Tektronix 323, Инструкция по эксплуатации

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VERTICAL DEFLECTION SYSTEM (cont)
Specification— Type 323
Characteristic Performance Requirement O perational Information
Trace Shift Due to Input Current
+ 2 0 ° C to + 3 0 ° C 0.085 division, or less, at 0.001 volt/divi-
sion. Equivalent to 85 picoamperes, or less.
—15° C to + 5 5 ° C 0.7 division, or less, at 0.001 volt/division.
Equivalent to 0.7 nanoamperes, or less.
Trace Drift
Drift with time
Short term (temperature and
line voltage held constant)
0.2 division, or less, during any minute
after 10-second warm up.
Long term (line voltage held
constant, temperature held
constant between + 2 0 ° C
and + 3 0 ° C)
0.2 division, or less, during any hour after
10-second warm up.
Drift with line voltage change
(temperature held constant)
0.1 division, or less, with line voltage
change from 90 to 136 volts or 180 to 272
volts.
Drift with temperature (line volt­
age held constant)
Two divisions, or less, from reference at
+ 2 5 ° C with temperature change from
- 1 5 ° C to + 5 5 ° C.
TRIGGERING
Trigger Source Internal or external
Trigger Coupling
Internal AC (capacitive) coupled.
AC (capacitive) coupled, low-frequency re­
ject. Selected by front-panel Trig/Horiz Cou­
pling switch.
External AC (capacitive) coupled.
DC (direct) coupled.
Trigger Mode Manual triggering adjustable for desired
level.
Automatic triggering at average level of
triggering waveform; free-running baseline
in absence of adequate trigger signal.
Selected by front-panel TRIGGER control.
Trigger Polarity Sweep can be triggered from positive-going
or negative-going portion of trigger signal.
Trigger Sensitivity (manual and
automatic)
Internal See Fig. 1-2.
Correct triggering in the automatic mode
may not be obtained for some signals such
as low-duty cycle or low-repetition rate sig­
nals.
External See Fig. 1-2.
External Trigger Input
RC characteristics One megohm ± 2 % paralleled by 62 pico­
farads ± 4 pF.
Maximum input voltage
300 volts DC + peak AC.
TRIGGER control range
EXT TRIG OR HORIZ ATTEN
at I X
+0.8 volt to —0.8 volt.
EXT TRIG OR HORIZ ATTEN
at 10X
+ 8 volts to —8 volts.
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