GRAS 12HF 1-Channel Power Module for Low-noise Systems
GRAS 12HF 1-Channel Power Module for Low-noise Systems
Connection: Traditional 200 V
Channel(s): 1
The GRAS Power Module 12HF is a power supply for single-channel, low-noise measurements using the matched, low-noise preamplifiers and high-sensitive microphones of a GRAS low-noise measuring system 40HF, 40HH or 40HT.
Technology
The 12HF provides:
- polarization voltage (200 V) for the condenser microphone
- voltage supplies (±15 V) for powering the microphone preamplifier
- a front panel switch response for selecting pressure or free field setting
Specifications
CONDITIONING
.
Frequency response (±0.2 dB)
Hz
2 to 20 k
Output channel(s)
1
Output impedance
Ω
30
Direct coupling input to output
No
Linear mode
No
Type
Traditional power supply (LEMO)
Input channel(s), traditional power supply
1
Preamplifier supply
V
+-15
Polarization voltage
V
200
Overload indication
Yes
PC controlable
No
POWER AMPLIFIER
.
External filter option
No
Power amplifier overload detection
No
Power supply, battery
4 x LR14 (C)
Power supply, external
Vdc
6 to 20
Battery low indication
Yes
Fuse
mA
315 (fast)
Temperature range, operation
°C / °F
-10 to +50 / 14 to 122
Weight
g / oz
620 / 21,870
GRAS Sound & Vibration reserves the right to change specifications and accessories without notice.
Ordering info
Included Items
One of these Power Supplies: | (Depending on country) |
GRAS AB0002 | Power supply 230 VAC to 15 VDC. EU-connector |
GRAS AB0006 | Power supply 230 VAC to 15 VDC. UK-connector |
GRAS AB0003 | Power supply 120 VAC to 15 VDC. USA-connector |
Optional Items
| 12HF-S20 | 12HF Power Module (Excluding Power Supply) |
