Tenma 72-5015 Quick Manual

Tenma 72-5015 Function Generator

Quick Guide

The Tenma 72-5015 Function generator is a multiple output repetitive function generator.
It is capable producing a sine, triangle or square wave with an adjustable frequency and
amplitude, as well as a digital square wave output. The waveform symmetry and base
amplitude voltage can be modified, as well as setting the frequency to sweep between
two 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 display indicates the frequency and the lit indicator below the display indicates the
frequency range. The EXT button, when depressed, switches the display into counter
mode. Leaving this button out allows the display to indicate the frequency that the
generator is set at. There is also an attenuation button to the right of the EXT button.
This allows the incoming signal to be attenuated, or reduced by 20dB if the signal
amplitude coming in is too large.

Frequency setting:

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

select the range of the
signal to be generated.

These buttons are used in conjunction with the vernier knob to select the desired
frequency.

This is a continuously adjustable knob that allows the
adjustment of the frequency between 0.2 and 2 of the selected
frequency range.

Waveform Shape:

The waveform shape is selected by three buttons
located at the upper right hand corner.
Pressing one of these three 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
other.) Leaving the knob pressed in disables this function

h

.

he DUTY function will allow you to cause the output

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wave to be non-symmetric. A
sawtooth in either direction, or anyplace in between the two extremes. Leaving the k

s an example the triangle wave can be skewed to be a

nob

fully counterclockwise in the “CAL” position disables this function.

mplitude Control and Output:

A

he AMPLITUDE vernier adjusts

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the peak to peak value of the output
signal within the limits. Selecting
the -20dB or -40dB button will low
the output range allowing lower
to peak values. Pressing both at th

er

peak

e
same time will provide a -60dB
attenuation.
The MAIN OUTPU
the location that the signal is actuall

T connector is

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generated on. This is where you will