R Series Service Manual
1-30 9650-0903-01 Rev. L
17.0 Pacer Test
Tools Needed: Impulse 4000 Analyzer (software 1.06 or higher) with optional external plug in pacing module (TQA-17) or equivalent.
Note: The following tests are to be performed only on R Series units equipped with the optional pacing function.
The pacer output can be measured using an oscilloscope set to DC coupling connected across a load resistor. (See above diagram for OneStep cable
connector polarity.) The load resistor is a 100 ohm, 5 watt or greater. The pacer output is a positive going pulse, 40 +/- 2 ms duration with an amplitude of
0.1 volt per milliamp of selected output (e.g., 40 milliamps of selected output has an amplitude of 4 +/- 0.5 volts of the specified tolerance displayed on the
oscilloscope).
If an external non-invasive pacer analyzer is being used, then follow the manufacturer’s guidelines for measuring the frequency (ppm), output (mA) and
the pulse width measured in milliseconds. Note that the analyzer pace load resistor must be less than 250 ohms.
Test Setup:
1. Connect the One Step cable from the R Series to the External Pacer Load (TQA-17) of the Impulse 4000.
2. Turn the Main Selector knob of the R Series to the Pacer mode.
3. Enter the pacer function on the analyzer.
Note: Do not connect ECG cable to Pacer Analyzer or ECG simulator.
Do this... Observe this... Pass/Fail
17.1 Set the PACER OUTPUT to 14 mA and
disconnect MFC connector from the Impulse
4000.
CHECK PADS and POOR PAD CONTACT messages display. The pace alarm
is active.
oo
17.2
Reconnect the
universal cable to the Impulse
4000. Press Clear Pace Alarm softkey.
CHECK PADS and POOR PAD CONTACT messages disappear. The pace
alarm is cleared.
oo
17.3 Set rate to 180 ppm; output to 0mA. No output appears on the Impulse 4000.
oo
17.4 Increase the output to 40mA. Output on the Impulse 4000 is 40mA +/- 5mA.
oo
To Next Page
Loading...
Need help?
General
