Time synchronization (<1 msec) of
PowerLogic meters and Sepam relays
Trimble AcutimeTM Gold GPS
Antenna (”Smart Antenna”)
RS-422 signal,
Antenna interface cable: CAB-ACU-xxx
xxx = length (50, 100, 200 or 400 feet)
STR-100
Satellite Time Reference
Satellite Time Reference
DCF OUT
PWR
24Vdc
9
9
&ODVV
32:(56833/<
/
1
GPS INTERFACE
DCF
SYNC
CH 1
STAT
CH 2
DCF77
IRIG-B input
(modulated)
1per10
Daisy-chain wiring, Belden 8760 cable
or equivalent, 1000 feet (300m) max.
*
24Vdc power supply
(e.g., PS-24V-15W or PS-24V-50W)
1 to 16
devices
1 to 16
devices
MERLIN GERIN
DCF77 devices
(e.g., PowerLogicTM meters: CM4, CM3 or PM870)
MERLIN GERIN
1per10 devices
(e.g., SepamTM relays, series 20, 40, 80)
Typical SER system architecture drawing: STR-100 provides time reference for meters and relays