[IGSSTATION-5483] OPMT: change of reference H-Maser on DOY 205.
Pierre Uhrich
Pierre.Uhrich at obspm.fr
Thu Jul 25 10:04:29 PDT 2013
Author: Pierre Uhrich (LNE-SYRTE, Observatoire de Paris)
Dear Colleagues,
We have performed on IGS station OPMT a change of external reference
clock on DOY 205, MJD 56497, Wednesday July 24, 2013, at about 15:00
UTC. The new reference clock is again an H-Maser, so we expect the
performances of data collected by OPMT to remain similar.
We advise potential users that OPMT data files might be corrupted for
DOY 205.
A new log file for OPMT is joined to that email.
Please feel free to contact us in the case more detailed information
would be needed.
Best regards.
Pierre Uhrich.
--
===============================================================
Dr Pierre Uhrich Pierre.Uhrich at obspm.fr
Ingénieur-chercheur LNE
Equipe Métrologie du temps
LNE-SYRTE, Phone: + 33 (0)1 40 51 22 17
UMR CNRS 8630, Fax: + 33 (0)1 43 25 55 42
Observatoire de Paris,
61 avenue de l'Observatoire, F-75014 Paris, France.
===============================================================
-------------- next part --------------
OPMT Site Information Form (site log)
International GNSS Service
See Instructions at:
ftp://igscb.jpl.nasa.gov/pub/station/general/sitelog_instr.txt
0. Form
Prepared by (full name) : Dr Pierre Uhrich
Date Prepared : 2013-07-24
Report Type : UPDATE
If Update:
Previous Site Log : opmt_20120126.log
Modified/Added Sections : 6
1. Site Identification of the GNSS Monument
Site Name : Observatoire de Paris
Four Character ID : OPMT
Monument Inscription : None
IERS DOMES Number : 10001S006
CDP Number : (A4)
Monument Description : Concrete balk and pillar
Height of the Monument : 2.30
Monument Foundation : ROOF
Foundation Depth : 14.73
Marker Description : (CHISELLED CROSS/DIVOT/BRASS NAIL/etc)
Date Installed : 2001-07-01T00:00Z
Geologic Characteristic : (BEDROCK/CLAY/CONGLOMERATE/GRAVEL/SAND/etc)
Bedrock Type : (IGNEOUS/METAMORPHIC/SEDIMENTARY)
Bedrock Condition : (FRESH/JOINTED/WEATHERED)
Fracture Spacing : (1-10 cm/11-50 cm/51-200 cm/over 200 cm)
Fault zones nearby : (YES/NO/Name of the zone)
Distance/activity : (multiple lines)
Additional Information : (multiple lines)
2. Site Location Information
City or Town : Paris
State or Province : Ile-de-France
Country : France
Tectonic Plate : Eurasian
Approximate Position (ITRF)
X coordinate (m) : 4202777.3831
Y coordinate (m) : 171367.9881
Z coordinate (m) : 4778660.1844
Latitude (N is +) : +485009.17
Longitude (E is +) : +0022005.58
Elevation (m,ellips.) : 124.2
Additional Information : Antenna phase coordinates as computed in July
: 2004 from the IGS daily determination with the
: help of Jim Ray
3. GNSS Receiver Information
3.1 Receiver Type : ASHTECH Z-XII3T
Satellite System : GPS
Serial Number : 02942
Firmware Version : 1L01-1D04
Elevation Cutoff Setting : 5
Date Installed : 2001-07-01T00:00Z
Date Removed : CCYY-MM-DDThh:mmZ
Temperature Stabiliz. : Between 19.5 °C and 23.5 °C
Additional Information : ASHTECH Z-XII3 Time Transfer P/N 700845-1(E)
3.x Receiver Type : (A20, from rcvr_ant.tab; see instructions)
Satellite System : (GPS/GLONASS/GPS+GLONASS)
Serial Number : (A20, but note the first A5 is used in SINEX)
Firmware Version : (A11)
Elevation Cutoff Setting : (deg)
Date Installed : (CCYY-MM-DDThh:mmZ)
Date Removed : (CCYY-MM-DDThh:mmZ)
Temperature Stabiliz. : (none or tolerance in degrees C)
Additional Information : (multiple lines)
4. GNSS Antenna Information
4.1 Antenna Type : 3S-02-TSADM NONE
Serial Number : 00019
Antenna Reference Point : TOP
Marker->ARP Up Ecc. (m) : 000.0000
Marker->ARP North Ecc(m) : 000.0000
Marker->ARP East Ecc(m) : 000.0000
Alignment from True N : Not required
Antenna Radome Type : NONE
Radome Serial Number :
Antenna Cable Type : Andrew HELIAX LDF2RN-50
Antenna Cable Length : 30
Date Installed : 2001-07-01T00:00Z
Date Removed : (CCYY-MM-DDThh:mmZ)
Additional Information : The antenna is temperature stabilized
4.x Antenna Type : (A20, from rcvr_ant.tab; see instructions)
Serial Number : (A*, but note the first A5 is used in SINEX)
Antenna Reference Point : (BPA/BCR/XXX from "antenna.gra"; see instr.)
