Guralp Systems Limited
MAN-ELP-0110 - Pre-amplifier for GS13- Operator's Manual

Chapter 5. Specifications

Material

Die-cast Aluminium casing

Dimensions

160 mm × 100 mm × 60 mm

Input voltage

10 V to 36 V DC

Input current

80 mA (at 12 V)

Gain

× 40 (nominal – see innav id="foot">

Equivalent input noise (with 1 k source resistance)

6 nV/√Hz @ 1 Hz (±1)

3.5 nV/√Hz @ 10 Hz (±0.5)

Frequency response

Flat from DC to 1 kHz (to within 3 dB)

Output

Differential, voltage

Output impedance

47 Ω

Output saturation level

> 20 V peak-to-peak

Calibration amplifier gain

× 8.692 (nominal – see individual instrument's calibration document)

Calibration resistor

200 Ω

Calibration signal

25 mA (into 33 Ω coil)