Provide product information about 2680M1/2685M1 airborne amplifiers
This instruction manual covers the Endevco Model 2680M1 charge amplifier and the Model 2685M1 IEPE (ISOTRON) signal conditioner. These solid-state airborne devices are designed for use with piezoelectric and IEPE transducers, featuring front-end circuits, optional low-pass filters, and adjustable gain potentiometers. The units are potted with polyurethane foam and sealed for environmental protection.
| Input connector type | 10-32 type |
|---|---|
| Output connector type | 5-pin bayonet-locking |
| Power supply range | 20 to 32 VDC |
| Nominal current (2680 unfiltered) | 20 mA |
| Nominal current (2685) | 30 mA |
| Input source capacitance (2680) | 10 000 pF maximum |
The 2685 can support long cables with a practical limit of approximately 700 feet (213 meters).
The case should be grounded to frame ground through the mounting screws, which act as grounding lugs.
No, there are no provisions to access TEDS, and the TEDS chip cannot be interrogated via the airborne amplifier.