Fluke Biomedical 4000M+ - Manual (Page 15)

2 Operation
Calibration Check
2-7
2.6 Calibration Check
A calibration check should be performed periodically, or whenever a problem with the unit is suspected.
Use the following procedure to perform a calibration check on the Model 4000M+:
1. Turn the Power Switch to ON. The Model No., software revision level, and filter setting will be
displayed, followed by a FLUORO Ready or RADIO Ready indication, depending on the position
of the FLUORO/RADIO Switch.
2. Position the Mode Selection Switch to RADIO.
3. Position the Sensitivity Selection Switch to LOW.
4. Rotate the filter wheel to the CHK position.
5. Position the detector as discussed in Section 3 – Theory of Operation.
6. Set the x-ray machine to 100 kV, 100 mA, and 100 msec.
7. Make an exposure.
8. At the end of the exposure, one of the following messages will be displayed:
a. CHK OK, indicating that the Model 4000M+ has passed the calibration check.
b. CHK Error LOW or CHK Error HIGH, indicating that the Model 4000M+ has NOT passed the
calibration check. Repeat Steps 2 through 6.
If the unit continues to fail the calibration test, contact Fluke Biomedical at 440.248.9300 for further
instructions.
2.7 Radiographic Measurements
Use the following procedure to make kVp, exposure, and time measurements with the Model 4000M+ in
the Radiographic Mode:
1. Turn the Power Switch to ON. The Model No., software revision level, and filter setting will be
displayed, followed by a FLUORO Ready or RADIO Ready indication, depending on the position of
the FLUORO/RADIO Switch.
2. Position the Mode Selection Switch to RADIO.
3. Position the EXP/ALL Switch to ALL.
4. Position the Sensitivity Selection Switch to HIGH or LOW as required. (Refer to Sensitivity
Selection in Section 3 – Theory of Operation.)
5. Position the Tube Target (Anode)/Filter Selection Switch to Mo/Mo or W/Al as required. (Refer to
Tube Target (Anode)/Filter Selection in Section 3 – Theory of Operation.)
6. Rotate the filter wheel to the appropriate kVp setting, depending on the kVp setting of the X-Ray
machine. The RADIO Ready indication should appear on the display.
NOTE
If there is a hardware failure, an ERROR message
may be displayed instead of the RADIO Ready
condition. Error message indications and
meanings are discussed in Section 3 – Theory of
Operation.
7. Position the detector as discussed in Section 3 – Theory of Operation.
8. Make an exposure.