Summary of Contents for Pendulum GPS-12
- Page 1 GPS-12, GPS-12R, GPS-12R/HS & GPS-12RG GPS & GLONASS / GPS Frequency Standard User’s Manual...
- Page 2 4031 600 12001 Rev. 05 May 2017 © 2017 Pendulum Instruments / Altaria Services...
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Page 3: Table Of Contents
4 GPS-12 Monitor What is GPS-12 Monitor? ... 4-2 Requirements ....4-2 Versions . -
Page 4: General Information
Front Panel Design The picture illustrating the front panel in Chapter 3 shows the GPS-12, which is the latest addition to this product family, now consisting of three models. During a transition period the other models will be delivered with their present front panels. -
Page 5: Preface
Chapter 1 Preface... -
Page 6: Introduction
2.048/1.544 MHz square wave outputs and one The GPS-controlled frequency standards 1 pps pulse output with approx. 10 µs duration. GPS-12(R) and the GLONASS/GPS-con- The GPS-12RG has also 3 x 10 MHz and trolled frequency standard GPS-12RG deliver a 1 x 5 MHz outputs. See Option 70B below. - Page 7 Reference Oscillators ternal battery, which is kept charged by one of the external sources. The GPS-12 is equipped with an oven-con- trolled crystal oscillator (OCXO), the GPS-12R In case of a power line failure you will benefit has a standard rubidium oscillator, and the...
- Page 8 Preface This page is intentionally left blank.
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Page 9: Preparation For Use
Chapter 2 Preparation for Use... -
Page 10: Safety Instructions
The warranty commitments are rendered further operation. void if unauthorized access to the interior of – Inform your local Pendulum Service Center. the instrument has taken place during the For example, the instrument is likely to be un- given warranty period. -
Page 11: Unpacking
Also notify on the rear panel according to the list below. Up your local Pendulum sales or service office in to two output boards in any combination can be case repair or replacement may be required. -
Page 12: Installation
Send the frequency standard ium oscillator active in order to retain its to the local Pendulum Service Cen- long-term characteristics. Line voltage is al- ter. ways present on the primary side. -
Page 13: Orientation And Cooling
Preparation for Use Orientation and Fold-down Support Cooling For bench-top use, a fold-down support is available for use underneath the frequency The frequency standard can be operated in any standard. This support can also be used as a position desired. Make sure the air flow handle to carry the instrument. - Page 14 Preparation for Use – Remove the four feet from the cover. WARNING: Capacitors inside the in- Use a screwdriver as shown in the following il- strument can hold their charge lustration or a pair of pliers to remove the even if the instrument has been springs holding each foot, then push out the separated from all voltage sources.
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Page 15: Antenna Installation
SW pack- door mounting on a wall or preferably on a age GPS-12 Monitor. A suitable cable should roof. The more free sky that is visible from the have one USB-A connector (for the PC) and antenna’s position, the better the satellite con-... -
Page 16: Disposal Of Hazardous Material
Preparation for Use Disposal of Hazardous Material The basic instrument and all optional units ex- cept Option 78 and Option 78/HS have no bat- teries or other parts containing hazardous amounts of substances that require special at- tention or handling instructions. Option 78 and Option 78/HS contain a re- chargeable NiMH battery pack that serves the purpose of providing uninterruptible power to... -
Page 17: Using The Controls
Chapter 3 Using the Controls... -
Page 18: Front Panel
Front Panel LCD display with backlight forming the The CURSOR keys (with arrow symbols) User Interface (UI) together with the are used for moving the cursor, marked by CURSOR and ENTER keys to the right. text inversion, around the menus on the display. -
Page 19: Rear Panel
Using the Controls Rear Panel Antenna cable input Optional Fan with automatic Power input (N-contact) external DC speed control 90-265 V, power inputs 45-440 Hz GPS ANTENNA IN 2.048 MHz OUT 2.048 MHz OUT 2.048 Mbps OUT 2.048 Mbps OUT ALARM +12VDC -48VDC... -
Page 20: Functional Description
GPS Disciplined mode is the default mode. [GPS-12(R)] GLONASS/GPS Hold-over mode is automatically entered when [GPS-12RG] navigation satellite systems. The the disciplining fails for some reason (e.g. loss signals have very low long-term uncertainty of satellite contact). -
Page 21: Gnss Menu
Using the Controls • 1 pps Offset Manual Hold-over (GPS12R/HS & • GPS-12RG Disciplined by GNSS • Disciplined by Ext. Ref. Here you can set the time offset of the 1 pps output signal that is available on the front panel. - Page 22 Using the Controls ceiver can be shifted in time from this menu. If Alarm Outputs you don’t know the exact delay, assume an Two relay-controlled alarm loops, one for ur- approximate value of 5 ns/m as a rule of thumb. gent and one for non-urgent situations, are available via a D-sub connector on the rear Alarm Menu...
