Tektronix 455, Instruction Manual, Page: 196 / 246

455/A2/B2
VOLTAGE CONDITIONS
Voltages shown on this schematic diagram were measured with a Tektronix DM 501 Digital Multimeter. Voltage measurements can vary as
much as ±20%.
Controls were set as follows: VERT MODE CH 1
CH 1 and CH 2 AC-GND-DC GND
CH 1 POSITION Trace or spot centered
WAVEFORM CONDITIONS
Waveforms below were taken from a Tektronix 7000-series oscilloscope equipped with readout, 7B series Time-Base, 7A13 Differential com­
parator and a 10X probe. The offset voltages were read directly from the 7A13 in the dc coupled mode. If a different test oscilloscope
system is used, the ac coupled mode may have to be used due to high dc offset voltages. This can cause some waveforms to appear slightly
different. Waveforms may vary as much as ±20%.
The Main Module calibrator signal was applied to the CH 1
externally on the + slope from the calibrator signal.
A2 controls were set as follows: (except as noted below)
VERT MODE
CH 1 VOLTS/DIV
CH 1 AC-GND-DC
CH 2 AC-GND-DC
CH 1 POSITION
CH 1
5 mV
DC
GND
Trace or spot centered
input through a compensated 10X probe. The test oscilloscope was triggered
For waveforms 10 through 15,
the CH 1 and CH 2 AC-GND-DC
switches were both in the GND
position and the VERT MODE
switch was in either the CHOP or
ALT position as noted on the
waveforms.
©
' 0 m V_ !50(3 ius
20 mV
<E> <E>
0
-
1C)0 m'
j
_
5(30 MS
0
0
©
10 m V 5 00 MS
&
. 1 V M$
<* r*
t
u
✓
y
u 1
t 30 mV
500 M!
....
ALTERNATE MODE CHOPPED MODE
©
1<30 m V. 5OC Ms
ALTERNATE MODE
©
V r 2OC Ms
J
ALTERNATE MODE
0
+.7 V
0
1907-106