Exercise #2: Sine Wave Generator Test
Items needed: Waveform Signal Generator. Signal input leads.
I.
Real-time Recording
DISCUSSION
Input a +/- 2 Volt sine wave, 1 kHz into Channel #1. Use a one grid chart.
Set up the channel so that when there is no signal, the waveform trace will be at
the center. When the sine wave signal is applied, the waveform trace will be
shown symmetrically within the grid. The signal will be seen on the color
display as well as on the chart paper. Next, a data capture will be set up to
collect data when the sine wave signal is applied.
ACTION
HOW TO
Default
the
Dash
4u
[SYS] [SYSTEM SETUP] [SYSTEM DEFAULT] [YES]
Create a chart with one signal
[SYS] [AUTO-CHART SETUP] [NEXT >>]
To begin auto-chart.
Keep chart format to individual
[NEXT >>]
. Turn encoder wheel so that
number of channels is 1
[NEXT >>]
.
Keep chart with channel text
[NEXT >>]
.
Turn encoder wheel to Chart 4
[NEXT >>]
[NEXT >>]
Select Chart with Channel 1
[MODE] [RUN CHART 4]
Set speed to 5 mm/sec
[5] [SEC]
Common speeds have dedicated keys on front panel of Dash 4u.
Stop
the
chart
paper
[RUN / HALT]
Set Channel #1 to be +/- 4 Volts FS
[AMP 1]
[ADVANCED]
[CHANGE AMP TYPE…]
The Dash 4u has five amplifier types.
[SET TO SINGLE-ENDED]
Select the single-ended amplifier type.
[EXIT] [SET TO 40 V]
Set the attenuator range to 40 Volts.
[EXIT] [SET RANGE]
Turn encoder wheel until range is set to 8 Volts.
[SET OFFSET]
Turn encoder wheel until offset is set to 0 Volts.
[EXIT]
Input sine wave into Channel #1
Put +/- 2 V sine wave, 1 kHz, into the banana jack input connection located on
the side of the Dash 4u.
Run
the
chart
[RUN / HALT]
The signal for Channel #1 should be
½
of the full scale chart.
Stop
the
chart
paper
[RUN / HALT]
Measure the sine wave signal
[FREEZE DISPLAY]
Select
[CURSOR A]
and turn the encoder wheel to
using the color display
move cursor A. Observe the voltage readings shown at the bottom of the
display. Experiment with
[CURSOR B]
and then
[CURSORS A & B]
.
Amplitude
and
time
measurements between the cursors are given on the bottom
of the display.
When finished, run the display
[RUN DISPLAY]
Remove sine wave signal
