Mindray Passport 5-Lead, Service Manual

Page: 32 / 544

Operation (5-Lead, 5L, LT) Operation (5-Lead, 5L, LT and XG)
1 - 20 0070-00-0420 Passport 5-Lead, 5L, LT, XG Service Manual
• ECG SIZE - The ECG size displays a vertical bar and a “1 mV” label. The vertical bar is
used as a reference to determine the size of the displayed ECG waveform. There are a
total of 6 size settings for the vertical bar. Five size settings are 0.25, 0.5, 1, 2, 3 cm.
The sixth setting is larger than the ECG waveform window and therefore the “1 mV” label
is removed. The size that measures a 1 cm signal on the display is indicated by small line
segments added to the top and bottom of the vertical bar (as shown above).
• ECG LEAD - The ECG lead display shows the current ECG lead selection. The lead
display options are I, II, III, aVR, aVF, aVL, and V.
•
ECG WAVEFORM
- The display shows the ECG waveform at a user selected speed.
This provides 4 seconds of data on the display (at 25mm/sec). The scale of the waveform
is determined by the ECG size selected.
• LEAD FAULT MESSAGE - The lead fault message box displays “ECG Lead Fault” and is
positioned over the area where the ECG waveform normally resides.
•
PACER ENHANCEMENT
- Factory default is “Pacer enh OFF” (pacer enhancement off).
The OFF setting allows any pacer to appear as it normally would on the ECG waveform.
When pacer enhancement is turned on via patient menu selection, detected pacers are
enhanced and appear as full scale, narrow square waves.
•
ESU INTERFERENCE MESSAGE-
When a large high frequency noise component is
present on the ECG waveform, the message “ESU Interference” is displayed. If both high
frequency and 60 Hz noise are present, the “ESU Interference” message has priority over
the “Interference” message to display. The “Artifact” message is also displayed in the
Heart Rate window.
•
INTERFERENCE MESSAGE
- When a large 60 Hz noise component is present on the
ECG waveform and the notch filter is enable, the “Interference” massage is displayed.
Check the patient electrode connectors and the cable for proper connection. The
message may be the result of using inappropriate 3-Lead cables. The “Artifact” message
is also displayed in the Heart Rate window.
1.3.3.3 Multi-function Display Area
FIGURE 1-10 Multi-Function Display Area