Arbiter Systems 1200B, Руководство по эксплуатации

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9.4 Connecting the Outputs 79
Minute
Hour
Information content
provided by
third parties
Year
Month
R
A1
Z1
Z2
A2
S
1
2
4
8
10
20
40
P1
1 2
4
8
10
20
P2
1
2
4
8
10
20
1
2
4
Day of the
week
Calendar
Day
1
2
4
8
10
1
2
4
8
10
20
40
80
P2
P3
M
0
10
20
30
40
50
Figure 9.3: DCF77 Timing Diagram – see Marker Details
DCF77 Marker Details
M minute marker (second marker No. 0): 0.1 s
R second marker No. 15 indicates service request to the DCF77 signal generation system
A1 announcement of a forthcoming change from CET to CEST or vice versa
Z1, Z2 time zone indication: CET: Z1, 0.1 s, Z2 0.2 s; CEST: Z1 0.2 s, Z2 0.1 s
A2 announcement of a leap second, 0.2 s
P12, P2, P3 parity check bits
CET is Central European Time and CEST is Central European Summer Time. CET is UTC + 1:00, and
CEST is UTC + 2:00.
9.4 Connecting the Outputs
The clock comes equipped with Phoenix-style, screw terminal connectors, which are compatible with twisted
pair cabling.
To attach, strip the wires bare, DO NOT tin with solder, insert into the correct screw
terminal positions and tighten clockwise. Use a BNC breakout to adapt coaxial cabling to the clock terminal
connectors.
NOTE: If using a shielded, twisted-pair cable (like Belden 8760), connect the cable shield at only one
point and if possible at the clock. It has become best industry practice to ground time-code outputs from
clocks, and use galvanic isolation of time code inputs to IEDs.
1
1
William Dickerson, “Time in the Power Industry: How and Why We Use It,” www.arbiter.com, Resources,
Documentation