswithallMasterclockbrandnetworkdevices.Itoperatesunder
mostWindows‐basedoperatingsystems.
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TELNETANDSECURESHELL(SSH)INTERFACES
Telnet,aterminal‐stylecommandlineinterface,isusedonnetworksthatarenotWindows‐based(i.e.Linuxand
UNIX).TheTelnetinterfacemaybedisabled.SecureShell(SSH)isacommandlineinterfacethatencryptsdata.
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CONFIGURATIONSAVEDVIABATTERY‐BACKEDRTC
TheGMRmaintainsitsinternaltimesettingsinbattery‐backedmemorylocatedonanRTC(RealTimeClock)chip,
whichprovidesfreewheelingaccuracy(maximumdrift)downto±165ms/day.Abuilt‐inbatterysuppliespower,
for6‐9months,totheRTCwhentheunitispoweredoff.Thisallowstheinternaltimetobemaintainedandthe
timeanddatetoincrementwheneverpowerisremoved.
Thebatteryisarechargeablemanganeselithiumtype.Abuilt‐inbatterychargingcircuitisusedwhentheunitis
normallypowered,eliminatingtheneedformaintenance.
PASSWORDPROTECTION
TheGMRisprovidedwithapasswordforsecurity.EachMasterclocknetworkdevicerequiresapasswordthat
mustbeenteredbeforethedevicewillacceptconfigurationchanges.Eachdevice,orsetofdevices,canhavea
uniquepasswordortheycanallsharethesameone.Thepasswordcanbechangedandretainedtopermitaccess
onlytoauthorizedusers.
Apasswordcanbeamaximumof11charactersandmaycontainanysequenceofletters,numbers,andcommon
punctuation.Passwordsarecase‐sensitive.
DEFAULTPASSWORD
Thefactorydefaultpasswordis“public”
UTCTIMEREFERENCE
TheGMR’sreferencetimeisbasedonUTC(CoordinatedUniversalTime).UTCisatimestandardwhichisthebasis
fortheworldwidesystemofciviltime.Thistimescaleiskeptbytimelaboratoriesaroundtheworld,includingthe
U.S.NavalObservatory,andisdeterminedusinghighlypreciseatomicclocks.TheUTCscaleiscoordinatedinParis
bytheInternationalBureauofWeightsandMeasures(BIPM).
UTCrunsattherateoftheatomicclocks,butwhenthedifferencebetweenthisatomictimeandonebasedonthe
Earthapproachesonesecond,aonesecondadjustment(a"leapsecond")ismadeinUTC.
UTCisthelocaltimeattheprimereferencemeridianatGreenwich,England.Atagivenlocationontheplanet,
localtimecanbedisplaced(referencedtoUTC)by‐11to+12hours.NorthandSouthAmericaarefrom‐3to‐11
hoursdelayed;mostofEuropeandAfricaandallofAsiaandAustraliaareadvancedby+1to+12hours.Because
theNTPtimedistributionstandardoperateswithUTC‐referencetimeonly,timezoneand/ordaylightsavings
(summer)timearenotused.UTCissometimescolloquiallyreferredtoas"GreenwichMeanTime"(abbreviated
GMT).




MasterclockGMRUserManualv2–2016.12
17
DHCPAuto‐Configuration

DHCP(DynamicHostConfigurationProtocol)isamechanismforautomatingtheconfigurationofnetworked
devicesthatuseTCP/IP.WhenDHCPisenabled,DHCPconfigurationacquisitionwilloverwriteanymanual
configurationitems.
TheGMRcanobtainitsnetworkconfigurationautomaticallyfromDHCP,whenoneortheotherisavailableonthe
network.UtilizingDHCP,theGMRwillautomaticallybeassigneditsnetworkconfiguration.ThisincludesanIP
addressandadditionalfunctions,suchasDNSserverandRouter/Gatewaysettings.Thisfeatureisenabledby
default.AGMRnetworkdevicewillnotfunctionproperlyifconfiguredtouseDHCPserviceswhennoDHCPserver
ispresentonthenetwork.IfnoDHCPserverispresent,thedevicewilluseafallbackIPaddress:169.254.xxx.yyy
wherexxxandyyyarethelasttwobytesoftheMACaddress.
TheGMRcanautomaticallyobtainTimeZoneOffsetconfigurationandtheNTPserveraddresses(primaryand
secondary).ToutilizethesefeaturestheDHCPserverofthenetworkmustbepre‐configuredwiththeappropriate
checklistitems.Factorydefault:DHCPenabled.
LongDHCPnamesarenotsupported.Onlythefirst14charactersofthedevicenamewillberegisteredbythe
DHCPserver.
TheIPaddressoftheunitisrequiredtoconfiguretheGMRwithSSHorTelnet.TheDHCPservercanbeutilizedto
providetheIPaddressoftheassociateddevicenamethatisregistered.
ThefollowingRFC2132‐definedoptionalconfigurationitemsare,whenavailable,usedbytheGMRfor
configuration:
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OptionNo.Comments
Router3ThefirstIPaddressprovidedwillbeusedforrouter/gateway
configuration.
DomainName
Server6UptotwoserverIPaddressesmaybespecified.GMRdevicewilltreat addressesasprimaryandsecondaryDNSservers.
NTPServer42SpecifiesanNTPserveravailabletotheclient.Ifmorethanoneislisted,
onlythefirstwillbeused.



