PK-232 MBX – OPERATING MANUAL COMPUTER INSTALLATION
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CHAPTER 2 – COMPUTER INSTALLATION
2.1 Overview
In this chapter we will connect the PK-232 to the RS-232 Serial port of your Computer or
Computer Terminal. After the Serial connection has been made we will perform a quick
check of the PK-232 internal software. Finally we will check the PK-232's internal modem by
performing a Packet "loop-back" test. When you have completed this chapter, you will be
ready to connect the PK-232 to your receiver or transceiver and begin using it on the air.
2.1.1 Equipment Required
You will need the following for this chapter:
o your PK-232 Data controller;
o a 13.6-volt DC, 1-amp (or greater) regulated power supply such as those sold by
Radio Shack (or an AEA AC-4); (the power supply must be able to supply at least
12 VDC to the PK-232 while it is operating under load);
o the included PK-232 DC power cord unless the AC-4 is used;
o your Computer or Computer Terminal;
o a Communications or Terminal Emulation program for your computer;
o the included RS-232 cable with 25-pin "D" connectors on each end; (do not use a
3rd-party RS-232 cable with more than pins 1-8 and 20 connected);
o one of the included 5-pin shielded "Radio cables"; (note that the radio cables may
arrive as a single 10-ft. cable which should be cut in half producing two 5-ft. ca-
bles)
o wire cutters and strippers or a small pocket knife, a small straight-blade screwdriver
and a medium phillips-head screwdriver.
2.2 Unpacking the PK-232
Carefully remove the PK-232 from the box and its plastic bag. Inspect the unit for signs of
damage that may have occurred in shipping. If there is visible damage, please contact the
dealer or shipper. Do not attempt to install or use a damaged PK-232. We will be discussing
some of the Controls, Indicators and Connections in this installation so take a few moments
to familiarize yourself with them. The figures on the next pages may help with their loca-
tions.
2.2.1 Connecting Power
MAKE SURE YOUR POWER SUPPLY IS OFF AND UNPLUGGED BEFORE WIRING !
o Locate the PK-232 Power Cable in the accessory bag. Strip off just enough insulation
from the ends to connect it to your 12-14 Volt DC regulated power supply.
o The Center pin of the coaxial power plug is POSITIVE. Connect the lead with the
White stripe to the POSITIVE (+) lead on your power supply. Check this with an
Ohm-meter if you have one.
o Connect the solid Black (GROUND) lead to the NEGATIVE (-) lead of your power
supply. (The AEA AC-4 Wall Transformer is already wired correctly.)
o Connect the Coaxial power plug to the 13 VDC Power Receptacle on the left rear of
the PK-232. DO NOT CONNECT YOUR COMPUTER YET.
o Plug in your power supply or AC-4 and turn on power. Turn on the PK-232 by de-
pressing the Power Switch on the front of the unit.
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