Tektronix 545A Instruction Manual page 7

Construction
Aluminum-alloy chassis and
etched anodized panel, blue wrinkle-finished cabinet.
Dimensions — see Figure 1-2.
Weight — 65 pounds.
Accessories
1 — 3 to 2-wire Adapter, 103-013
2 — Type P6006 Probes, 010-127
2 — Binding Post Adapter, BNC, 103-033
1 — Test Lead (012-031).
1 — Type F510-5 Green Filter (378-514).
2 — Operator ' s Manuals.
1 — Operator's Handbook.
1 — 3-conductor power cord, 161-010
Fig. 1-2. Type 545A Oscilloscope Dimensions.
Type N
The Type N ampling Unit is designed for use with Tek-
tronix plug-in type Oscilloscopes.
thus formed permits the display of repetitive signals with
fractional nanosecond (1 0 - 9 second or nsec) risetime.
taking successive samples at a slightly later time at each
recurrence of the pulse under observation, the Type N
reconstructs the pulse on a relatively long time-base.
fications of the Type N include a risetime of 0.6 nsec, cor ­
responding to a maximum
600 m c ; a sensitivity of 10 mv/cm with 2 mv or less noise;
and a dynamic range of ±120 mv minimum linear range
before overloading results.
Accidental overload of ±4 volts d c is permissible.
three-piece cabinet. Photo
The sampling system
By
peci ­
bandpass of approximately
Type P
The Type P Plug-In Unit generates a fast-rise step ­
function test signal of known waveform, simulating the out ­
put of an ideally compensated Type K Unit driven with a
Tektronix Type 107 quare-Wave Generator. The Type P
permits the standardization
amplifier transient response of a
oscilloscope. Risetime of the Type P is approximately 4
nanoseconds when it is used to standardize a Type 540-
eries Oscilloscope. Pulse repetition rate is 240 step func ­
tions per second, with either positive or negative polarity.
tep function amplitude is continuously adjustable between
0 and 3 major graticule divisions.
Type Q
The Type Q Plug-In Unit permits any Tektronix convertible
oscilloscope such as the Type 545A to be operated with
strain gages and other transducers.
for the strain gages and transducers are provided by the
plug-in unit. The unit provides high gain, low noise, and
extremely low drift. Frequency response of the Type Q
Plug-In Unit is DC to 6 kc; risetime is approximately 60
microseconds. train sensitivity is calibrated in 10 steps
from 10 microstrain per major graticule division to 10,000
microstrain per division, and is continuously variable be ­
tween steps.
Type R
The Type R Plug-In Unit is a combined power supply and
pulse generator which is used to measure the high-frequency
characteristics of junction transistors by the pulse-response
method. When the Type R is used in an oscilloscope having
a delay line; delay time, risetime, storage time, and fall ­
time may be displayed simultaneously. A pushbutton switch
connects a front-panel-terminal directly to the input of the
oscilloscope for observing externally derived waveforms.
Pulse risetime of the Type R unit is less than 5 nano ­
seconds, so measurements depend on the risetime of the
oscilloscope used. Pulse amplitudes are in 8 fixed, cali ­
brated steps from .05 to 10 volts, adjustable between steps.
Pulse recurrence frequency is 120 pulses per second.
Type S
The Type Plug-In Unit is designed for use with Tek ­
tronix Wide-Band convertible oscilloscopes.
risetime of the Tektronix 530- eries Oscilloscopes will affect
the ability of the Unit to analyze fast semiconductor
diodes. Using the Type , voltage across a test diode is
displayed as a function of time.
Certain diode parameters, such as junction resistance,
junction capacitance, and the stored charge at the junction,
can be measured readily and reliably from the display.
Performance of a diode in a particular circuit can be pre ­
dicted by analyzing the recovery and "turn-on " character ­
istics. ince it is essentially a means for plotting voltage
across an element while passing constant current through it,
the unit can be used for other applications as well.
Characteristics — Type 545A
of the main-unit vertical
Tektronix convertible
Excitation voltages
The slower
For
1-3