Marker->ARP Up Ecc. (m) : (F8.4)
Marker->ARP North Ecc(m) : (F8.4)
Marker->ARP East Ecc(m) : (F8.4)
Alignment from True N : (deg; + is clockwise/east)
Antenna Radome Type : (A4 from rcvr_ant.tab; see instructions)
Radome Serial Number :
Antenna Cable Type : (vendor & type number)
Antenna Cable Length : (m)
Date Installed : (CCYY-MM-DDThh:mmZ)
Date Removed : (CCYY-MM-DDThh:mmZ)
Additional Information : (multiple lines)
5. Surveyed Local Ties
5.x Tied Marker Name :
Tied Marker Usage : (SLR/VLBI/LOCAL CONTROL/FOOTPRINT/etc)
Tied Marker CDP Number : (A4)
Tied Marker DOMES Number : (A9)
Differential Components from GNSS Marker to the tied monument (ITRS)
dx (m) : (m)
dy (m) : (m)
dz (m) : (m)
Accuracy (mm) : (mm)
Survey method : (GPS CAMPAIGN/TRILATERATION/TRIANGULATION/etc)
Date Measured : (CCYY-MM-DDThh:mmZ)
Additional Information : (multiple lines)
6. Frequency Standard
6.1 Standard Type : EXTERNAL H-MASER
Input Frequency : 20 MHz
Effective Dates : 2001-07-01/2002-10-11
Notes : Sigma Tau active H-MASER 205
: The required 1 pps signal is coming
: from the same standard through a
: cable labelled '403' from the output
: 'B' of a distribution amplifier TST
: 6460 labelled 'Maser 0205'.
6.2 Standard Type : EXTERNAL CESIUM
Input Frequency : 20 MHz
Effective Dates : 2002-10-11/2002-10-31
Notes : UTC(OP) issued from an HP 5071A Cesium clock
6.3 Standard Type : EXTERNAL H-MASER
Input Frequency : 20 MHz
Effective Dates : 2002-10-31/2003-04-30
Notes : Sigma Tau active H-MASER 016
: The required 1 pps signal is coming
: from the same standard through a
: cable labelled '403' from the front output
: of a distribution amplifier TST
: 6460 labelled 'Maser 0016'.
6.4 Standard Type : EXTERNAL H-MASER
Input Frequency : 20 MHz
Effective Dates : 2003-04-30/2004-10-20
Notes : Sigma Tau active H-MASER 205
: The required 1 pps signal is coming
: from the same standard through a
: cable labelled '403' from the output 'B'
: of a distribution amplifier TST
: 6460 labelled 'Maser 0205'.
6.5 Standard Type : EXTERNAL H-MASER
Input Frequency : 20 MHz
Effective Dates : 2004-10-20/2004-11-25
Notes : Sigma Tau active H-MASER 016
: The required 1 pps signal is coming
: from the same standard through a
: cable labelled '403' from the front output
: of a distribution amplifier TST
: 6460 labelled 'Maser 0016'.
6.6 Standard Type : EXTERNAL H-MASER
Input Frequency : 20 MHz
Effective Dates : 2004-11-25/2007-04-23
Notes : Sigma Tau active H-MASER 205
: The required 1 pps signal is coming
: from the same standard through a
: cable labelled '403' from the output 'B'
: of a distribution amplifier TST
: 6460 labelled 'Maser 0205'.
6.7 Standard Type : EXTERNAL H-MASER
Input Frequency : 20 MHz
Effective Dates : 2007-04-24/2008-03-11
Notes : Kvarz active H-MASER 890
: The required 1 pps signal is coming
: from the standard through a
: cable labelled '403' from the output '1'
: of a TimeTech Pulse Distribution Unit
: feeded by the signal from a Quartzlock
: A6 Frequency Convertor labelled
: 'Maser 1400890'.
6.8 Standard Type : EXTERNAL H-MASER
Input Frequency : 20 MHz
Effective Dates : 2008-03-11/2008-05-15
Notes : Sigma Tau active H-MASER 016
: The required 1 pps signal is coming
: from the standard through a
: cable labelled '403' from the output
: of a PTF 1204 Pulse Distribution Unit
: labelled 'Maser 1400816'
: feeded by a 1 pps coming from
: a distribution amplifier TST
: 6460 labelled 'Maser 016'.
