User manual
Preparing the Patient
2-3
Chapter 2
Recording an ECG
If ECG connector is exposed to high-humidity environment (90-95%RH), it is
possible that the device will indicate leads-off conditions even with all electrodes
securely attached.
The patient cable should be routed away from power cords and any other electrical
equipment to minimize AC line frequency interference on the ECG trace.
2Notes for Customers Using Reusable Electrodes
Each electrode must be attached securely. The electrode paste, gel, or creme must
cover the area beneath the electrode, but must not extend beyond it, especially on
the chest.
Table 2-1 Leads Off Labels
Designator Meaning
RL/N Right leg electrode is not connected, or only right leg electrode is connected
and all other limb electrodes are not connected.
RA/R Right arm electrode is not connected.
LA/L Left arm electrode is not connected.
LL/F Left leg electrode is not connected.
V1...V6/
C1...C6
One or more chest electrodes are not connected. For example, C2 means the
C2 electrode is not connected.
CAUTION
NOTE