class Voltage Reference

Control the voltage reference output to generate a reference voltage on the given hardware port.

Attention

Attention the analog reference voltage on all OMC-048 loggers with BL: 1.03B0 and upwards will be 5V! All other OMC-048 loggers got a 2.5V reference voltage.

Constructor

class omc048.voltage_ref(id: integer)

Create a voltage reference object associated with a voltage reference hardware port.

id is the voltage reference hardware number, on the OMC-048 the “id” is “1” corresponding to pin 17.

Methods

voltage_ref.set(state: integer)

Set the reference output on or off.

state is 1 or 0, corresponding to on and off.

voltage_ref.on(): Enable reference output to the port.

voltage_ref.off(): Disable reference output to the port.

voltage_ref.toggle(): Switch the reference output state from the current to the other state. Turning it on when it was off and off when it was on.

Example

The following example enables the reference output (generating 2.5V as a reference), then turns the reference off after 5 seconds. Then again after 5 seconds the reference is toggled, which sets the reference output on again.

import omc048
import time

ref1 = omc048.voltage_ref(1)

ref1.on()

time.sleep(5)
ref1.off()
time.sleep(5)
ref1.toggle()