GRAS 12AN 4-Channel Power Module

Connection:
Traditional 200 V
Channel(s): 4

Technology

Typical Applications and Use

The special features of the 12AN Power Module makes it suitable for general use.

The 12AN Power Module is for general use in acoustic measurements both in the laboratory and in the field. If you are looking for a cost-effective solution or a multi-channel power module with a direct coupling (no filters) to the output, the 12AN Power Module is a logical choice.

The input signal is coupled to the output without any filtering or A-weighting network.

Because of this, the 12AN Power Module is ideally suited for infra-sound measurements. The low-frequency cut-off at 0.05 Hz is so low that it will not be the limiting factor in infra-sound measurements. A suitable microphone system for this application is the combination of the GRAS 40AN 1/2" Free-field microphone, low frequencies and the matching preamplifier, the GRAS 26HG 1/4" Preamplifier, High Impedance.

The polarization voltage is very stable and the sensitivity of the microphone is therefore kept very stable. For this reason, the 12AN Power Module is well suited for microphone calibration.

The 12AN Power Module has four channels for multi-channel measurements and calibration setups requiring more than one channel. You can operate the 12AN Power Module on batteries or an external DC power supply. A battery indicator monitors the battery condition.

Compability

The 12AN Power Module can be used with all standard, externally polarized microphone sets and standard front ends or data acquisition units.

However, when setting up a measurement chain with the 12AN Power Module, you need to ensure proper matching of the components so that signal levels and cable lengths do not interfere with the validity of your measurements.

Quality and warranty

The 12AN Power Module is built into a sturdy, anodized aluminum case and built to high-quality standards which enables GRAS to offer 2 years warranty against defective materials and workmanship.

Service

Before leaving the factory, all GRAS products are tested. Should a power module become defective, it can be sent to GRAS for repair.

Specifications

CONDITIONING
.
Frequency response (±0.2 dB)
Hz
0.05 to 200 k
Output channel(s)
4
Direct coupling input to output
No
Linear mode
No
Type
Traditional power supply (LEMO)
Input channel(s), traditional power supply
4
Preamplifier supply
V
+-15
Polarization voltage
V
0 / 200
Overload indication
No
PC controlable
No
External filter option
No
Power amplifier overload detection
No
POWER SUPPLY
.
Power supply, battery
4 x LR6 (AA)
Power supply, external
Vdc
6 to 20
Power consumption
mA
130
Battery life
h
25
Battery low indication
Yes
Fuse
mA
160
Weight
g / oz
1,200 / 42,329
Specification Conditions

GRAS Sound & Vibration reserves the right to change specifications and accessories without notice.

Ordering info

Extension cables with 7-pin LEMO connectors

GRAS AA0008 3 m
GRAS AA0009 10 m
GRAS AA0012 30 m
GRAS AA0014 100 m
GRAS AA0020-XX Custom, XX specifies the length in metres

 

Extension cables with BNC connectors

GRAS AA0034 2 m
GRAS AA0035 3 m
GRAS AA0036 5 m
GRAS AA0037 10 m
GRAS AA0038 30 m
GRAS AA0039-XX Custom, XX specifies the length in metres

GRAS Sound & Vibration reserves the right to change specifications and accessories without notice.

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