8-18 120 Series Maternal/Fetal Monitor Revision B
2015590-001
Self-Tests: J102 Analog Output Connector DAC Static Test
J102 Analog Output Connector DAC Static Test
This screen displays the J102 pin numbers, the signal descriptions, the range of
allowable values for measured voltages, the expected output voltages, and the
settings (meaning) adjustable using the Trim Knob control. Use this screen while
verifying and calibrating the digital-to-analog converters (DACs) on the
Communications Board (No. 13388 or 15297).
1. Access the Diagnostic Control screen. (Refer to page 8-10 in the 120 Series
Monitor Service Manual for instructions.)
2. Use the Trim Knob control to activate the
J102 softkey at the bottom of the
screen. The J102 Analog Output Connector screen displays (see Figure 8-5.)
3. The Range and Voltage fields can be displayed using a decimal point or a
comma as a separator. Each activation of the
DECIMAL softkey at the bottom
of the screen alternates between using a decimal and a comma.
4. Use the Trim Knob control to cycle through the available settings for each field.
The expected voltage for each J102 pin number changes accordingly.
Verification
For each pin, select a value in the Meaning field and measure the expected output.
Analog Ground
This field is not adjustable. Use J102, pin 3 as a ground when making
measurements on other pins.
HR1 and HR2
Use the Trim Knob control to select: – – – (0 BPM) or 30–240 BPM in increments
of 1 BPM.
UA
Use the Trim Knob control to select 0–100 relative units in increments of 1 relative
unit.
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