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System 6844(RC) - V03.00
hopf
Elektronik GmbH
Nottebohmstr. 41
• D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: [email protected]
5.5.5.1.1 IRIG-Bxxx Format Classes in accordance with IRIG Standard 200-04
The signal output can be both digital and analog with different data content. The variations
are identified by attaching a three-digit combination of numbers. The digits indicate the fol-
lowing:
Digit 1
0 = digital output
1 = analog output via carrier signal
Digit 2
0 = no carrier signal
1 = carrier signal 100 Hz
2 = carrier signal 1000 Hz
Digit 3
0 = time, second of day, control information
1 = time, control information
2 = time
3 = time, second of day
4 = time, year, second of day, control information
5 = time, year, control information
6 = time, year
7 = time, year, second of day
e.g.
IRIG-B123
= analogue output, carrier signal 1000 Hz
=
time information data content and binary seconds of day
5.5.5.1.2 IEEE1344-1995
This IRIG Time Code Standard is based on IRIG Standard 200-89. Fixed data such as year,
time offset, etc. are assigned to the 27 bits of the control information field.
IRIG Standard 200-89 is included as a sub-section of IEEE1344.
5.5.5.1.3 AFNOR NFS 87-500
The AFNOR NFS 87-500 Code is similar to the IRIG Time Code Standard. It was estab-
lished by the French Standards Association. It is based on IRIG Standard 200-89.
IRIG-B Standard 200-89 is included in part as a sub-section of AFNOR NFS 87-500.
