9.
SAMPLE EXERCISES
Exercise
#1:
9
Volt
Battery
Test
Items needed: 9 Volt battery. Signal input leads.
I.
Real-time Recording
DISCUSSION
Monitor the voltage of a 9 Volt battery input into Channel #1
(Keep in mind
that a new 9 Volt battery can have a voltage higher than 9.5 Volts)
. Use a
four grid
chart. Set up the channel so that when there is no signal, the
waveform
trace
will
be
at
the
bottom and when the 9 Volt signal is applied, the
waveform
trace
will
be
near
the
top of the channel. 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 battery voltage is
applied.
ACTION
HOW TO
Default the Dash 4u
[SYS] [SYSTEM SETUP] [SYSTEM DEFAULT] [YES]
Select Chart 1 (4 individual channels)
[MODE] [RUN CHART 1]
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 0 - 11 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 11 Volts.
[SET OFFSET]
Turn encoder wheel until offset is set to +5.5 Volts.
[EXIT]
Input battery voltage into Channel #1
Use the banana jack input connection located on the side of the Dash 4u.
Run
the
chart
[RUN / HALT]
The signal for Channel #1 is now be close to the top.
Stop
the
chart
paper
[RUN / HALT]
Measure
the
battery
voltage
[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 battery voltage
