Applications; Default Settings; Simple Main Generator Operation; Pulse Trains - Metrix GX1010 Notice De Fonctionnement

6.

APPLICATIONS

Some examples of the many waveforms that can be generated by this instrument are given
in the following sections. To make the examples a useful means of gaining familiarity with
the generator, numeric values have been chosen which are convenient for displaying the
waveforms on an oscilloscope.
To work through the examples connect MAIN OUT from the generator to the input of the
'scope through a 50Ω terminator.
6.1.

Default Settings

There are many ways of configuring the waveform, trigger or modulation settings which
might result in the instrument appearing not to work. Under these circumstances the
simplest means of restoring operation is to recall the default settings by pressing RECALL,
0, CONFIRM, followed by OUTPUT ON to turn the Main Out on.
6.2.

Simple Main Generator Operation

With the Main menu displayed, press
and select SINE on the FUNCTION keys. If the OUTPUT lamp is not lit, press ON to turn it
on. Set the 'scope to 1V/div, the timebase to 200µs/div, select DC coupling and observe
the waveform.
Select the other waveforms in turn (using the FUNCTION keys) and observe the
differences between SQUAREWAVE and PULSES; the 'scope trigger may need resetting
when changing between waveshapes. Also select STAIR and ARBitrary waveshapes to
view the default settings.
With SINE or TRIANGLE selected again, move the flashing edit cursor into the numeric
field of the EMF value using the FIELD keys. Using the DIGIT keys move the cursor
through the numeric field to the digit representing
amplitude with the rotary control. Using the keyboard enter 1, 0, V to restore the output
level to 10Vpp.
Move the cursor to the Symmetry field with the SYM key, and observe the effect of
adjusting symmetry with the rotary control. Restore 50% symmetry by entering 5, 0, %,
from the keyboard.
6.3.

Pulse Trains

To demonstrate simple pulse waveforms for digital applications, select +PULSE and press:
This setting will give the standard TTL levels of 2·4V and 0·4V (into 50Ω) as a 1:1 duty
cycle 1kHz pulse train.
Move the cursor to the Symmetry field with the SYM key and adjust the symmetry with the
rotary control to create pulses with different mark : space ratios.
GX1010
FREQ, 1, kHz
EMF, 1, 0, V
EMF, 4, V
·
DC OFFSET, 0, , 8, V
FREQ, 1, kHz.
·
1V increments, then adjust the
II - 53