OMICROM FT
SERVICE MANUAL
21 September 1998
3.8
3.3.6. ECG and respiration board (P000PLAC20 Internal Code)
The potentiometer P1 is used to adjust the notch filter (50 or 60 Hz). The signal
can be watched in PT3 with an oscilloscope.
The function of the jumpers in this board are:
1) Jumpers J1 and J2 are used to select the operation mode of 68HC11
microcontroller.
J1
J2
Function
Open
Open
Expanded multiplexed mode (Standard)
Open
Closed
Special test mode
Closed
Open
Single chip mode
Closed
Closed
Special bootstrap mode
2) Jumpers JP2 (for RxD)and JP3 (for TxD) are used to select the serial
communication with the board via RS485 or TTL.
RS485
TTL
(Standard)
JP2 JP3
JP2 JP3
JP2,JP3
J1,J2
P1
Содержание Omicrom FT
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