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General
Versions of the
Circuit Board
Schematic
Part Number
Part Number Frequency Type
801278-001
SD801278-001 VHF for U.S.
801278-002
SD801278-002 VHF international Tuning parts values, parts location and page six of the
801278-003
SD801278-001 VHF for U.K.
801278-004
SD801278-004 UHF international Tuning parts values, parts location and page six of the
Connectors
Switches, Controls,
and Adjustments
7-2
TRANSMITTER PCB: General
There are four versions of the transmitter PCB. Make sure to reference
the correct parts list, parts location, and schematic pages for your version
of the PCB.
Parts list, parts location and schematic diagram are the
same as –003 except L5 is tuned to a different frequency.
schematic diagram are different.
Parts list, parts location and schematic diagram are the
same as –001 except L5 is tuned to a different frequency.
schematic diagram are different.
Patient Connector
Pin
Signal Name
J2-1
RL
J2-2
RA
J2-3
LA
J2-4
LL
J2-5
V
J2-6
ANTENNA_SHIELD
Serial Interface 5-Pin Connector
Pin
Signal Name
J1-1 SERIAL INPUT
J1-2 SERIAL OUTPUT
J1-3 CONNECTOR ID
J1-4 +_POWER_SUPPLY
J1-5
RETURN
Battery Connectors in Battery Block
Pin
Signal Name
W1-2
BATTERY 1 NEG TERMINAL
–
BATTERY 2 NEG/
BATTERY 1 POS TERMINAL
W1-1
BATTERY 2 POS TERMINAL
RF adjustment: C4 for 10-MHz reference frequency adjustment. This
adjustment is for factory use only.
APEX Telemetry Transmitter
401566-166
Comments
I/O
I
Patient Ground Reference
I
Patient Lead
I
Patient Lead
I
Patient Lead
I
Patient Lead
O
CMOS
I/O
Type
I
CMOS
3.3V
O
CMOS
3.3V
I
Voltage
0 - 3.3V
I/O
Battery/External Supply
O
RETURN 0V
I/O
O
Battery 1
Negative Terminal
I
Battery 1 + 2
Common Terminal
O
Battery 2
Type
Level
Type
Revision D
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