KPC-9612 Version 5.2 July 19, 1994
64
J12 (Chip Enable) This jumper is not installed in amateur units. If the clock chip (U22) is not in-
stalled, this jumper must be installed to provide the chip enable signals.
J13 (ROM size) This three-pin jumper permits the installation of different size ROMS. When placed
on the center post and 1, ROMs up to 1 megabits (128K Bytes) may be installed in socket
U19. When placed on the center post and 2, ROM sizes above 1 megabits can be installed in
U19. (DEFAULT: 1 megabit and smaller)
J14 (RAM size) This three pin jumper allows the installation of various size static RAMs in the KPC-
9612. When placed on the center post and 1, the KPC-9612 can accept up to 128K static
RAM. When placed on the center post and 2, the KPC-9612 accepts a 512K static RAM. (DE-
FAULT: 128K or less)
J15 (Hard Reset) When this jumper is placed on both posts and power is applied to the KPC-9612,
a hard reset is performed. This resets all parameters to the factory defaults and completely
erases the RAM contents. When placed on one post, the KPC-9612 is set for normal operation.
(DEFAULT: normal)
J16 (Serial configuration) This three-pin juniper, in conjunction with J17, provides an alternate
means to supply dc power to the KPC-9612 or to perform a hard reset without opening the
case. See the section on Connector Configuration for more details. (DEFAULT: center post and
2)
J17 (RESET/INPUT) This three-pin jumper, in conjunction with jumper J16, provides an alternate
means to supply dc power to the KPC-9612 or to perform a hard reset without opening the
case. See the section cm Connector Configuration for more details. (DEFAULT: one post only)
J18 (Serial configuration) This jumper is not installed. It may be used to connect the CTS pin of
the RS-232 port with the DSR pin and the DTK pin. See the section on Connector Configura-
tion for more details.
J19 (Serial configuration) This jumper is not installed, but a PC board trace connects the two pads
for this jumper. It is used to connect the DTR pin to the DSR pin of the RS-232 serial port.
J20 (Serial configuration) This jumper in not installed. It may be used to connect the RTS pin to
the DTR pin on the RS-232 serial port See the section on Connector Configuration for more
details.
J21 (DB-9 GND/RESET) This three-pin juniper connects pin 9 of the 1200 baud radio port to
ground or to the reset function. When placed on the center post and 1, pin 9 of the DB-9 con-
nector is connected to ground. When placed on the center post and post 2, pin 9 is connected
to the reset circuit in the KPC-9612. This allows you to perform a hard reset by applying a
ground to pin 9 and turning on the KPC-9612. (DEFAULT: ground)
J22 (BATT disconnect) This jumper is not installed, but a PC board trace connects the pins. Cut-
ting the PC board trace disconnects the lithium battery from the KPC-9612, disabling all bat-
tery backup functions.
To Next Page
Loading...
