Tektronix 221 Instruction Manual page 61

ITEM
Oscilloscope
Voltmeter nonloading digital m u lti­
meter
The voltages and waveforms shown on this diagram were obtained by using the following test set-up and
test equipment.
Voltage Measurements
Set the fro n t and side panel controls for a vertically centered trace (TRIGGER/SLOPE set to AUTO
PRESET).
Input coupling switch to ground (GND).
Voltmeter common is connected to the instrument common.
Waveform Measurements
The 221 Oscilloscope under test: The vertical deflection is set to 1 V w ith a four volt square wave
connected to the probe tip , and the SEC/DIV switch is set for 0.5 m. The TRIGGER LEVEL/SLOPE set to
AUTO PRESET w ith a triggered display. Any change in the set-up w ill be noted on the photograph
(HORIZ-MAG 10X).
Test Oscilloscope
The test oscilloscope is internally triggered; the vertical deflection factor and horizontal timing is indicated
on the waveform photograph. The vertical input is AC coupled, so repositioning of the display is not necessary
after checking difference test points. The tolerance of the voltages and waveforms is 20%.
VOLTAG ES AND WAVEFORMS
RECOMMENDED TEST EQUIPMENT
SPECIFICATIONS
Frequency response 5 megahertz
Input impedance: 10 M£2
Range: 0 - 1 kV
RECOMMENDED TYPE
Tektronix 221 or equivalent.
Tektronix 7D13 Digital multim eter,
test oscilloscope w ith readout is
required.
Fairchild Model 7050 or equivalent.