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G.R.A.S. 12AR, Instruction Manual

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Instruction Manual 

 

Power Module Type 12AR

Skovlytoften 33, 2840 Holte, Denmark

www.gras.dk  [email protected]

 

SOUND & VIBRATION

G R A S

. . . .

Summary of Contents for 12AR

Page 1: ...Instruction Manual Power Module Type 12AR Skovlytoften 33 2840 Holte Denmark www gras dk gras gras dk SOUND VIBRATION G R A S ...

Page 2: ...Revision 08 09 2006 Power Module Type 12AR ...

Page 3: ...tion and Description 3 1 1 Polarization Voltages 3 1 2 Power Supplies 3 1 3 Inputs Outputs 3 2 External Features 4 2 1 Front Panel 4 2 2 Rear Panel 4 3 Batteries and External Power Supply 5 4 Operation 6 5 Service and Repair 6 6 Specifications 7 ...

Page 4: ...zed microphones and 200V for externally polarized microphones 1 2 Power Supplies The Type 12AR can run on batteries with a battery life of approximately 30 hours using G R A S preamplifiers or from an external power supply of 4 5 24V DC see section 3 1 3 Inputs Outputs The Type 12AR has two 7 pin LEMO input connectors for microphone preamplifiers such as the G R A S Preamplifiers Types 26AM 26AC a...

Page 5: ...ternal voltage supply of 4 5 24V DC centre pin is terminal Twist release holder for 160mA low impedance slow blow fuse Latched switch for selecting a polarization voltage of either 0V for prepolarized micro phones or 200V for externally polarized microphones Applies to both channels Detachable battery drawer for housing 4 alkaline cells LR 6 AA The use of an external voltage supply automatically d...

Page 6: ...n extinguished to ensure correct operation of the unit If the Low Batt LED lights up either the external power supply voltage is too low or the batteries need changing To ensure valid measurements we recommend that you change batteries whenever the Low Batt LED is lit there will be at least one hour s use left after it first warns of low batteries To change the batteries squeeze and pull out the b...

Page 7: ...arized microphones or 0V for pre polarized microphone 3 Mount the microphones on to the preamplifiers Note the microphones must be compatible with the polarization voltage selected in step 2 4 Insert the LEMO plugs of the preamplifiers into the Input sockets of the Type 12AR 5 Using a suitable lead connect the Output sockets of the Type 12AR to an analyzer volt meter oscilloscope etc and switch it...

Page 8: ...lls or Mains line adapter supply regulated to 4 5 24V DC Power consumption 45mA with G R A S preamplifiers Battery life Approximately 30 hours using alkaline batteries Valid at 23ºC Fuse 160mA Slow 250V Low impedance fuse Operating temperature range 10 C to 50 C Dimensions Height 60mm Width 105mm Depth 130mm Weight 540g without batteries Accessories included EL0001 4 x LR6 AA batteries WEEE direct...

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