User manual

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72-9355 / 72-9360 / 72-9365 / User Manual
1. Check the unit for possible shipping damages
If the package carton or foam plastic protective lining is seriously damaged, please contact
your Tenma dealer.
2. Check the accessories
A checklist of accessories that come with your oscilloscope is provided in the section
“Accessories” of this user manual. Please check any missing items against this list.
If any item is missing or damaged, please contact your Tenma dealer.
3. Thorough inspection of the entire unit
If the exterior of the unit is damaged, or it is not operating normally, or it fails to pass the
performance test, please contact your Tenma dealer.
In the event of any shipping damages, please retain the packaging and notify your Tenma
dealer. We will be glad to arrange maintenance or repair.
3. Functional Check
Carry out a quick functional check in the following steps to make sure your oscilloscope is
operating normally.
1. Power on the unit
You can select from two power supply methods : internal battery power or external DC
adaptor power. Power supply voltage of the DC adaptor is grid voltage. After connecting
to power, start the self calibration process by pressing the [USER] button then [F3]. This
will ensure optimal performance.
2. Accessing signals
Your oscilloscope has dual input channels. Please access signals in the following steps :
c Connect the probe of the digital storage oscilloscope to the red input terminal (Channel
A), and set the attenuation switch of the probe to 10X.
Figure 1-3 Setting the probe attenuation switch