GxT Ferret 91 2-Channel Labscope - Manual (Page 21)

21
Electrical Tests
Memory
There are two memory locations in the LabScope that
can be used to store acquired waveforms, setups, and
other information relating to the current test. These
memory locations can also be loaded with test data
downloaded from the optional WaveFile AutoPro™
software package.
Storing Test Data
To store a displayed waveform and related test data, press
the HOLD button, then press SELECT. The Labscope
asks which memory location you want to send the
information to. Choose either MEMORY 1 or MEMORY
2. If the memory location you are saving to contains previously saved data, that data
will be overwritten without further warning. After the data is saved, the scope returns to
the last setup and acquisition resumes.
The Labscope saves the current CH1 waveform and CH2 waveform if it is displayed. In
addition is saves the current instrument setup. Test title and help information form the
most recent factory setup is also saved. All of this data is saved together into a single
memory location. If the most recent factory setup was MANUAL SETUP or STANDARD
SETUP, the test title saved is the name of the memory location (i.e., MEMORY 1) and
no help is saved.
Audio Speaker Test
Connect COM probe to the negative speaker circuit.
Connect the CH1 probe to the positive speaker circuit.
Turn the radio on and watch the DSO display. Amplitude,
frequency, and shape will all vary according to the sound
being produced. Frequency ranges from 16Hz to 20,000
Hz are normally detectable by the human ear.
12 V DC Switches
Connect COM probe to the switch’s or accessory’s ground
circuit, engine block, or negative battery post. Connect
the CH1 probe to the switch’s or accessory’s output circuit.
Make sure power is switched on in the circuit so that the
switch, device or circuit is operational. The waveform
should stay in a predetermined voltage range (amplitude)
for a given condition.