GE T2100 Service Manual page 69

J3 Host DB-9 Connector (cont'd.)
PIN #
J3–8
J3–9
J4 Drive DB-9 Connector
PIN #
J4–1
J4–2
J4–3
J4–4
J4–5
J4–6
J4–7
J4–8
J4–9
J6 Isolated Power Input Connector
PIN #
J6–1
J6–2
J6–3
J8 BDM Connector
PIN #
J8–1
J8–2
J8–3
2021403-120F
NAME
TXLO
TXHI
NAME
NC
RX-
TX-
NC
DGND
NC
TX+
RX+
NC
NAME
+5V ISO
ISOGND
+VUNREG
NAME
BKGND
NC
NC
T2100 Treadmill
TYPE FREQ
IN/
OUT
RS422 OUT
9600bps Host RS422 Serial
RS422 OUT
9600bps Host RS422 Serial
TYPE FREQ
IN/
OUT
NA NA NA
RS422 IN
9600bps
RS422 OUT
9600bps
NA NA NA
COM OUT
9600bps
NA NA NA
RS422 OUT
9600bps
RS422 IN
9600bps
NA NA NA
TYPE FREQ
IN/
OUT
PWR IN
DC
IN
COM DC
PWR IN DC
TYPE FREQ
IN/
OUT
LOGIC
9600bps uC Serial Comm
IN/OUT
NA NA NA
NA NA NA
Theory of Operation
COMMENT
Comm
Comm
COMMENT
NA
Drive RS422 Serial
Comm
Drive RS422 Serial
Comm
NA
Digital Gnd Supply
NA
Drive RS422 Serial
Comm
Drive RS422 Serial
Comm
NA
COMMENT
ISO Power Supply
ISO Gnd Supply
ISO Power Supply
COMMENT
NA
NA
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