- OBJECTIVE:
To lay down a procedure for Calibration of Master clock.
- SCOPE:
This SOP is applicable for Calibration of Master clock at {Company Name} {Company Location}.
- RESPONSIBILITY:
- Technical Asst / Executive Engineering – To ensure the Calibration of Master Clock.
- Executive – IT Dept to co-ordinate for the Internet connection.
- Head – Engineering shall ensure compliance as per SOP.
- ACCOUNTABILITY:
Engineering Head
Head Quality Assurance
- PROCEDURE:
- Ensure that all the slave clocks are allotted and affixed identification numbers as per the format of Annexure-I.
- Calibration shall be performed once in a year and as when required.
- Master clock shall be coded as per the respective SOP.
- Ensure that the Master clock is calibrating by using www.time.nist.gov web site.
- Calibration of Master clock:
- Take the PC/Laptop to the master clock area to perform the online calibration.
- Switch ON the PC/Laptop and provide the appropriate username and password.
- Wait till stabilization of the system after completion of the Virus test.
- Select “START” and go to “CONTROL PANEL”.
- Select “DATE AND TIME OPTION” in the “CONTROL PANEL”.
- Select Internet time option and find the
- time.windows.com
- time.nist.gov
- In server option select time.nist.gov and click apply and then OK.
- Cross check the master clock time with the internet time for the duration of 12 Hrs. and record the timings for every 2 hrs. as per Annexure-II.
- After completion of master clock calibration cross check, the slave clocks at random places for confirming the same time by using mobile communication.
- After completion of random verification of slave clocks, affix the label to slave clocks as per the Annexure-III.
- As being slave clock receives the synchronized calibrated signal from the master clock continuously, there is no need for individual calibration for slave clocks.
- Update and affix the Calibration status label for master clock as per the respective SOP.
- If any problem with the digital wall clock is observed by the respective user Department, they shall raise breakdown request as per the respective SOP.
- If needs any replacement of the slave digital wall clock and new one shall be calibrated with a master clock and record the readings as per the Annexure-IV.
- Replacement and new slave clocks next calibration shall be follow the previous slave clocks calibration.
- Numbering of Digital Wall clocks (SLAVE)
AAAB0001-01
AAA: Indicate Digital wall clock.
B: Indicate Area/block/location of the Wall Clock
0001: Indicate unique serial number.
01: serial number of replacement Instrument
- Annexure-I will be updated when the new digital wall Clock is assigned in list.
- If any replacement of clock will be occurred at any time, That particular clock numbering will be given here under.
- REFERENCES:
Not Applicable
- ANNEXURES:
| ANNEXURE No. | TITLE OF ANNEXURE |
| Annexure-I | List of Digital Wall clocks(Slaves). |
| Annexure-II | Calibration/Verification Record for Master Clock. |
| Annexure-III | Digital wall clock (slave) verification-Labels |
| Annexure-IV | Calibration/Verification Record for Slave Clock |
ENCLOSURES: SOP Training Record.
- DISTRIBUTION:
- Controlled Copy No. 01 Head Quality Assurance
- Controlled Copy No. 02 Head-Engineering
- Master Copy Quality Assurance Department
- ABBREVIATIONS:
SOP : Standard Operating Procedure.
PC : Personal computer.
- REVISION HISTORY:
CHANGE HISTORY LOG
| Revision No. | Details of Changes | Reason for Change | Effective Date |
| 00 | New SOP | Not Applicable | To be written manual |
ANNEXURE-I
LIST OF DIGITAL WALL CLOCKS (SLAVES)
ANNEXURE-II
CALIBRATION/VERIFICATION RECORD FOR MASTER CLOCK
ANNEXURE-III
DIGITAL WALL CLOCK (SLAVE) VERIFICATION-LABELS
ANNEXURE-IV
CALIBRATION/VERIFICATION RECORD FOR SLAVE CLOCK
