Equipment information

Spectracom 8182 NETCLOCK/2 Other
Manufacturer:
Model:
8182 NETCLOCK/2
Date:
2002
Category:
Group:
Description:
WWVB SYNCHRONIZED MASTER CLOCK

Information

The National Institute of Standards and Technology (NIST) broadcasts a time and frequency standard on Station WWVB from Fort Collins, Colorado. WWVB transmits60-kHz carrier frequency derived from the National atomic time standard. Time code is added to the broadcast by reducing carrier power 10 dB once-per-second for fixed intervals of time. The WWVB code contains information on the current year, day-of- year, and time reflecting Coordinated Universal Time (UTC). Indicators warning of Daylight Saving Time, leap second, and leap year are also encoded into the WWVB transmission. A complete description of WWVB is found in Appendix A of this manual. The Spectracom NetClock/2, shown in Figure 1-1, receives and demodulates the WWVB signal. Once the signal is decoded, the NetClock/2 automatically sets and provides accurate and traceable time data outputs. The outputs may be used to synchronize computer networks, dispatch consoles, voice loggers and event loggers. FEATURES The Spectracom Model 8182 NETCLOCK/2 offers the following features: NENA Compliant: The Model 8182 conforms to the National Emergency Number Association, NENA 04-002 PSAP Master Clock Standard. Traceability: Received WWVB broadcast provides direct traceability to the National Institute of Standards and Technology. Automatic Operation: Automatically decodes and synchronizes to the WWVB time code and adjusts for Daylight Saving Time, Leap Year, and Leap Second corrections. Timing Outputs: The NetClock/2 timing outputs are used to synchronize voice recorders, ANI/ALI, consoles, CADs and other devices found in the Dispatch Center. Each NetClock/2 includes an RS-232 interrogation port, RS-232 and RS-485 broadcast port, and both amplitude modulated and pulse width coded IRIG outputs.

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Service and User Manual
Manual Type:
Service and User Manual
Pages:
78
Size:
1.76 Mbytes (1841245 Bytes)
Language:
english
Revision:
1.2
Manual-ID:
Date:
2002 09 01
Quality:
Electronic document, no scan, very well readable.
Upload date:
2017 08 20
MD5:
53ffbc1c7f1dffdbc3a92da84e801990
Downloads:
745

Information

SECTION1.0 GENERAL INFORMATION PAGE INTRODUCTION ... 1-1 FEATURES ... 1-2 WARRANTY INFORMATION AND PRODUCT SUPPORT ... 1-2 MANUAL ERRATA AND SPECIAL DOCUMENTATION ... 1-3 UNPACKING ... 1-3 SPECIFICATIONS ... 1.5.0 1-3 Receiver ... 1-3 Status Indicators and Alarm Outputs ... 1-4 Manual Controls ... 1-4 Time Data Formats ... 1-5 Data Output Specifications ... 1-5 Serial Communication Port ... 1-6 Remote Output ... 1-6 AM IRIG Output ... 1-6 IRIG TTL Output ... 1-6 1PPS Output ... 1-7 Mechanical and Installation ... 1-7 FCC Compliance ... 1-7 Model 8219 Passive Loop Antenna ... 1-7 Model 8207 Preamplifier ... 1-8 SECTION 2 INSTALLATION PAGE 2.0 2.1 INTRODUCTION ... 2-1 WWVB Antenna SYSTEM ... 2-1 2.1.1 Antenna Location 2-2 2.1.2 Antenna Installation 2-2 2.1.3 Antenna Cable 2-3 2.1.4 Antenna Surge Suppressor 2-5 2.2 PREPARATION FOR USE ... 2-6 2.2.1 Propagation Path Delay 2-6 2.2.2 UTC or Local Time Selection 2-8 2.2.3 Automatic Daylight Saving Time 2-8 2.2.4 12- or 24-hour Display Time 2-8 2.2.5 Data Format Selection 2-8 2.2.6 Baud Rate Selection 2-9 2.2.7 IRIG Output Configuration 2-10 2.2.8 Chassis Ground 2-10 2.2.9 AC Input 2-10 2.3 2.4 OPTION 1, RACK MOUNT KIT ... 2-11 INITIAL OPERATION ... 2-12 SECTION 3 OPERATION PAGE 3.0 INTRODUCTION ... 3-1 3.1 FRONT PANEL FUNCTIONS ... 3-1 3.1.1 Display 3-1 3.1.2 Status Indicators 3-2 3.2 REAR PANEL FUNCTIONS ... 3-3 3.2.1 AGC Test Points 3-3 3.2.2 Antenna 3-3 3.2.3 Alarm Outputs 3-4 3.2.4 AC Power 3-5 3.2.5 Chassis Ground 3-6 3.2.6 IRIG TTL Output 3-7 3.2.7 1-PPS Output 3-7 3.2.8 IRIG AM Output 3-7 3.2.9 Serial Comm 3-8 3.2.10 Remote Output 3-9 3.33.4 3.5 SWITCH FUNCTIONS ... 3-10 3.3.1 Path Delay Switches 3-11 3.3.2 Time Zone Switches 3-11 3.3.3 Baud Rate Switch 3-11 3.3.4 IRIG Format Switch 3-11 3.3.5 Dip Switch Functions 3-13 3.3.6 Data Format Switch 3-15 USING THE SERIAL COMM PORT ... 3-16 3.4.1 General Guidelines 3-16 3.4.2 Time Data Formats 3-16 3.4.2.1 Format 0 3-17 3.4.2.2 Format 1 3-18 3.4.2.3 Format 2 3-19 3.4.3 RS-232 Commands and Outputs 3-20 3.4.3.1 Time Command 3-21 3.4.3.2 Version Command 3-21 3.4.3.3 Switch Setting Command 3-21 3.4.3.4 Signal Quality Log Command 3-22 3.4.3.5 Clear Buffer Command 3-23 3.4.3.6 Manual Set Command 3-24 REMOTE OUTPUT USAGE ... 3-24 3.5.1 RS-485 Guidelines 3-25 3.5.2 Connection Method 3-2 SECTION 4 SERVICE INFORMATION PAGE 4.0 INTRODUCTION ... 4-1 4.1 SIGNAL STRENGTH MEASUREMENT ... 4-1 4.2 RECEPTION PROBLEMS ... 4-2 4.2.1 Antenna Lamp 4-2 4.2.2 Signal Lamp 4-2 4.2.3 Time Sync Lamp 4-3 4.3 VCXO ADJUSTMENT ... 4-4 4.3.1 VCXO Adjustment Procedure 4-4 APPENDIX A WWVB INFORMATION APPENDIX B IRIG CODE DESCRIPTION PAGE B.0 INTRODUCTION ... B-1 B.1 IRIG B OUTPUT ... B-1 B.1.1 IRIG B General Description B-1 B.2 IRIG E OUTPUT ... B-5 B.2.1 IRIG E General Description B-5

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