Tektronix 305 DMM User Manual (English)

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H U JU d llV IC n i AINU DM5IU U lO rL M T O

To verify the operation and accuracy of the 305, con

firm the following checks and adjustments.

OSCILLOSCOPE DISPLAY

Before operating the 305 oscilloscope, preset the con-

trols as listed below:

Display Mode CHI

VOLTS/DIV

10m

VOLTS/DIV CAL

(Variable) Detent

POSITION (Vertical)

Midrange

AC/DC (Coupling) DC

INVERT

Off (in)

SEC/DIV

.5m

SEC/DIV CAL

(Variable)

Detent

PULL: X I0 MAG

Off (in)

POSITION (Horizontal)

Midrange

Source

CHI (in)

AC/DC (Trigger coupling) DC

AUTO/NORM (Mode) AUTOmatic (in)

Slope

+ (out)

TRIGGER LEVEL

Midrange

SCOPE POWER

On (in)

Intensity

Demonstrate normal intensity operation as follows:

1. Rotate the INTENSITY control between its max

imum clockwise and counterclockwise positions. The dis

play should vary from full intensity to no display.

2. Reset the INTENSITY control to a comfortable

viewing level.

CAUTION <

To protect the crt phosphor, do not leave the

INTENSITY control set any higher than

necessary to provide a satisfactory display.

Focus and Astigmatism

Figure 11 shows the location of external operator

adjustments.

1. Adjust FOCUS for optimum crt trace definition.

2. In conjunction with FOCUS adjustment, obtain

optimum definition of the crt trace with the ASTIGmatism

adjustment.

REV A SEP 1979

305 Operators

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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