Background on jumpers: A “jumper” is a two-prong plug-in part that can be used
to complete a circuit between two adjacent pins on a base called a “header”, which
has 2, 3, or 4 connection points (pins) in a row. Jumpers are called “2-pin”, “3-pin”,
and “4-pin” jumpers depending on whether they are used with 2, 3 or 4-pin headers.
Also , jumpers are identified by the header (circuits) they are used to control.
Possible jumper settings (called “positions”) depend on the number of connection
points (pins) on the header. Headers with two pins have two possible jumper posi
-
tions: ON (the two pins, called pin 1 and pin 2, are connected by the jumper) and
OFF (the jumper is parked on one pin, but not connected to the other pin).
Jumpers on three-pin headers can be in one of three settings:(1) “position 1” ( or po
-
sition X, where X is the name for the pin), in which the jumper connects the center
pin to the pin labeled 1 (or X), (2) “position 2 (or Y)”, in which the jumper connects
the center pin to the pin labeled 2 (or Y), or (3) “not connected”, when the jumper is
parked on one pin, but not connected to another pin.
The KAM’98 has one four-pin header, used for Jumper (J3), in which the jumper
can be set in one of three positions: in the default position, the jumper connects pins
2 and 3 (i.e., the two central pins in the row of four pins); a second position is with
the jumper connecting pins 1 and 2; and a third setting is with two jumpers — one
jumper connecting pins 1 and 2 and the second jumper connecting pins 3 and 4.
Jumper Overview
The KAM’98 jumpers are as follows:
Default
Jumper # Setting
Name/description
.
J1 (pos 1) Radio or RS-232 port select feeding J2
J2 (OFF) Power or Reset select for J1
J3 (pin 2 to 3) Selects output to the AUX port (for
GPS)
or to the RS-232 port (for DSR).
Also can be used to connect DTR to
DSR
on the RS-232 port.
J4 (Pos 2) KEY or Gnd select for Radio port pin 9
KAM’98 Jumpers Appendix B: Advanced Information
KAM’98 v 8.3 339 User’s Guide
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