
3 Hardware Components Tester Electronics
40 System Reference, January 2001
Components Inside a 128 Pins Module
Device Power Supply The device power supplies (DPS) reside inside the
testhead, which results in short cable connections and
therefore low inductance. This is especially important for
devices with high power consumption and high data rates.
One DPS Board can reside inside a 128 pins module. A
DPS board contains 4 DPS channels.
A power supply channel is connected to the DUT’s power
supply pin (Vcc, see figure below). For multi-site testing
you connect the different power supply channels to the
power supply pins of the different sites.
Figure 17 DPS Connection
For detailed information, refer to Chapter 6 “Device
PowerSupply” on page 135.
DPS Board 4 (DPS13...DPS16)
DPS Board 3 (DPS9...DPS12)
DPS Board 2 (DPS5...DPS8)
Vcc
DPS Board 1 (DPS1...DPS4)
DPS Channel 1
DUT
Load Board
To Pin Electronics on Channel Modu le
DPS Control
To Backplane Bu s
DPS Channel 2
DPS Channel 3
DPS Channel 4
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