Guralp Systems CMG-DM24 - Manual (Page 121)

Operator's guide
Trigger modes
STA/LTA, threshold,
external trigger
Digitizer
performance
Output format 32 bit
Noise-free resolution
(NPR)
22.5 bits at 20 samples/s;
21.5 bits at 100 samples/s
Absolute accuracy
0.5% standard (0.1%
optional)
Type
5
th
-order, single-bit,
low-pass noise shaper
Analogue transducer
outputs
3-C signals
Clock Oscillator
8 × 10
–7
standard (5 ×
10
–8
oven-controlled
optional)
External receiver
interface
GPS RS232 and PPS
External receiver
synchronisation
<50 µs
Internal
thermometer
Accuracy ±0.33 °C (30 °C)
±0.5 °C (10..50 °C)
±1.0 °C (–10..75 °C)
Linearity ±0.5 °C
Resolution 0.0625 °C
Power Supply +10 to +24 V DC
Current at 12 V DC ~0.12 A
October 2009 121