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KAM’98 Jumper Descriptions:
J1: (port selection)
This three-pin jumper is used to select either the radio port
pin 7 (position 1) or the serial port pin 25 (position 2) as the port to use for im-
porting an input which is selected by the setting of J2. Default: position 1.
+ J1 is used in conjuction with J2, which selects whether the input for use by J1 is
an external reset or power.
J2: (reset/power)
This three-pin jumper is used to select either an external reset
signal (position 1) or external power (position 2) for input to the KAM’98. Note
that the power option can be used either to power the KAM’98 or to provide
power from the KAM’98 to an external unit. Default: OFF.
+ J2 is used in conjunction with J1, which selects whether the input comes from
the radio port or the serial port.
J3: (GPS output)
This 4-position header provides for redirecting the DSR line of
the serial port to the AUX port. This allows sending programmed information to
an external GPS unit. In this situation, the jumper would be moved from pins 2+3
to pins 1+2. To connect DSR to DTR as well, another jumper needs to be con-
nected to pins 3+4. Default: pin 2 to pin 3.
J4: (key output)
To enable CW key output operation, place a jumper in position
2 (i.e., connecting pin 2 and the center pin). To ground radio port pin 9, place a
jumper in position 1 (i.e., connecting pin 1 and the center pin). Default: Position
2 (enable CW key output).
J5: (loopback)
Internal signal loopback used in factory test.
J6: (transmit output )
This header allows for selecting either the normal AFSK
tones (TXA) or an FSK digital signal (FSK/TXD) to the radio. The FSK data out-
put signal could be either an FET open drain (FSK) or a true 0 to 5 volt digital
signal (TXD) with 600 ohm drive impedance. See J 16. Default: TXA
J7: (1200 baud equalization)
This two-pin jumper is used to set the equalization
for 1200 baud operation. When placed on both posts, equalization is selected, and
when not connected, no equalization is used. See the calibration/equalization sec-
tion for details. Default is no equalization (i.e., OFF).
J8: (drive range)
This two-pin header selects the hi-range or low-range for the
signal output level. When the jumper is not connected, the low output range is se-
Appendix B: Advanced Information
KAM’98 Jumpers
User’s Guide
342
KAM’98 v 8.3
Содержание KAM 98
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