3 Testing and Maintenance Tests
48
The test module acts in the same way as an external device would, and sends signals to the VueLink
module in both analog and digital form. The computer module checks these signals for validity, and
then displays “passed” or “failed” on the screen.
The wave segment displays two waveforms, a triangular one and a rectangular one. These are displayed
alternately and for a period of ten seconds each. The expected curve type is indicated below the wave.
There are two pairs of gridlines that indicate the permitted range for the max/min values of these
waves. If all the data received by the test module is correct, the waves will lie within the specified
ranges. If either limit of either wave falls outside the respective gridlines, then the module being tested
is faulty regardless of the passed/failed messages.
When the test is complete:
1 Disconnect the cable that joins the test module to the VueLink module.
2 In configuration mode, ensure that the test module is not selected, and the preselected devices are
the same ones as before the test. Also, verify the settings for these devices.
3 Return to monitoring mode.
4 Press the Setup key on the front of the VueLink module and select the required device by selecting
Device in the Setup VueLink menu.
NOTE It is important to ensure that the preselected device drivers are configured exactly the same as they were
before the test, including their default settings.
Safety Testing
You are recommended to file the results of safety tests. This may help to identify a problem early
particularly if the test results deteriorate over a period of time.
Warnings, Cautions, and Safety Precautions
• These tests are a proven means of detecting abnormalities that, if undetected, could prove dangerous
to either the patient or the operator.
• You can perform all tests using commercially available Safety Analyzer test equipment. You can
perform basic measurements with widely available multifunction instruments such as the HP 3469A
multimeter or equivalent.
• The consistent use of a Safety Analyzer as a routine step in closing a repair or upgrade is emphasized
as a mandatory step to maintain approval agency status. You can also use the Safety Analyzer as a
troubleshooting tool to detect abnormalities of line voltage and grounding plus total current loads.
• For Europe and Asia/Pacific according to:
IEC60601-1:1988 + A1:1991 + A2:1995 = EN60601-1:1990 +A1:1991 + A2:1995
For USA according to:
UL2601-1
• Additional tests may be required according to local regulations.
• Normally, a Safety Analyzer is used to perform these procedures. Popular testers include the
DEMPSEY 232D, or for use in Europe, testers like the Rigel, Metron or Gerb. Follow the
instructions of the Instrument manufacturer. If the Dempsey is used for an extended length of time,
it could be damaged by the high amp current draw of the system.
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