Tenma 72-7210 Quick Manual

Tenma 72-7210 Function Generator

Quick Guide

The Tenma 72-7210 Function generator is a single output repetitive function generator.
It is capable producing a sine, triangle or square wave with an adjustable frequency and
amplitude. The waveform symmetry and base amplitude voltage can be modified, as
well as setting the frequency up to sweep between to limits at an adjustable rate.

Display and Display mode:

The frequency output display can be set to display the output frequency of the function
generator or can be used to measure an external digital frequency.

The ON button switches the display to the external counter
mode. With the button left out, the display will show the value
of the internal frequency generator.

The display indicates the frequency and the lit indicator to the right of the display
indicates the frequency range.

Frequency setting:

The output frequency is controlled by a combination of two controls. The range buttons

switch the range of the output, rotating through setting from (1-

560) mHz [.001 to .560 Hz] up through (3.6 – 6.2) MHz. Some
ranges have multiple settings. An example of this is the KHz
range selection has 3 selections, each increasing a decade.

The frequency value within the selected range is adjusted by the use of the vernier knob

located below the display. This is a continuously adjustable knob
that allows the adjustment of the frequency anywhere within the
selected range.

Waveform Shape:

The waveform shape is select

ed by three buttons located at the bottom of the face.

Pressing one of these th

ree buttons allows you to select
either a sine wave, triangle wave or square wave.
In addition to the basic wave shape, it is possible to

modify
the waveform by using one or more of the two OFFSET
and SYMMETRY functions.

he OFFSET function allows the user to adjust where the

T
zero crossing point of the repetitive waveform is. This can
be adjusted either positive or negative. (note that this
control and the amplitude control will interact with eac

h
other.) Leaving the button below the control out will
disable this function.

w e output wave to be non-symmetric.

ill allow you to cause thThe SYMMETRY function

As an example the triangle wave can be skewed to be a sawtooth in either direction, or
anyplace in between the two extremes. Leaving the button below the control out disables
this function.

mplitude Control and Output:

A

he AMPLITUDE vernier adjusts the

T
peak to peak value of the output signal
within the limits. Selecting the -20dB
button will lower the output range
allowing lower peak to peak values.
The OUTPUT connector is the locatio

n

that the signal is actually generated on.

This is where you will connect to the unit to obta

in your useable signal.

weep Mode:

S

addition to the basic signal, this unit has the ability to “sweep” the base frequency

In

through some range. The SWEEP
controls are the portion that controls
Under normal operation the two butto
are left out, disabling this function. W

this.

ns

hen

pressed, the ON button starts the sweep