Performance
Check-2445A/2455A
Service
WORD RECOGNIZER CHECKS
Equipment Required (see Table 4-1)
1
OX
Probe supplied with Oscilloscope (Item
7)
T connectors (Item 8)
BNC
Cables (Item
10)
INITIAL CONTROL SETTINGS
Control settings not listed do not affect the procedure.
NOTE
Select channels to
set
VOL
TS/DIV.
a.
Set:
VERTICAL
CH
1
and
CH
2
VOLTS/DIV
CH
3 VOL TS/DIV
CH
4 VOL TS/DIV
CH
1,
CH
2,
CH
3
CH
1
and
CH
2
Input Coupling
HORIZONTAL
A
and
B SEC/DIV
Delta
6t
and
6V
TRIGGER
SOURCE
MODE
2V
500mV
100
mV
On
son
DC
200 ns (knob
in)
Off
(press
and
release
until associated readout
is
off)
CH
1
AUTO LVL
b.
Connect the + trigger output of pulse generator # 1
via a
50-!l cable
to
the + trigger input of pulse generator
# 2.
Pulse Generators (Item 24)
Adapter (Item 25)
Adapter (Item
26)
c.
Connect the output
of
pulse generator # 1 via a 50-!l
cable
and
T connector to the
CH
1 input connector.
Use
the T connector at the
CH
1 input.
d.
Connect the output
of
pulse generator # 2 via a
50-!l cable
and
T connector to the
CH
2 input connector.
Use
the T connector at the
CH
2 input.
e.
Connect the Word Recognizer probe to the P6407
input connector at the rear
of
the instrument.
f.
Connect a BNC-male-to-dual-binding post adapter to
the T connector on the
CH
1 input,
and
connect another
BNC-male-to-dual-binding post adapter to the T connector
on
the
CH
2 input.
g. Connect a 4-inch bare
wire
(suitable for connecting a
scope probe)
to
the
red
binding post of the adapter con-
nected
to
the
CH
1 input.
h.
Connect a 4-inch bare wire (suitable for connecting a
scope probe)
to
the
red
binding post of the adapter con-
nected
to
the
CH
2 input.
i.
Connect a 2-inch bare wire (suitable for connecting a
scope probe)
to
the black binding post of the adapter con-
nected
to
the
CH
2 input.
j. Connect both ground leads from the Word Recognizer
probe
to
the bare wire on the black binding post on the
CH
2 input.
k.
Connect the
CH
3 input
to
the WORD
RECOG
OUT
connector using the instrument
X10
probe and a BNC-
male-to-probe-tip adapter.
4-39
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