Compressed Air and Vacuum Requirements 7
Site Preparation 7-5
Vacuum Requirements
The i3070 uses vacuum (with vacuum-actuated test fixtures) to pull the board
under test down onto test probes. Because of the different sizes of test systems,
test fixtures, and the variety of boards that can be tested, vacuum requirements can
vary significantly.
Keysight recommends that you work with a qualified vendor of vacuum pumps who
can give you advice based on your requirements.
Vacuum Recommendations and Guidelines
Table 7-2 shows the vacuum recommendations for a typical system.
Vacuum Guidelines
Keep these additional guidelines in mind as you design your system:
• Use the largest diameter of pipe practical from the vacuum pump to the
testhead area. This diminishes vacuum loss due to friction in the piping
(especially at bends), and provides a demand reservoir.
• Keysight also recommends that a filter be installed between the vacuum supply
and the testhead to prevent dirt or contaminants from being sucked through
the test fixture into the vacuum supply.
• Pressure meters, flow meter, and filters are optional but recommended.
• A 2-inch vacuum hose should be used.
Table 7-2 Vacuum recommendations for the system
Description Measurement
Recommended Flow Rate of Pump 18.9 l/s at STP (40 SCFM) Use this value as a guideline.
Vacuum specification is dependent on the fixture, not
the testhead. Keysight has found this specification will
pull down most fixtures.
Pressure Performance 50 kPa (7.2 psi)
Vacuum Control Ports available for
controlling external vacuum valves
4 vacuum control ports: switched 24 volts DC,
750 milliamps maximum per port
Vacuum pumps installed for the tester should be installed
outside or vented outside in order to prevent the vacuum
pump from exhausting oil-bearing air or carbon fragments in
areas where there are people.
To Next Page
Loading...
Need help?
General
