STEP 600 XTPRO: Service & Maintenance Manual - rev. 1.1
Page 6.14
Is the transmitter always
within a distance of 80 cm
from the receiver?
NO
Keep the transmitter
within the minimum
reception distance
YES
Change the receiver
A
Follow the procedure step by step to correctly diagnose the problem. Take particular care with the
checks highlighted by the circled numbers, which are described in detail below:
(1) To check for electromagnetic noise near the machine, use a frequency signal monitor
constructed as shown in the schematic below:
The circuit lights the LED for every heart beat and/or disturbance that is received: in this way
it possible to determine whether there is any interference, and identify its sources.
(2) Check the battery power level, using a tester if possible. Otherwise use a receiver or another
“reference” machine to check operation up to a distance of about 80 cm from the receiver.
Consult paragraph 11.1. “Technical notes on cardio receivers” in the Appendix.
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