2-20 SEER Light Ambulatory Recorder/Controller Revision B 
2019818-008
SEER Light/SEER Light Extend Recorder: Troubleshooting
Cannot Detect Pacemaker Pulse
Cannot detect 
pacemaker pulse.
Insert the batteries while 
pressing the STOP button. 
Disconnect the patient cable 
and touch the electrode 
connector with a finger.
Does audible beep 
sound?
Normal pacemaker detection circuit. 
Confirm pacemaker pulse detection 
by the Preview function of the 
controller. Reposition the CH1 if the 
pulse signals are too small.
Call GE Medical Systems 
Information Technologies 
Service.
No
Yes