Sigma SQM-160 manual Chapter Operation Sensor Min/Max Frequency

Chapter 2 Operation

2.5Sensor Min/Max Frequency

The Sensor Min/Max frequencies establish the operating range for the sensing quartz crystals. Both values are used to determine the % life that is displayed in Xtal Life mode.

When the sensor frequency drops below the minimum, the SQM-160 indicates a sensor failure by blinking the Crystal Status display. Likewise, a sensor whose initial value exceeds the maximum will cause a blinking Crystal Status.

To set sensor minimum and maximum frequencies:

1.Press Program to enter program mode.

2.Press Prev to enter the System Parameters Menu

3.Press Next until FMIN/FMAX is shown.

4.Depress the Control Knob to display FREQ MIN .

5.Adjust the Control Knob to the desired minimum operating frequency on Display2.

6.Depress the Control Knob to accept the minimum value and display FREQ MAX.

7.Adjust the Control Knob to the desired maximum operating frequency on Display2.

8.Depress the Control Knob to accept the maximum value.

9.Press Program to exit the System Parameters Menu and return to normal mode.

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