OPERATING
INSTRUCTIONS
Plug the
unit into a Tektronix
convertible
Oscilloscope
and turn the power
on. Allow
the
instrument to reach operating
temperature,
about
2 to 3
minutes
and free-run the sweep
at 1 millisecond/cm. Turn the MODE
switch
to
A
ONLY
and the A-channel POLARITY and
AC-DC
switches
to
NORMAL and DC respect
ively. Position the trace to about +2 cm with
the
A-channel VERTICAL POSITION
control.
Turn the MODE
switch
to
B ONLY
and the
B-channel
POLARITY
and AC-DC switches
to NORMAL
and DC
respectively. Position the
trace to about
-2 cm with the B-channel VER
TICAL
POSITION control.
Now turn the
MODE switch to CHOPPED.
Two traces will
appear on the crt
screen.
Notice that the A-channel VERTICAL
POSITION
control
moves the
upper trace and the B-
channel VERTICAL
POSITION control moves the
lower
trace. Increase the sweep speed
to 100
microsecond/cm
and notice
that each
trace
is
composed
of many start-duration
elements.
The
two
channels are being switched at approx
imately
100 kc
so that each channel conducts
for
about
5
μsec
and then is cut
off
while the
other channel
conducts for an equal time.
Now
turn the MODE switch to the
ALTERNATE
position. There are still two traces
on the
crt
screen but the traces are no
longer
chopped
into
small bits. For each sweep
cycle
one chan
nel is conducting and the
other
is cut off.
The channels
are
switched at the
end of each
sweep
cycle.
Note
Either
of the
two identical
amp-
filied
channels can be used
in
dependently
by
turning the
MODE
switch
to
A ONLY or B
ONLY
and connecting the signal
to be
observed to
the
appropriate
input.
The
following remarks apply
equally
well
to either
amplifier
channel.
PROBE
CHARACTERISTICS
PROBE
TYPE
COLOR
CODE
ATTENUA-
TION
RATIO
INPUT
IMPEDANCE
INSERTION
LOSS
AT
30
mc (db)
VOLTAGE
RATING
(Peak-to-Peak)
Resistance
(megohms)
Typical Capacitance
Minimum*
Maximum**
P410
Brown
nose
10:1
10
8pf
12pf
†
ll
pf
15
pf
†
1
600
P510
Black
Nose
10:1
10
14pf
1
600
P6000
None
10:1
10
11.5pf
14.5pf
1.2
600
P6017
None
10:1
10
12.5pf
12.5pf
1
600
*When
connected to instruments having 20
fifif
capacitance
(input).
**When
connected to instruments with input capacitance
up to 50 ppf.
t
With
8-foot cable.
AA
Operating Instructions - Type CA
2-1
