Etec Aps.
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Amplifier with Highpass filter and Gain settings may be operated on the frontpanel and the internal batteries can be tested for the charge condition.
The unit contains an envelope or "click" detector which has a seperate output so the hydrophone signal and the envelope signal may be monitored simultaniously.
- Hydrophone Voltage Amplifier
- Very low noise. Extreme high input impedance
- Wide frequency bandwidth
- Includes Highpass filter and Gain controls
- Input for Piezo ceramic transducer
- Insert calibrate
- Low frequency filter to take off seawaves
- Gain control in 10dB steps
- Hydrophone output
- Click" detector output
- BNC connectors In and Out
- Not water or splash proof
- for use in laboratory environments and protected areas
- Power On/Off switch and Battery Test
- optional External power supply
- The battery test lamps also function as a signal peak indicator for monitoring the signal level to prevent overloading of the following equipment.
Internal powered with 2 pcs. build-in 9volt PP3 batteries. This unit may also be powered by an external 12Volt battery or by a +/- 12Volt dual power supply. The unit has a very low current consumption and the maximum opration time is appr. 24 hours on a set of full charged batteries.