Siemens SICAM Q80 Operating Instruction page 76

E-76 SICAM Q80 7KG8080
Synchronization and time base
15.2
Parameter
balanced (default)
Drift
Ageing
Parameter
Supported formats
Precision
Jitter (max.)
Voltage level
Input resistance
Input connector
Shield potential
*PPS (pulse per second): signal is necessary, **using BCD information only
** from hardware version 7KG8080-XXX-CC
For description see here
Power Quality Recorder SICAM Q80 7KG8080, Operating instruction
E50417-B1074-C419-A2, Release 12.01.2015
value typical
time base per device without external synchronization
20 ppm
time base per device with external synchronization signal
GPS
NMEA / PPS*
TTL (PPS*)
RS232 (NMEA)
1 k (pull up)
DSUB-9 connector "GPS"
not isolated
42
min. / max. Remarks
at 25°C (accuracy of internal time base)
10 ppm
50 ppm
at 25°C, 10 years
10 ppm
DCF77 IRIG-B
B000, B001, B003**
±1 µs
±8 µs
24 V
(H>18 V, L< 12 V
U = 50 V
max
I = 2.1mA)**
max
20 k (pull up)
2-pin socket +
screw terminal connector
14..16 AWG, 0.2 mm² to 1.5 mm²
system ground
NTP
B002 version 4 (downwards
compatible)
<5 ms after ca. 12 h
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Ethernet
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