On-Screen Electrocardiogram (EKG, ECG) Measurement
you've installed the Cardio Calipers you should find using the tool straightforward.
You can use the tips below to get the most out of the Calipers and measure like a pro.
Top Tips on Getting Started Using the Cardio Calipers
1. To Drag the Calipers
Place the curser anywhere on the horizontal bar, left
click the mouse and hold, then move the mouse, dragging
the entire caliper to the desired position.
2. To Extend the Calipers
Place the curser at the intersection of the
horizontal bar and the right vertical bar. Left click the
mouse, and hold, then drag the arm of the caliper to its
3. To Calibrate Calipers
Adjust the calipers to measure 20 Millimeters on the EKG.
Click the 'Set' button or choose 'Set Calibration to 20mm'
from the Calipers menu. The Caliper units will now be correctly
calibrated for the EKG.
4. To Change Units
Click the 'mm' units display on the face of the Calipers or press
the 'U' key on the keyboard to
cycle through the available units: millimeters, Heart Rate in BPM,
milliSeconds, and milliVolts. If Heart Rate is chosen then the correct
readout will appear when an entire complex is measured from P to P or R to R.
Type "+" (the plus sign) and any number, then press
Enter, and that number will be added and the caliper
measurement will move to that new number. Subtraction,
multiplication and division can also be accomplished
using the "-", "*" and "/" keys.
There's a lot more to the Calipers, including a huge array of extra keyboard controls.
Just press 'F1' or choose 'Help' from the options menu and you can read full details
of what's available.
You can also find full instructions on the Specifications Page