ASTRO-MED Dash 4u Manual de inicio rápido - Página 11
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Imprimir páginaI. Real-time Recording
DISCUSSION
ACTION
Default the Dash 4u
Create a chart with one signal
Select Chart with Channel 1
Set speed to 5 mm/sec
Stop the chart paper
Set Channel #1 to be +/- 4 Volts FS
Input sine wave into Channel #1
Run the chart
Stop the chart paper
Measure the sine wave signal
using the color display
Remove sine wave signal
Exercise #2: Sine Wave Generator Test
Items needed: Waveform Signal Generator. Signal input leads.
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.
[SYS] [SYSTEM SETUP] [SYSTEM DEFAULT] [YES]
[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 >>]
[MODE] [RUN CHART 4]
[5] [SEC] Common speeds have dedicated keys on front panel of Dash 4u.
[RUN / HALT]
[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]
Put +/- 2 V sine wave, 1 kHz, into the banana jack input connection located on
the side of the Dash 4u.
[RUN / HALT] The signal for Channel #1 should be
[RUN / HALT]
[FREEZE DISPLAY] Select [CURSOR A] and turn the encoder wheel to
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]
HOW TO
½
of the full scale chart.