Safran LNRClok-1500 Manuals

Manuals and User Guides for Safran LNRClok-1500. We have 1 Safran LNRClok-1500 manual available for free PDF download: User Manual

Safran LNRClok-1500 User Manual (85 pages)

Rubidium Clock with Embedded GPS/GNSS

Brand: Safran | Category: Network Hardware | Size: 2 MB

Table of Contents
2
Introduction
6
LNRCLOK System Description
6
Principle of Operation and Basic Configuration
6
Physics Package
8
Electronics Package
8
Principal Functions of the Electronic Circuits
8
The Timing and Tracking System
12
The "Track" Mode and the "Sync" Mode
13
The Frequency Learning
13
The Frequency in Use
13
User Frequency Correction
14
The Pps Tracking Loop
14
Tracking Limits and Alarms
14
Frequency Fluctuations During the Tracking
15
Fine Phase Comparator Offset
15
Starting the Tracking, Precautions
15
Lnrclok Installation and Operation
16
Introduction
16
Safety
16
Environmental Responsibility
16
Shipping and Receiving Information
16
Mounting
17
Lnrclok-1500 Package
18
PIN FUNCTION LAYOUT for LNRCLOK-1500
19
The "Lock" Monitoring
20
Analog Frequency Pulling
20
Pps Facilities
20
Other Provided Signals
20
Optional Signals
20
Serial Communication Interface 1
21
Introduction
21
Serial Interface Connection
21
Simple 1 Character Commands
22
Basic 2 Characters Commands
25
Timing & Locking Control Functions Shortlist
25
Timing & Locking Control Functions Extended List
27
Information Commands
27
Tracking Commands
31
Ppsout Commands
37
Date / Time Commands
38
Setting Commands
40
Other Commands
43
Device Status
44
Status Broadcasted by Messages
44
Pin #4 and #5 Status Levels
44
The Mavxx.. Command Is a Computer and Human Oriented Command to Tune Quickly
45
Introduction
45
Mavxx
46
Clock Main Parameters
46
GPS Main Parameters
46
Factory Welcome Message
48
User Welcome Message
48
Messages Delay
49
Messages Interval
50
Timing and Frequency Flags
51
Tracking Flags
52
Tracking Start Flags
53
Communication Flags
55
Holdover
56
Aging
56
Environment Flag
56
Messages Coming out Every Second
57
Validity Duration of the a / V Flag, Message $GPRMC
59
Warm-Up Delay
59
Pulse Width
59
Tracking Window
60
Alarm Window
61
Tracking Loop Time Constant
62
Fine Comparator Offset
63
Pulse Every D Second
64
Pulse Origin
65
Frequency Limit
66
GPS Type
67
GPS Language Selection
67
GPS Resource Utilization
68
GPS Longitude
69
GPS Latitude
69
GPS Altitude
70
GPS- UTC Offset
70
Serial Communication Interface 2
71
Introduction
71
Serial 2 Interface Connection
71
The NMEA Messages
71
Conditions
71
Messages Activation
71
Messages Cancellation
71
The NMEA Messages List
71
Message NMEA $PTNTA
71
Message NMEA $PTNTS,B
72
Message NMEA $GPRMC
73
Message NMEA $GPZDA
74
THE NMEA $GPRMC Mode
74
Special Commands
75
Time of Day Command Synchronization
76
Ttl or Cmos Level "Lock Monitor" Generation
76
Direct Visual "Out of Lock" Signal Generation
77
Connecting a Ppsref to the Lnrclok
77
Time Tagging on the PPSREF Input and the BT8 Command
77
Signification of the BT9 Message
77
Time and Date in Use in the Isync Clock
78
The Time Constant of the PI Loop. Rb LNRCLOK
78
LNRCLOK Simplified State Machine and Status Indication
79
Annexes
80
The Reference Design for the Lnrclok
80
Playing with the Gps Receiver
81
Direct Communication with the GPS Receiver
81
Tracking the Internal GPS While in Communication with It
82
Testing the GPS Jamming
83
Safran Technical Support
85

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Safran LNRClok-1500 Manuals

Safran LNRClok-1500 User Manual (85 pages)

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