The Lascar FPSI 1010 is a compact colour voltage level indicator module that compares an input voltage with a defined voltage window. A red-green-red LED indication shows whether the input is below, within, or above the window; thresholds are user-settable and hysteresis is included.
The datasheet gives electrical specifications, dimensions, pin functions, scaling formulae, configuration steps, and application circuits. The module has three outputs, one for each colour level, and a low power mode that flashes the relevant colour.
| Supply voltage | 4.75 to 5.5 V d.c. |
|---|---|
| Supply current (display not flashing) | 15 mA |
| Sample rate | 4 samples/sec |
| Operating temperature range | -30 to +70 °C |
| Input impedance | 1 kohm |
It operates from a 4.75 to 5.5 V d.c. supply.
The range is 0 to 2.5 V d.c. when Vref is not connected, and 0 to 5.0 V d.c. when Vref is connected to +5.0V.
With Vref connected to +5.0V, V1 is 1.67V and V2 is 3.33V; with Vref not connected, V1 is 0.83V and V2 is 1.67V.
It indicates the voltage level by flashing the relevant colour instead of showing solid colours; the relevant output also pulses High and Low.