DH Instruments MFC SWITCHBOX, User Manual

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MFC SWITCHBOX USER’S MANUAL
© 1997-2008 DH Instruments, a Fluke Company Page 2
1.2 LOCATION OF THE COMPONENTS
1.2.1 FRONT PANEL
1. Connection
point for DUT 2
2. Connection
point for DUT 4
3. Connection
point for DUT 5
4. Connection
point for DUT 3
5. Connection
point for DUT 1
Figure 1 . Front Panel
1.2.2 REAR PANEL
1. External
Drivers
Connection
2. Fan
3. Power
Entry
4. Product Label
5. Electrical
Connection
Figure 2. Rear Panel
1.3 1.3 SUBASSEMBLY DESCRIPTION
1.3.1 POWER SUPPLY
Powers the electronics inside the MFC Switchbox and provides continuous power to up to
five connected DUTs. The switching power supply pr5 volts at 0.5 amps and +15
volts at 4 amps. This 15 volt signal is converted via a DC-to-DC converter to -15 volts at 1.3
amps (leaving approximately 2 amps for the +15 volt signal). The enclosure is cooled by
active air circulation using a fan on the rear panel.
1.3.2 RELAY BOARD
Provides the control and signal switching required to connect (one at a time) up to five DUTs
to the molbox’s single MFC port.