Tektronix 545A Instruction Manual page 9

example: observing the junction characteristics of transis ­
tors, or measuring the resistance, capacitance or inductance
of circuit components.
The Type offers calibrated forward currents in five
fixed steps from 1 to 20 milliamps, and reverse currents
calibrated in six steps from 0 to 2 milliamps. Diode shunt
capacitance is 9 picofarads, and deflection factors are 0.05
v/cm and 0.5v/cm, calibrated.
Type T
The Type T Time-Base Generator provides sawtooth sweep
voltages from 0.2 μ sec/div to 2 sec/div. The trigger source
may be line frequency, external, ac or d c coupled, auto ­
matic or high-frequency sync. The triggering point can be
on either rising or falling slope of the waveform, and trig ­
gering level is adjustable. A signal of 0.2 to 50 volts is
required for triggering.
Type Z
The Type Z Plug-In Unit extends the accuracy of oscillo ­
scope voltage measurements. It can be used in three modes
of operation: (1) as a conventional preamplifier, (2) as a
differential input preamplifier, or (3) as a calibrated differ ­
ential comparator. With sensitivity of 50 mv/cm and in ­
serfion voltage range of ± 100 volts, the effective scale
range is ±2000 cm. Maximum resolution of the Type Z
Unit is .005%.
As a conventional preamplifier, the Type Z Unit offers
a passband of d c to 13 m c for the 545A for signals that do
not overscan the screen.
volts/cm to 25 v/cm in 9 fixed, calibrated steps.
As a differential input preamplifier, the Type Z accepts
a common-mode signal level ±100 volts with input attenu ­
ation X 1 , and offers a common-mode rejection ratio of
40,000 to 1. Maximum input signal is 1 volt/7 nsec, or — 1
volt/5 nsec.
As a calibrated differential comparator, the Type Z makes
available three comparison voltage ranges; from zero to
±1 volt, zero to ±10 volts, zero to ±100 volts.
Characteristics — Type 545A
The deflection factors are 0.05
1-5