Using Load Cards and Loads 5
E6198B Switch/Load Unit User Manual 5-7
Using the Agilent E6175A 8-Channel Load Card
The Agilent E6175A 8-channel high-current load card, with
current sensing, is intended to be used with loads mounted
inside the Switch/Load Unit. This card provides great flexibility,
low series resistance, and high current-carrying capability.
Figure 5-3 shows a block diagram of the Agilent E6175A
8-Channel Load Card. The card layout is shown in Figure 5-4.
• The card is two slots wide (4 cm./1.6 inches) to allow
mounting of larger loads. Due to its high current capability, it
is recommended that you mount it on the left side (slots 1-4)
of the Agilent E6198B Switch/Load Unit enclosure, closest to
the incoming power buses. “Card Location
Recommendations"
• The card type is 01
h
. “Load Card Type and Configuration ID".
• The factory default is to load a 0.05Ω, 0.1% Isense resistor in
each channel. If you prefer to use a current transducer, you
must
remove the Isense resistor and add the current
transducer described in “Selecting a Current-Sense Method".
• A nine-inch by four-inch area of sheet metal is left open on
the front of the card for mounting loads. You provide the load
mounting hardware, drilling holes in the sheet metal as
needed. “Connecting Loads".
• Each channel is capable of up to 7.5 amperes continuous
carry current or up to 15 amperes with a two percent duty
cycle.
• There is a slow blow fuse on each channel to protect the card
traces against extended high current operation.
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