Service manual

3.3.5 Predictive Temperature Calibration Check

The predictive temperature calibration of the DINAMAP

™

Compact monitor should be checked every 12

months or when there is doubt about the validity of the temperature readings. The temperature calibration

plug (part number 320-635) may be used to check the calibration of the temperature detection circuits within

the monitor.

-- CAUTION --

DO NOT twist the calibration plug when inserting

or removing it since this may damage the precision

resistors contained within the plug.

To check the temperature calibration:

I. Insert the plug into the temperature probe connector on the front of the monitor and switch the

monitor on.

II. Switch on the DINAMAP

™

Compact and wait for the main menu to be displayed on the LCD.

III. If UUT ?C LED is lit, select MODE followed by SERVICE from the sub menu. Enter service

code 2 2 1 3.

IV. Select TEMP followed by ‘C OR F’ from the sub menu.

V. When LCD displays message ‘Trend data will be lost’, select YES and confirm ?F LED is lit.

VI. Switch unit off then on.

VII. Select the TEMP button from the main menu.

VIII. After determination, the Temperature display should show 98.6 ? 0.1 ?F.

IX. If the display is off by more than ?0.1 degrees, the monitor is out of calibration and should be

calibrated.

Note: The calibration plug contains an internal resistor that must be verified every time the monitor is

calibrated. Using a calibrated voltmeter, the resistance between pins 1 and 2 of the calibration plug

should be 6090 ? 7 ?. If the plug is not within this range, replace it.

3.3.6 Predictive Temperature Calibration

This section describes how to enter the temperature calibration code and how to calibrate the predictive

temperature circuitry. Calibration shall be conducted with an ambient temperature of 25 ?C ? 5 ?C.

Calibration of the predictive temperature is not possible without disassembling the DINAMAP

™

Compact,

since adjustment of potentiometers RV2 and RV3 on the Main Board may be required.

Note: Entry to the super service menu disables all the temperature calibration error reporting.

3.3.6.1 Calibration Requirements

I. A Counter/Timer with NAMAS approved calibration with a resolution of at least 0.1?S and an

accuracy of equal or greater than 0.1?S is required for set up of units with Main Board

software version earlier than 8613-V4.1.

II. A temperature calibration plug (part number 320-635) is required for the procedure, check that

the resistance between pins 1 and 2 of the temperature calibration plug is 6090 ? 7 ?.

III. Adjustments of calibration settings must be carried out in sequence and with no appreciable

time delay between steps. This is due to the procedure being reliant on no changes occurring

to the temperature of the UUT during the set up.