Reset Switch; Power Entry Module - Tektronix 2642A Reference

The 2642A Analyzer
Introduction
Analyzer PC/XT
PCIAT
connector
connector
connector
9 pin male
25 pin female 9 pin female
Pin Number
Signal
Pin Number Pin Number
3
Ground
7 5
4
5
Received Data
2 3
6
Transmitted Data
3
2
Note: The above wiring is matched to standard
IBM
PC and AT
communications cable wiring. If you have trouble with the interface.
verify that your computer serial port wiring matches the above
diagram. Some multi-purpose cards have optional settings for the serial
ports to allow them to be wired as either DTE or DCE. If your serial
port is wired as DCE. you
will
have to reverse lines 2 and 3 (received
data and transmitted data).
Reset Switch
The reset switch stops and resets the analyzer. The effect of pressing
the switch is very similar to turning the analyzer off then on again. Do
not press reset during nonmal operation. since all processing and
displays will be terminated.
Power Entry Module
The power entry module contains the AC line fuse(s). For domestic
(North American) installations. a single fuse is used: for European
installations, two fuses are used. The power entry module also provides
selection of 120v or 240v operation. The procedure for changing the
operating voltage and fusing arrangement is described in Section 2
under Installing the 2642A.
See Specifications al the end of this section for the fuse ratings.
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