DS335 Synthesized Function Generator

Getting Started 1-1
Getting Started
Introduction
Data Entry
CW Function Generation
This section is designed to familiarize you with the operation of the DS335
Synthesized Function Generator. The DS335 is a powerful, flexible
generator capable of producing both continuous and swept waveforms of
exceptional purity and resolution. The DS335 is also relatively simple to use,
and the following examples will lead you step-by-step through some typical
uses.
Setting the DS335's operational parameters is done by pressing the key with
the desired parameter's name on it (FREQ, for example, to set the
frequency). The current value will be displayed. Some of the parameters are
labeled above the keys in light gray. To display those values first press the
SHIFT key and then the labeled key ([SHIFT][STOP FREQ], for example, to
display the type of waveform sweep set). Values are changed by the DATA
ENTRY keys. To directly enter a value simply type the new value using the
keypad and complete the entry by hitting one of the UNITS keys. If the value
has no particular units any of the UNITS keys may be used, otherwise select
the appropriate units key. If an error is made, pressing the corresponding
function key will backspace the cursor. If the key is pressed repeatedly the
display will eventually show the previous value. For example, if a new
frequency is being entered and the wrong numeric key is pressed, then
pressing the FREQ key will backspace the cursor. If the FREQ key is
pressed until the new entry is erased, then the last valid frequency value will
be displayed. The current parameter value may also be incremented or
decremented using the UP and DOWN ARROW keys. Pressing the UP
ARROW key will increment the flashing digit value by one, while pressing the
DOWN ARROW key will decrement the flashing digit value by one. If the
parameter value cannot be incremented or decremented, the DS335 will
beep and display an error message. Pressing [SHIFT][UP ARROW] or
[SHIFT][DOWN ARROW] changes the position of the blinking digit.
Our first example demonstrates a CW waveform using the DS335's data
entry functions. Connect the front panel FUNCTION output to an
oscilloscope, terminating the output into 50 ohms. Turn the DS335 on and
wait until the message "TEST PASS" is displayed (if the self tests fail, refer to
TROUBLESHOOTING section of the manual).
1) Press [SHIFT][+/-]. This recalls the DS335's default settings.
2) Press [AMPL]. Then press [5][Vpp]. Displays the amplitude and sets it to 5 Vpp. The scope
should show a 5 Vpp 1 MHz sine wave.
3) Press [FUNC DOWN ARROW] twice. The function should change to a square wave and then a
triangle wave. The DS335 automatically performs a
frequency adjustment to match the maximum triangle
frequency (10kHz).
4) Press [FREQ] and then [1][kHz]. Displays the frequency and sets it to 1 kHz. The scope
should now display a 1 kHz triangle wave.
5) Press [UP ARROW]. The frequency will increment to 1.0001 kHz. The flashing
digit indicates a step size of 0.1 Hz.
DS335 Synthesized Function Generator