7.1.2.4 Test For Recording Speeds 25 And 50 Mm/S; Device Test Result Check; Rs-232 Interface Test; 7.1.2.7 Analysis Of The Ecg Signals And Hr Value - GE MAC 1200 Servicing Instructions

GE Medical Systems MAC 1200 V 1.2 Page 55
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7.1.2.4 Test for recording speeds 25 and 50 mm/s
- Carry out the "Motor test " as detailed in Sections 3.5, respectively.
- Enable measurement marks by pressing the "A" key.
- The feed speed deviations should be less than 3%.
7.1.2.5 Device Test result check
- Output "Test results " as detailed in Sections 3.6, respectively.
- Main parameters: - all memory stores free from error?
- ASIC test O.K?
- Sample rate 1000?
- Printhead voltage > 18V, battery charge O.K?
- Printout clearly legible and without any lapses or interference?
7.1.2.6 RS-232 interface test
Carry out the "Interface test " test item "(1) Transmitting and receiving", as detailed in Section
3.9, respectively.
7.1.2.7 Analysis of the ECG signals and HR value
Carry out the following settings on the ECG simulator:
- Amplitude 4 mV
- Heart rate (RATE) 60bpm
Connect the electrode leads as indicated below:
RA ——> RA
LA ——— > LA
LL === = — > LL
RL — > RL
VI ——> V1
VO —— > V6
Switch in 6 lead operating mode and start recording by pressing the Start key.
By pressing the lead scrolling key, check whether all leads are being recorded.