G.R.A.S. Sound & Vibration
Power Module Type 12HM - Page 12
5.
Specifications
Input/Output sockets per channel:
Input:
7-pin LEMO EGA 307 1B
Output:
BNC coaxial
Gain Adjustment per channel:
±3 dB
Frequency response:
with 1-inch Preamplifier Type 26HF and 1-inch Microphone Type 40EH
10 Hz - 10 kHz
±2.0 dB
12.5 Hz - 4 kHz:
±1.0 dB
6 Hz - 12.5 kHz:
+2.0 dB, –3.0 dB
with ½-inch Preamplifier Type 26HH and ½-inch Microphone Type 40AH
10 Hz - 16 kHz
±2.0 dB
12.5 Hz - 10 kHz:
±1.0 dB
6 Hz - 20 kHz:
+2.0 dB, –3.0 dB
Nominal sensitivity:
with 1-inch Preamplifier Type 26HF and 1-inch Microphone Type 40EH
Channel:
1.1 V/Pa
Microphone:
110 mV/Pa
with ½-inch Preamplifier Type 26HH and ½-inch Microphone Type 40AH
Channel:
0.9 V/Pa
Microphone:
90 mV/Pa
Microphone polarization voltage:
200 V
Channel separation:
20 Hz - 20 kHz:
>90 dB
Output impedance:
30 Ω
Output voltage:
Max:
±10V
p-p
Power supply:
Mains/line:
115 V or 230 V AC (nominal)
Power consumption:
With 10 G.R.A.S preamplifiers
35 VA
Fuse:
315 mA (Slow) for 115 V AC mains/line supply, or
160 mA (Slow) for 230 V AC mains/line supply
Operating temperature range:
-10 °C to +50 °C