MasterclockGMRUserManualv2–2016.12
18
FactoryDefaults

FACTORY‐DEFAULTCONFIGURATION
TheGMRisfullytestedwithfactorydefaultspriortoshipping.Thisfactorydefaultconfigurationisdefinedas:
•UTCreferencetime(nolocaltimezoneoffsetanddaylightsavingautoadjustmentisdisabled)
•DHCPconfigurationmode–enabledfornetworkaddressandNTPServeraddresses
•NTPserverenabled,NTPclientdisabled
•PTP(ifinstalled),End‐To‐Enddefaultprofile
•TimedisseminationviaReal‐TimeClock(RTC)duringreferenceoutagesenabledfor24hours
•DevicenamesettoGMR1000‐XX:XXorGMR5000‐XX:XX(whereXX:XXarethelasttwobits
oftheMACaddressoftheunit)
•RelaySchedule–disabled.Thedefaultrelayactionistocloseuponlossofexternaltimereference(lossof
lock).
•PasswordforWinDiscovery–public
•PasswordforTelnet–public(Telnetisdisabledbydefault.)
•SSHCredentials–user:publicpassword:publicpass

RESETTOFACTORYDEFAULTS
Insomesituations,(suchasalostpasswordorremovalofconfidentialinformation,perhapspriortosendingthe
unitinforrepairservice),itmaybenecessarytoreturntheGMRtoitsfactorydefaultconfiguration.Thefactory
defaultsmayberestoredbyusingsoftware(WinDiscovery,SSHorTelnet)orbyholdingdowntheresetbuttonon
thebackpanelofaGMR1000orthefrontofaGMR5000(seeillustrationatleft).Maintainpressureforatleast5
secondstoresettheunittofactorydefaults.
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SettoFactoryDefaultButton
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OntheGMR1000,arecessedbuttonlabeled“RESET”,
locatedonthebackoftheunitperformsthisfunction.
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OntheGMR5000,theresetbuttonislocatedbehindthe
pinholetotherightoftheUSBportonthefrontoftheunit.
Toresetconfigurationtofactorydefault:

1. Pressandholdthe“RESET”button.
2. Continuetopressthe“RESET”buttonuntilthe
unitreboots.



MasterclockGMRUserManualv2–2016.12
19
DriverInstallation

TheGMRisavailableinmultipleconfigurationstofitalmostanyneedwithconfigurablemodulesandsoftware
options.
AUSBtypeBporthasbeenincludedontherearoftheGMR1000andthefrontoftheGMR5000toprovidea
meansofconfiguringtheoperationviaWinDiscovery.Touseit,connectaUSBtypeA/Bcablefromthehost
computertotheGMR.
Beforetheunitcanbeconfigured,thedevicedriversmustbeloaded.Thesoftwareconfigurationprogram
WinDiscoveryandUSBdrivershavebeenprovidedonaCDwiththedevice.
InstallingUSBdrivers:PoweruptheGMR,inserttheWinDiscoveryCDintothePC,andcompleteitsinstallation.
ConnecttheGMRtothePCwithaUSBcable.TheWindowsPlugandPlayManagerwilldetecttheGMRand
requestdrivers.Selecttheoptionto“Installfromalistorspecificlocation[Advanced]”thenbrowsetothe
Driversfolderasdetailedontheleft.ThewizardwillinstallthemandthentheGMRcanbeaccessedvia
WinDiscovery.ThenexttimeyouconnectaMasterclockdeviceviaUSByouwillNOThavetoinstallthedrivers
again.

