LEICA GPS1200 - Manual (Page 120)

120 GPS1200+ Technical Data
Protection against water, dust and sand
Humidity
PPS output
For GX1200+ with PPS/Event option and GRX1200+/GRX1200+ GNSS
Type Protection
All receivers IP67 (IEC 60529)
Dusttight
Waterproof to 1 m temporary immersion
Type Protection
All receivers Up to 100 %
The effects of condensation are to be effectively counter-
acted by periodically drying out the receiver.
PPS output characteristics:
Peak:
3.3 V = High
Impedance: 50 Ω
Pulse length: 1 ms
Leading edge: Coinciding with the beginning of each epoch.