6.9 Standard Type : EXTERNAL H-MASER
Input Frequency : 20 MHz
Effective Dates : 2008-05-15/2008-08-28
Notes : Kvarz active H-MASER 890
: The required 1 pps signal is coming
: from the standard through a
: cable labelled '403' from the output '2'
: of a PTF 1204 Pulse Distribution Unit
: labelled 'Maser 1400890'
: feeded by the 1 pps from a Quartzlock
: A6 Frequency Convertor labelled
: 'Maser 1400890'.
: Interruption of external clock signal
: on 2008-08-28 at 10:22 UTC
: due to failure of power supply.
6.10 Standard Type : EXTERNAL H-MASER
Input Frequency : 20 MHz
Effective Dates : 2008-09-02/2010-10-27
Notes : Kvarz active H-MASER 890
: To be considered as a "new" clock
: with respect to before power failure,
: put into operation after 13:00 UTC.
: The required 1 pps signal is coming
: from the standard through a
: cable labelled '403' from the output '2'
: of a PTF 1204 Pulse Distribution Unit
: labelled 'Maser 1400890'
: feeded by the 1 pps from a Quartzlock
: A6 Frequency Convertor labelled
: 'Maser 1400890'.
6.11 Standard Type : EXTERNAL H-MASER
Input Frequency : 20 MHz
Effective Dates : 2010-10-27/2011-01-25
Notes : Sigma Tau active H-MASER 816
: The required 1 pps signal is coming
: from the standard through a
: cable labelled '454' from one back output
: of a distribution amplifier TST 6460
: labelled 'A2M' common with TWSTFT station.
6.12 Standard Type : EXTERNAL H-MASER
Input Frequency : 20 MHz
Effective Dates : 2011-01-25/2012-01-26
Notes : Kvarz active H-MASER 890
: Put into operation after 12:00 UTC.
: The required 1 pps signal is coming
: from the standard through a
: cable labelled '554' from the output '2'
: of a PTF 1204 Pulse Distribution Unit
: labelled 'Maser 1400890'
: feeded by the 1 pps from a Quartzlock
: A6 Frequency Convertor labelled
: 'Maser 1400890'.
: The required 10 MHz signal is coming
: from the standard through a cable
: labelled '299' from the ouput 1 of
: a Quartzlock A5-12 Amplifier number 149
: labelled 'Maser 1400890'.
: The frequency multiplier x2 is new.
6.13 Standard Type : EXTERNAL H-MASER
Input Frequency : 20 MHz
Effective Dates : 2012-01-26/2013-07-24
Notes : Kvarz active H-MASER 889
: Put into operation after 17:00 UTC.
: The required 1 pps signal is coming
: from the standard through a
: cable labelled '554' from the output '2'
: of a PTF 1204 Pulse Distribution Unit
: labelled 'Maser 1400890'
: feeded by the output 2 of the Timetech Pulse
: Distribution Unit number 26
: The required 20 MHz signal is produced from
: a 5 MHz signal coming from the standard
: through the cable labelled '231' connected
: to the Timetech RF Distrisbution Unit number 23.
: The A8 output is connected to a frequency
: multiplier X4. The resulting 20 MHz signal is
: connected via the cable 422 to the Timetech RF
: Distribution Unit number 88. The B6 output
: provide the 20 MHz reference to the receiver.
6.14 Standard Type : EXTERNAL H-MASER
Input Frequency : 20 MHz
Effective Dates : 2013-07-24/CCYY-MM-DD
Notes : Vremya active H-MASER 809
: Put into operation after 15:00 UTC.
: The required 1 pps signal is coming
: from the standard through a
: cable labelled '554' from the output '2'
: of a PTF 1204 Pulse Distribution Unit
: labelled 'Maser 1400809'
: feeded by the output 2 of the Timetech Pulse
: Distribution Unit number 26
: The required 20 MHz signal is produced from
: a 5 MHz signal coming from the standard
: through the cable labelled '231' connected
: to the Timetech RF Distrisbution Unit number 23.
: The A8 output is connected to a frequency
: multiplier X4. The resulting 20 MHz signal is
: connected via the cable 422 to the Timetech RF
: Distribution Unit number 88. The B6 output
: provide the 20 MHz reference to the receiver.
