GE Corometrics 250cx Series, Руководство по обслуживанию

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4-46 250cx Series Maternal/Fetal Monitor Revision C
2036947-001
Maintenance: 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 by selecting the
Service
softkey at the bottom
of the
General Setup
Screen. Input the
Service Lock
access code, then the
Install
Options Screen 1
appears. Select the
Tests
softkey from the bottom of the screen.
(Refer to“Diagnostic Control Screen” on page 5-5 for instructions.)
2. Use the Trim Knob control to select the
J102
softkey at the bottom of the screen.
The
J102
screen displays. (See figure “J102 Analog Output Connector Screen”
on page 4-47.)
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 from the full range of mmHg or kPa in
increments: mmHg ranges from 0-100 in steps of 1; kPa ranges from
0-13.3 in steps of 0.1 or 0.2 (based on rounding from mmHg).
HR1 Mode
Use the Trim Knob control to select:
– – –, FECG, Off, US, or INOP.
HR2 Mode
Use the Trim Knob control to select:
TEST, FECG, INOP, US, or MECG.