ABM Audible Baseline Monitor
The ABM, a battery-operated voltage-controlled oscillator, lets you monitor potential audibly. ABM is particularly useful because it allows the user to estimate voltage levels when using a microscope or engaged in other tasks which do not allow viewing an oscilloscope or recorder. An audible tone is generated with increasing pitch as the input voltage becomes increasingly positive.
| ABM SPECIFICATIONS | |
|---|---|
| FREQUENCY RANGE | Audible |
| INPUT RESISTANCE | 1012 Ohms |
| MAXIMUM APPLIED INPUT VOLTAGE | ±10 V |
| POWER | Nine-volt alkaline battery, supplied |
| PITCH (VOLTAGE SENSITIVITY) | 1 octave per 100 mV @ 1 kHz |
| DIMENSIONS | 3 x 2.75 x 2 inches (8 x 7 x 4 cm) |
| SHIPPING WEIGHT | 2 lb (0.9 kg) |