Tektronix CURVE-TRACER 576 Instruction Manual page 15

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Steps and Offset
Polarity
Step Families
Number of Steps
Corresronds with collector supply
polarity (positive going when PO-
LARITY switch is set to AC) when
the POLARITY INVERT button is
released. Is opposite collector sup-
ply rolarity (negative-going in AC)
when either the POLARITY IN-
VERT button is pressed or the
Lead Selector switch is set to BASE
G R 0 UN DE D. If Lead Selector
switch is set to BASE GROUND-
ED, POLARITY INVERT button
has no effect on steps and offset
polarity.
Repetitive families of characteristic
curves generated with REP STEP
FAMILY button pressed. Single
family of characteristic curves gen-
erated each time SINGLE STEP
FAMILY button is rressed.
Ranges from 1 to 1 0 as selected by
the NUMBER OF STEPS switch.
For zero steps, press SINGLE STEP
FAMILY button.
Display Amplifiers
Display Accuracies
Display magnified (DIS-
Display
(%of Highest On-
PLAY OFFSET Selec-
Unmag-
Screen Value)
tor switch set to either
nified
VERT X10 or HORIZ
X10) and offset be-
tween
100 and 35 and
10 and
40 divi- 15 divi- 0 divi-
sions sions
sions
Normal and DC
Collector Supply
Modes
Vertical Col-
2% 3% 4%
3%
lector Current
External Vert- 2% 3%
4%
3%
ical (Through
Interface)
Horizontal Col- 2% 3%
4% 3%
lector Volts
Horizontal Base 2% 3% 4%
3%
Volts
©
Specification-Type 576
External Hori-
2% 3% 4%
zontal (Through
Interface)
Leakage Collector
Supply Mode
Vertical Emitter 2%±1
3% ±1 4%±1
Current (VERT-
nA
nA nA
ICAL Switch set
between 1 0 nA
and 2 mA)
Vertical Emitter
Current (VERT-
ICAL Switch
set to
5
nA,
2
nA or 1 nA)
Not Applicable
Horizontal
Collector or
Base Volts
VERTICAL
switch set to:
1
[-LA or more
2% 3%
100 nA, 10 Not Applicable
nA or 1 nA
500 nA, 50 Not Applicable
nA or 5 nA
200 nA, 20 Not Applicable
nA or 2 nA
Step Generator
Display
4%
3%
3% ±1
nA
5% ±1 nA
3%
3% plus
0.025
v
for each
vertical
division of
deflection
on the
CRT
3% plus
0.125
v
for each
vertical
division of
deflection
on the
CRT
3% pi us
0.050
v
for each
vertical
division of
deflection
of t he
CRT
1-3