Tektronix 305 DMM User Manual

CONTROLS AND CONNECTORS
Controls and connectors necessary for proper operation
of the instrument are located on the front, side, and rear
cabinet panels. To make full use of the capabilities o f this
instrument, the operator should be familiar with the func
tion and use of each external control and connector. A
brief description and use of each external control and con
nector is given herein
POWER SOURCE AND CONNECTORS
WARNING |
Change o f ac input voltage must be accom
plished by qualified service personnel only.
1. Power Source Selector switch-Three position switch
provides operator selection of ac line voltage, external dc
voltage or battery operation. The ac position, in conjunc
tion with the AC Input Voltage Selector switch, allows the
305 to be operated over a range of ac line voltages. Power
Source Selector switch also provides operator selection of
a Full or Trickle charge rate to internal batteries (Figure 21.
2. AC Input Voltage Selector switch-In conjuction
with the Power Source Selector switch, allows the instru
ment to be operated from 115 or 230 nominal ac line
voltage (Figure 2).
Figure 2. View o f rear cover.
6 305 Operators
REV A SEP 1979

Tektronix 305 DMM Specifications

General

DC Voltage Ranges	200 mV, 2 V, 20 V, 200 V, 1000 V
Diode Test	Yes
Continuity Test	Yes
Input Impedance	10 MΩ
Power Supply	9 V battery
Type	Digital Multimeter
Display	3.5 digit LCD
AC Voltage Ranges	200 V, 750 V
DC Current Ranges	20 mA, 200 mA, 10 A
Resistance Ranges	200 Ω, 2 kΩ, 20 kΩ, 200 kΩ, 2 MΩ

Summary

GENERAL INFORMATION

SAFETY INFORMATION

Guidelines to ensure safe operation and protect the operator.

OPERATING VOLTAGE

Information on power sources for the instrument's operation.

AC POWER SOURCE OPERATION

INTERNAL BATTERY OPERATION

CONTROLS AND CONNECTORS

POWER SOURCE AND CONNECTORS

APPLICATION AND MEASUREMENTS

DC VOLTAGE MEASUREMENT

Procedures for measuring DC voltage using the digital multimeter.

AC VOLTAGE MEASUREMENT

RESISTANCE MEASUREMENT

INSTANTANEOUS AMPLITUDE MEASUREMENT-DC

Measuring the amplitude of any point on a waveform with respect to ground.

PEAK-TO-PEAK AMPLITUDE MEASUREMENT-AC

Measuring the peak-to-peak amplitude of a signal using the oscilloscope.

VOLTAGE COMPARISON MEASUREMENTS

TIME DURATION AND FREQUENCY MEASUREMENT

Measuring time duration and calculating frequency of signals.

TIME DIFFERENCE MEASUREMENT

Measuring time difference between two pulse waveforms from different sources.

DUAL TRACE PHASE DIFFERENCE MEASUREMENTS

Comparing phase between two signals of the same frequency.

HIGH RESOLUTION PHASE DIFFERENCE MEASUREMENT

Improving accuracy for phase differences less than 45 degrees.

RISE TIME MEASUREMENT

Measuring the time it takes for a signal to rise from 10% to 90%.

COMMON MODE REJECTION

SPECIFICATION

ELECTRICAL CHARACTERISTICS

Performance requirements for electrical characteristics.