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Page 23: User Options
Using the Controls Option 78/HS allow external DC voltage feed • YYYY/MM/DD instead of the standard AC line power feed. • YY-MM-DD • YY/MM/DD User Options • DD-MM-YYYY • DD/MM/YYYY • DD-MM-YY • DD/MM/YY • MM/DD/YYYY From this submenu you can configure miscella- Time Zone neous settings and obtain important data on the Here you can enter the local time zone to adjust... - Page 24 Using the Controls This page is intentionally left blank. 3-8 User Interface...
- Page 25 Chapter 4 GPS-12 Monitor...
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Page 26: Monitor
GPS-12 Monitor is an optional software pack- gram. You don’t have to download and install age allowing full remote control and monitor- another version of the software. -
Page 27: Checking For Updates
Collecting and Presenting current screen contents as a bitmap picture file, Device Data then you can start GPS-12 Monitor and go to Tools ® Snapshot to catch the moment. Select User Mode a suitable file format and save the file. - Page 28 GPS-12 Monitor This page is intentionally left blank. 4-4 Main Features...
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Page 29: Performance Check
Chapter 5 Performance Check... -
Page 30: General Information
Warming Up phase is very short. Consequently the startup process The GPS-controlled Pendulum GPS-89 or will be accelerated accordingly. Fluke 910R is a suitable choice, as it can also be used for the calibration procedure... -
Page 31: Front Panel Controls
Performance Check and go into Disciplined by GNSS mode with ad- – Verify that the signal is a square wave, equate margins. and that the low level is -1.2 V ± 10 % and the high level +1.2 V ± 10 %. Front Panel –... - Page 32 Performance Check Option 71B Option 73B (0.1 & 1 & 5 & 10 MHz) (4 x 13 MHz) Connect a DSO with 50 W inputs to all BNC Connect a DSO with 50 W inputs to all BNC connectors, one at a time. Verify that the four connectors, one at a time.
- Page 33 Performance Check – Option 78/HS only Connect 48 V to the power D-sub con- nector with the plus pole to the ground pin – Connect 12 V to the power D-sub con- and the minus pole to the pin marked nector with the minus pole to the ground -48VDC.
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Page 34: Alarm Output
Performance Check – Wait until the instrument shows the message Disciplined by 1 pps. It will nor- mally take less than 20 minutes. 1 pps Out The 1 pps output can be tested in the same way as the 1 pps front panel output. See above. 10 MHz Out The two 10 MHz outputs can be tested in the same way as Option 71B. -
Page 35: Preventive Maintenance
Chapter 6 Preventive Maintenance... -
Page 36: Calibration
0.01 Hz. 50 W. It should also have a traceable cali- – Change measurement function to Time In- bration history. The Pendulum GPS-89 terval A to B. with Option 72 is apt to the task. – BNC cables of suitable lenghts. -
Page 37: Fan Replacement
Preventive Maintenance – Set Number of Samples to 2, Pacing Time Fan Replacement to 100 s and Pacing to ON in the SET- TINGS menu. If your frequency reference is operating – Select STAT (statistics) and HOLD. 24h/day, you need to replace the fan every 5 –... - Page 38 Preventive Maintenance This page is intentionally left blank. 6-4 Battery Replacement...
