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3. Connect one end of the RS-232C Cable to the PC-2's
RS-232C Connector and the other end to the device
with which you are communicating.
If you are not able to determine which cable you will
need to connect with a particular peripheral, contact your
nearest Radio Shack Computer Center for advice.
4. (For U.S.A. only) If you are using an external power
supply for Printer/Plotter/Dual Cassette Interface,
plug the Choke Cable into the external power supply
connector of the Printer/Plotter/Dual Cassette Inter-
face. (See Figure 6.)
Powering-Up the PC-2 RS-232C Interface
The PC-2 RS-232C Interface has a built-in rechargeable
battery pack available as a power source. Also, the PC-2
RS-232C Interface can also be connected directly to an
AC Outlet via the AC Adapter included with the package.
1. Be sure the power switch of the Interface is OFF.
2. Connect the plug of the adapter (included with this
package) to the Interface power supply jack.
3. Plug the Adapter into a wall outlet.
When you receive the RS-232C Interface, the battery pack
is not "charged" up. Charge the batteries before using the
unit.
When the battery pack weakens and needs to be recharg-
ed, the Computer will tell you so by displaying one of
these messages:
The charging time will be about 15 hours.
How to connect the AC adapter and the connecting cable.
PC-2
AC adapter
~"-- 1"CC>l\o0l-n_n-,"t;02:~
=-
,~OOJ
printer/Plott~r/~~~
Dual Cassette
J
-1 1
~
Interface
Connecting
~
AC adapter
cable
((
~
- "-
Figure 6. Using the AC Adapter with the Printer/Plotter/
Dual Cassette Interface.
Connecting the Assembled Interface to a Com-
munication Device
To connect the RS-232C Interface to a communication
device (i.e., a modem or another TRS-80), you will need
an DB-25 cable such as the Model III RS-232C Cable
(26-1408).
(If you use the PC-2 to communicate with
another TRS·80, you'll also need a Null Modem Adapter,
26-1494).
For connection to a serial printer, use the PC·2 Serial
Printer cable (26-1327).
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