Fluke Biomedical 2MF Index - Manual (Page 118)

Index 2MF
Users Guide
G-6
Making Electrical Simulation Cables
Index 2MFE is capable of electrically simulating a probe on a patient connected to an
oximeter.
W Caution
To avoid damage to the oximeter and the Simulator, do not
attempt to use a self-made interface cable. Use only the cable
supplied with the unit. Use of the information presented here
constitutes acknowledgment of risks involved with using any
“do-it-yourself” oximeter test interface between the Simulator
and any oximeter.
The following list is not exhaustive, but you should be familiar with all of the electronic
details of:
• The oximeter LED drive circuit
• How the oximeter decides if a probe is present
• Whether the photodiode input amplifier circuit is characterized as follows:
• Single-ended
• Differential
• A current-to-voltage converter
• Grounded photodiode
• DC biased photodiode
• Photodiode floated separately from the LEDs
• Polarity of the photodiode connections
W Caution
To avoid damage to the oximeter and the Simulator, take into
account all of the relevant details of the oximeter’s probe
operating scheme. Under no circumstances shall Fluke
Biomedical be responsible for any damages.
Figure G-4 is the hardwire test interface from the Index 2MF.