User`s guide

Understanding the Extended Measurements Report
3-14 Understanding ECG Analysis and the Predictive Instruments Applications
Cal Factors
The factor by which the ECG trace differs from standard scaling (10 mm/
mV). Standard scaling is indicated by a CAL factor of 1.00.
Frontal/Horizontal
The following table lists frontal plane and horizontal plane axis parameters
and the global measurements representative of the entire ECG.
Table 3-2: Cal Factors
Parameter Units or Value Description
**Cal
Assumed**
Appears only
when true
The cal pulses were measured to be of
non-standard amplitude or shape. This
may indicate a cardiograph
malfunction.
**Paced Beats
Measured**
Appears only
when true
All beats are paced and measurements
are for paced beats.
**QRS-like Arti-
fact Detected**
Appears only
when true
Spike-like artifact was detected that may
have caused measurement error.
**Cart 1/2V** Appears only
when true
Cart was set to print chest leads at half
the scale of the limb leads.
**Computer 1/
2V**
Appears only
when true
The ECG Management System automat-
ically scaled the chest leads at half the
scale of the limb leads. This message
can only appear on ECGs printed by the
ECG Management System.
Table 3-3: Frontal/Horizontal
Parameter Units or Value Description
P degrees P wave axis.
I:40 degrees Initial 40 ms QRS complex axis.
QRS degrees Mean QRS complex axis.
T:40 degrees Terminal 40 ms QRS complex axis.