LEICA GPS1200 User Manual
Page 122
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122
GPS1200+
Technical Data
Event input
For GX1200+ with PPS/Event option and GRX1200+/GRX1200+ GNSS
External oscillator
input
For GRX1200+/GRX1200+ GNSS
Pulse type:
TTL, positive or negative going pulse
Pulse length:
125 ns at minimum
Voltage:
TTL level, ~ 5 V, min. 3.3 V
Pin definition:
Centre = signal, Case = ground
Socket:
LEMO HGP.00.250.CTL
External clock input:
Frequency:
5 MHz or 10 MHz
Input impedance:
50
Ω nominal
Input VSWR:
2:1 maximum
Signal level:
0 dBm minimum to +13.0 dBm maximum
Frequency stability:
±0.5 ppm maximum
Wave shape:
Sinusoidal
Connector:
MMCX female
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