Mô-đun nguồn 2 kênh GRAS 12AR

GRAS 12AR 2-Channel Power Module

Part Number: GRAS 12AR

Category: GRAS Sound & Vibration

Status: Available

Connection: Traditional 200 V
Channel(s): 2

Sale Price: Liên hệ

0903368648

+84903368648

The GRAS 12AR Power Module is a dual-channel power supply for preamplifiers used with condenser microphones. It is for general use in acoustic measurements; both in the laboratory and in the field.

Technology

Typical Applications and Use

General-purpose measurements
Two channels
Precision measurements
Acoustic monitoring
Microphone calibration
0 V or 200 V polarization

Design

The 12AR can be powered either via the included AA batteries, or an external DC supply (4.5 V - 24V). It is built into a sturdy anodized aluminum cabinet.

The polarization voltage for the microphones fitted to the preamplifiers can be set to 0 V — for prepolarized microphones, or 200 V — for externally polarized microphones.

The 12AR also supplies ± 15 V to power the preamplifiers. It will run for approximately 30 hours on fresh standard alkaline batteries. A Low Batt LED indicates the condition of the batteries.

The inputs are two 7-pin LEMO sockets on the front panel, which are wired up for GRAS microphone preamplifiers, e.g. 26AB, 26AC, 26AJ, and 26AK, but is also compatible with other available makes of similar microphone preamplifiers.

The signals from the preamplifiers are AC coupled to the outputs which are standard BNC sockets also on the front panel.

Warranty

All GRAS products are made of high-quality materials that will ensure life-long stability and robustness. The 12AR is delivered with a 2-year warranty. The warranty does not cover products that are damaged due to negligent use.

Service and Repairs

All repairs are made at GRAS International Support Center located in Denmark. Our Support Center is equipped with the newest test equipment and staffed with dedicated and highly skilled engineers. Upon request, we make cost estimates based on fixed repair categories. If a product covered by warranty is sent for service, it is repaired free of charge, unless the damage is the result of negligent use or other violations of the warranty.

Specifications

Frequency response (±0.2 dB)	Hz	0.05 to 200,000
Output channels		2
Output impedance	Ω	30
Direct input to output connection		No
Linear mode		No
Type		Traditional power supply (LEMO)
Input channels, traditional power supply		2
Preamplifier supply voltage	V	±15
Polarization voltage	V	0 / 200
Overload indicator		No
PC controllable		No
External filter option		No
Power amplifier overload detection		No
Power supply, battery		4 × LR6 (AA)
Power supply, external	Vdc	4.5 to 24
Power consumption	mA	45
Battery life	h	30
Low battery indicator		Yes
Fuse	mA	160 (slow)
Operating temperature range	°C / °F	-10 to +50 / 14 to 122
Weight	g / oz	540.00 / 19.05