QUICKDRIVERINSTALLATION
TocontrolaGMRviaUSBcable,adrivermustbeinstalledonthePC.
1. PluginyourGMRtoinitiatestart‐up.
2. InsertWinDiscoveryCDthatshippedwithyourGMR.
3. Whenprompted,chooseto“RunSetup_WinDiscovery.exe”.
4. Ifnotprompted,right‐clicktheCDdriveandchooseOpenorExplore,thendouble‐click
Setup_WinDiscovery.exe.
5. Finishtheinstallation.
6. ConnectaUSBcablebetweenthePCandtheGMR.
7. Ifpromptedforadriver,navigatetoMasterclock\WinDiscovery4x\DriversinC:\ProgramFilesor
C:\ProgramFiles(x86)
8. OpenWinDiscoverybydouble‐clickingtheshortcutonthedesktop.
9. ClicktheDiscoverbutton.
10. Expandthe“KnownDevices”treeontheleft.
11. TheGMR’snameappearsinblue,indicatingthattheconnectionisviaUSB.
12. TheGMR’snameappearsingreen,indicatingthattheGMRhastheIPaddressof192.168.x.x
13. TheGMR’snameappearsinred,indicatingthattheGMRhasthefallbackIPaddressof
169.254.x.xwherex.xarethelasttwooctetsoftheMACaddress.



MasterclockGMRUserManualv2–2016.12
20
QuickStartInstructions

PRE‐INSTALLATIONCHECKLIST
TheGMRisavailableasanetworkdevicewithanNTPclientenabledandconfiguredforDHCPprovidednetwork
settingsandNTPserveraddresses(bydefault).Ofcourse,theusercanchangeandelaboratethesesettings.
BeforeinstallingaGMRonanetworkoneshouldbepreparedwithbasicconfigurationinformation(seeboxat
left).Youmayneedtoaskyournetworkadministratorforthis.
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QUICKSTARTINSTRUCTIONS
Makeallconnectionsattherearoftheunit,butkeepthepowerdisconnecteduntilthelaststep.
ConnecttheGMRdevicetoyourLAN(LocalAreaNetwork)hub/router/switchusingCat5cablemakingthe
connectiontotheRJ45connectorlabeledETHERNET
MakeanyadditionaldesiredinputandoutputconnectionstotheDB9connectorlabeledRS‐232usingeither
yourowncableoranoptionalDB9breakoutadapter(ontheGMR1000only).
InserttheWinDiscoveryCDintoacomputerrunningWindowsXP,7,8,or10(VistasupportedonlyinXP
compatibilitymode).TheInstallShieldapplicationwillbeginautomaticallyifAutoRunisenabledonyour
system.Otherwise,browsetotheCDrootdirectlyandclickthefileSetup_WinDiscovery.exetobeginthe
installer.
Applypower.ForaGMR5000connectthesuppliedACpowercordbetweenanACpowersourceandtheIEC
jackonthebackofthedevice.ForaGMR1000insertthesuppliedAC/DCpowersupplymoduleintoan
appropriateACpowersourceandtheDCpowerconnectorintothemaleSwitchcraft‐stylelockingpower
socketontherearoftheunitlabeledDCIN9‐28VDC.
IfdesiredtheGMR1000canbeoperatedfromanominal12‐VDCsupplysuchasabattery(9‐28VDCrange).
Caution:Observevoltagepolarityasindicatedontherearpanel.Thecenterpinispositive+VDC.
Monitorthefrontpanelforpowerupstatus.
WhenpowerisfirstappliedtheinitialsequenceofthefrontpanelLEDsare:
FrontpanelLOCKindicatorwillcomeonfor1second,goout,comeonfor1second,andgoout.
CHECKLIST
DynamicNetworkingConfiguration(defaultforallGMRdevices)
__ConfirmthataDHCPserviceisaccessibleonthelocalnetwork
__DetermineifDHCPserverwillprovideNTPserverconfiguration
__DetermineifDHCPserverwillprovidetimezoneconfiguration
‐‐OR‐‐
StaticNetworkingConfiguration
__IPaddressandnetmaskdesignationfordevice
__PrimaryandsecondaryDNS(domainname)servers
__Gateway/router
__PrimaryandsecondaryNTPtimesources