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Page 39: Specifications
Chapter 7 Specifications... -
Page 40: Stability
Specifications Stability 0.1, 1, 5 & 10 MHz Outputs Locked to GNSS Allan dev. @ 20-26 °C OCXO Standard Rb HS Rb (t = 24 h) <5×10 <2×10 <1×10 (t = 100 s) <2×10 <5×10 <3×10 (t = 10 s) <2×10 <1×10 <1×10... -
Page 41: Pps Output
Specifications Hold-Over OCXO Standard Rb HS Rb Aging/month <1.5×10 <5×10 <5×10 Aging/year <1×10 <2×10 <5×10 Temp. (0 °C... +50 °C) <2×10 <2×10 <1×10 Allan dev. @ 20-26 °C (t = 100 s) <2×10 <5×10 <3×10 (t = 10 s) <2×10 <1×10 <1×10 (t = 1 s) -
Page 42: Options
*Note: The GPS-12R/HS and the (1 pps & GPS-12R) GPS-12RG are as standard Appr. 100 µs equipped with one Option 70B. (1 pps & GPS-12) Option 72B Outputs Appr. 50 ns (10 Mpps) Freq. stability: See Note 1 on page 7-7... - Page 43 GPS-12R/HS & 1.544 MHz GPS-12RG Output level: Square wave ±1.2 V ± 10% Opt. 78: GPS-12R in 75W (G.703:10) Opt. 78: GPS-12 Freq. stability: See Note 1 on page 7-7 Opt. 78/HS: GPS-12R/HS & Jitter: <0.01 UI GPS-12RG 1.544 Mbps: (G.703)
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Page 44: Led Indicator
Red LED above the key is Type: RG213 Length: 20 m, 50 m & 130 m GNSS Receiver Connectors: type N and TNC (male) Attenuation: approx. 0.4 dB/m @ 1.6 GHz Trimble Resolution-T [GPS-12(R)] Cable delay: approx. 5.05 ns/m MNP-M3 [GPS-12RG] 7-6 Options... -
Page 45: Environmental Data
-40°C...+70°C (storage) Purpose: FW loading & remote moni- Humidity: 95% RH, 0°C..+30°C toring and control. (operating & storage) See Option 29/12 (GPS-12 Altitude: <4600 m (operating) Monitor) and Chapter 4. <12000 m (storage) Vibration: 3G @ 55 Hz per MIL-T-28800D, Class 3,... -
Page 46: Ordering Information
3 x 10 MHz + 1 x 5 MHz outputs Opt. 71B: 0.1 + 1 + 5 + 10 MHz outp. GPS-12: 2 x 2.048 / 1.544 MHz + Opt. 72B: 2 x 2.048 MHz + 1 x 1 pps / 10 MHz std. outp. -
Page 47: Optional Accessories
Option 22/90: 19” rack mount kit Option 27: Soft carrying case Option 27H: Heavy duty hard transport case Option 29/12: GPS-12 Monitor, Control & Monitoring SW Option 01/00: GPS only antenna Option 01/90: GLONASS/GPS antenna Option 01/50: Antenna mounting kit... - Page 48 Specifications This page is intentionally left blank. 7-10 Ordering Information...
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Page 49: Appendix
Chapter 8 Appendix... -
Page 50: Antenna Installation
The general rule that applies to all installations help you to make the right decisions. working in or near the microwave frequency Pendulum supplies satellite antennas and an an- bands is that it should be possible to see the tenna mounting kit as well as cable assemblies transmitter from the receiver antenna position. -
Page 51: Standard Configuration
The system configurations that cannot directly from two or more directions with more or less use the standard options provided by Pendulum equal strength. Then the phase relationship de- can be listed in different ways. One simple... - Page 52 Appendix short distances between antenna and receiver. It The distance between antenna and is more flexible, however, and might be utilized receiver exceeds 130 m but not 245 m with care, if you are fully aware of its charac- – Use a line amplifier with a nominal gain teristics.
- Page 53 Appendix – Extra safety wanted due to sensitive and/or Antenna gain: +36 dB expensive equipment being connected to Cable loss: -22 dB (-55 * 0.40) the GPS timebase system. Guard band: -3 dB A lightning arrestor should be mounted inside Total gain: +11 dB (36-22-3) the building close to the cable entry point.
- Page 54 Appendix Example 4 Antenna gain: +36 dB Requirements Harsh weather: - 6 dB Cable loss: -9 dB (-55 * 0.17) Guard band: -3 dB Cable length: 325 m (120 m in- Total gain: +18 dB (36-6-9-3) doors) Lightning arrester: Climatic conditions: snow and ice This gain value is well within the acceptable range.
- Page 55 Appendix Auxiliary Components on the example when very long cable lengths are nec- essary. Market Maximum two amplifiers can be inserted in the This is a summary of system components that signal path before the loss seen from the an- may be necessary to complete an installation tenna exceeds 6 dB.
- Page 56 Pipes with 1-14 UNS thread, suitable as masts, can often be obtained from retailers selling boat gear. Pendulum offers the accessory option 01/50, an antenna mounting kit for wall or pole mount- ing. 8-8 Antenna Installation...
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Page 57: Index
Chapter 9 Index... - Page 58 Index Index Battery Replacement ... . . 6-3 1 pps / 10 MHz Check ... . . 5-3 1 pps Offset..... 3-5 Calibration .
- Page 59 Check ..... . . 5-4 GPS-12 Monitor ....4-2 Option 72B 2x2.048 MHz + 2x2.048 Mbps (spec.)
- Page 60 Index Performance Check ....5-1 Using the Controls....3-1 Power Consumption ....7-7 Power Source Menu .
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Page 61: Service
Chapter 10 Service... -
Page 62: Sales And Service Offices
Sales and Service Office For additional product information, customer support and service, please contact Pendulum at the following addresses: Altaria Services Sp. z.o.o ul.Lotnicza 37 80-297 Banino Poland Office Address: As above Shipping Address: As above +48 (58) 681 89 01...