5 specifications – Guralp Systems CMG-RTM User Manual
Page 12

CMG-RTM Real-time Clock / GPS Simulator
5 Specifications
Physical
Length (casing)
150 mm
Length (including connectors)
162 mm
Width
80 mm
Depth
45 mm
Material
Polystyrene
Display
21 character, 4 line
Weight
305 g
Electrical
Power supply input voltage
5 V to 36 V DC
Power supply input current
(without receiver connected)
20 mA at 12 V DC
Battery capacity
1.84 Ah
Battery backup
7 – 10 days
Timing
NMEA output sentences
$GPGSA and $GPZDA
Trained Temperature range
-10 °C to +50 °C
in 1 °C increments
(extrapolated for out-of-range values).
Operating Temperature range
-10 °C to +60 °C *
* Battery and display performance are
both compromised at the extremes of
this range but timing performance is
unaffected.
Accuracy
<3×10
-8
(<100 ms per month)
12
Issue B