6.x Standard Type : (INTERNAL or EXTERNAL H-MASER/CESIUM/etc)
Input Frequency : (if external)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
7. Collocation Information
7.1 Instrumentation Type : GPS TIME
Status : PERMANENT
Effective Dates : 2001-07-01/CCYY-MM-DD
Notes : NBS TTR5 and AOA TTR6
7.x Instrumentation Type : (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc)
Status : (PERMANENT/MOBILE)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
8. Meteorological Instrumentation
8.1.x Humidity Sensor Model :
Manufacturer :
Serial Number :
Data Sampling Interval : (sec)
Accuracy (% rel h) : (% rel h)
Aspiration : (UNASPIRATED/NATURAL/FAN/etc)
Height Diff to Ant : (m)
Calibration date : (CCYY-MM-DD)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
8.2.x Pressure Sensor Model :
Manufacturer :
Serial Number :
Data Sampling Interval : (sec)
Accuracy : (hPa)
Height Diff to Ant : (m)
Calibration date : (CCYY-MM-DD)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
8.3.x Temp. Sensor Model :
Manufacturer :
Serial Number :
Data Sampling Interval : (sec)
Accuracy : (deg C)
Aspiration : (UNASPIRATED/NATURAL/FAN/etc)
Height Diff to Ant : (m)
Calibration date : (CCYY-MM-DD)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
8.4.x Water Vapor Radiometer :
Manufacturer :
Serial Number :
Distance to Antenna : (m)
Height Diff to Ant : (m)
Calibration date : (CCYY-MM-DD)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
8.5.1 Other Instrumentation : (multiple lines)
8.5.x Other Instrumentation : (multiple lines)
9. Local Ongoing Conditions Possibly Affecting Computed Position
9.1.1 Radio Interferences : (TV/CELL PHONE ANTENNA/RADAR/etc)
Observed Degradations : (SN RATIO/DATA GAPS/etc)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Additional Information : (multiple lines)
9.1.x Radio Interferences : (TV/CELL PHONE ANTENNA/RADAR/etc)
Observed Degradations : (SN RATIO/DATA GAPS/etc)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Additional Information : (multiple lines)
9.2.1 Multipath Sources : (METAL ROOF/DOME/VLBI ANTENNA/etc)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Additional Information : (multiple lines)
9.2.x Multipath Sources : (METAL ROOF/DOME/VLBI ANTENNA/etc)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Additional Information : (multiple lines)
9.3.1 Signal Obstructions : BUILDINGS
Effective Dates : 2001-07-01/CCYY-MM-DD
Additional Information : The horizon profile is clear above an elevation
: of 10 ° except between the azimuth 240 ° E and
: 330 ° E where the buildings' mask can reach an
: elevation of 45 ° with an average walue of 23 °
9.3.x Signal Obstructions : (TREES/BUILDLINGS/etc)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Additional Information : (multiple lines)
10. Local Episodic Effects Possibly Affecting Data Quality
10.1 Date : (CCYY-MM-DD/CCYY-MM-DD)
Event : (TREE CLEARING/CONSTRUCTION/etc)
10.x Date : (CCYY-MM-DD/CCYY-MM-DD)
Event : (TREE CLEARING/CONSTRUCTION/etc)
11. On-Site, Point of Contact Agency Information
Agency : LNE-SYRTE
: UMR 8630
: Observatoire de Paris
Preferred Abbreviation : OP
Mailing Address : LNE-SYRTE
: Observatoire de Paris
: 61 avenue de l'Observatoire
: F-75014 Paris
: France
Primary Contact
Contact Name : Pierre Uhrich
Telephone (primary) : +33 (0)1 40512217
Telephone (secondary) : +33 (0)1 40512216
Fax : +33 (0)1 43255542
E-mail : Pierre.Uhrich at obspm.fr
Secondary Contact
Contact Name : Currently none
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail :
Additional Information : The name of the Agency was formerly BNM-LPTF
: then BNM-SYRTE.
12. Responsible Agency (if different from 11.)
Agency : (multiple lines)
Preferred Abbreviation : (A10)
Mailing Address : (multiple lines)
Primary Contact
Contact Name :
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail :
Secondary Contact
Contact Name :
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail :
Additional Information : (multiple lines)
13. More Information
Primary Data Center : IGN
Secondary Data Center : BKG
URL for More Information :
Hardcopy on File
Site Map : (Y or URL)
Site Diagram : (Y or URL)
Horizon Mask : (Y or URL)
Monument Description : (Y or URL)
Site Pictures : (Y or URL)
Additional Information : (multiple lines)
Antenna Graphics with Dimensions
3S-02-TSADM
-----
/ + \ <-- 0.2916 L2
| + | <-- 0.2725 L1
+--------------------------------------------------+
| |
| |
| |
| |
+-+--------------------------------------------------+-+ <-- 0.208 TGP
+-------------------+-------------+--------------------+
+----------------------| |------------------------------
| =| | ------
| +------x------+ ------
| ------
| <-- 0.381 --> ------
| ------
| ------
| ------
| ------
| ------
| ------
| ------
| ------
| ------
| ------
| ------
+-------------------------------------------------------------------
| |
--------------x-------------- <-- ARP=TOP
ARP: Antenna Reference Point
L1 : L1 Phase Center L2 : L2 Phase Center
TCR: Top of Chokering BCR: Bottom of Chokering
TGP: Top of Ground Plane BGP: Bottom of Ground Plane
TPA: Top of Preamplifier BPA: Bottom of Preamplifier
TOP: Top of Pole
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