Specifications

TOS9220/9221 Preface P-1
Preface
About This Manual
This Operation Manual is for the TOS9220 and TOS9221 high-voltage scanners.
In this manual, the TOS9220 or TOS9221 high-voltage scanner is referred to as the
“TOS9220/9221 scanner” or simply the “scanner,” while the TOS9200 or TOS9201
withstanding voltage/insulation resistance tester is referred to as the “TOS9200/
9201 tester” or the “tester proper.” Moreover, the combination of the TOS9200/9201
tester and TOS9220/9221 scanner is referred to as a “test system.”
The manual provides precautions on the handling of the scanner and connections to
the TOS9200/9201 tester and the device under test (DUT). For information on
operations such as setting the scanner output, see the Operation Manual for the
TOS9200/9201 Tester.
Outline and Features
A dedicated option for the TOS9200 and TOS9201 withstanding voltage/insulation
resistance testers, this scanner distributes the test voltage supplied from the tester
proper to multiple test points. It adds the following functions to the TOS9200/9201
tester:
• One scanner extends the output to four channels. A potential of HIGH, LOW, or
OPEN can be set for each channel, and an AC/DC withstanding voltage or insu-
lation resistance test can be conducted at any of four test points.
• A maximum of four scanners can be connected to one TOS9200/9201 tester.
This allows the output to be extended to up to 16 channels.
• The contact between the output of each channel and the corresponding test point
can be checked. (The contact checking function is provided for the TOS9221
scanner only.)
This allows labor-saving, reliable withstanding voltage or insulation resistance test-
ing of electric or electronic equipment or electronic components with multiple test
points.
• This scanner handles high voltages of 5 kV AC/6 kV DC supplied from the
tester proper. Therefore, do not touch the DUT or cables, as electric shock
may result.
Around the DUT, provide full safety measures such as an enclosure to
keep workers away. In addition, to ensure safety, exercise extreme care to
prevent the output of a high voltage due to improper connections and oper-
ations.
WARNING