Elecraft P3 High-Performance Panadapter Manual - Manual (Page 13)

13
Rear Panel Connectors
I.F. Signals: IF IN
is a BNC jack that connects to
the intermediate-frequency output connector of the
transceiver (IF OUT on the K3). This should be a
buffered, low-level, high-bandwidth signal from the
receiver that is tapped off at a point before the high-
selectivity filters.
IF OUT is a BNC jack that may be connected to
any other device that needs the I.F. output signal
from the transceiver. When the IF OUT switch is in
the ON position, the IF IN signal is directed to a 3
dB splitter whose outputs feed both the P3 and the
IF OUT connector.
RS232 XCVR
is a male DE-9 connector that
connects to the RS232 port on a K3 (if used) using
a standard 9-pin serial extender cable. It should be a
straight-through cable (not a null modem) with a
female connector on one end and male connector on
the other. Note that communications between theK3
and the P3 are always at a data rate of 38400 baud
(see figure below). The K3 baud rate is set
automatically by the P3 and cannot be changed at
the K3.
RS232 PC
is a female DE-9 that optionally may be
connected to a personal computer that can be used
for downloading new firmware and for sending and
receiving commands to the P3 and K3 (if
connected). To set the baud rate, refer to the RS232
Menu entry on page 33. The baud rate also may be
set by using the same RS232 command (BR) as for
a K3. Refer to the K3 or P3 Programmer’s
Reference
for details. To download firmware to the
K3, see Updating K3 Firmware on page 29.
Power:
10-15 VDC is a standard 2.1 mm barrel
connector for a 10-15 VDC supply. See
Connections
on page 5 if you wish to take power
from the K3’s
12VDC OUT
jack.
The following are present only if the P3SVGA
option is installed:
KEYBOARD:
USB jack for a USB keyboard or
thumb drive (mass storage device). Apple
keyboards are not supported at this time.
EXT.DISPLAY:
Output to an external SVGA
monitor.
SENSOR and AUX DATA:
For future use.
RS232 Communications Path through the P3
.