Specifications

22 System Introduction Chapter 1
Load Cards The Agilent TS-5400 Series test systems provide modular design and
flexible load switching capabilities. Available Agilent load cards (installed
in the Switch/Load Unit) are:
• Agilent E6175A 8-Channel High-Current Load Card
• Agilent E6176A 16-Channel High-Current Load Card
• Agilent E6177A 24-Channel Medium-Current Card
• Agilent E6178A 8-Channel Heavy Duty Load Card
Agilent E6175A
8-Channel High-Current
Load Card
The Agilent E6175A, with current sensing, is intended to be used with loads
mounted inside the switch/load unit. This card provides 8 high-current load
connections. Current sense resistors are supplied, with customer installable
LEM current sense capability as an option. Bridge load configurations are
supported with this card. A nine-inch by four-inch area of sheet metal is left
open on the front of the card to allow room for mounting loads. The card
requires two slots in the Agilent E6198 Switch/Load Unit.
Agilent E6176A
16-Channel High-Current
Load Card
The Agilent E6176A provides 16 externally mounted loads. The single-slot
design offers high load density for high-current loads where LEM modules
and bridge drive configurations are not required. The customer determines
where and how the loads are mounted externally. Two load connectors, J1
and J2, are used with loads one through eight on J1 and the remainder on J2.
The flyback protection is connected from both the normally open (NO) and
normally closed (NC) power switch connections.
Agilent E6177A
24-Channel
Medium-Current Load
Card
The Agilent E6177A is used with loads mounted inside the Switch/Load
Unit. A nine-inch by four-inch area of sheet metal is left open on the front
of the card to allow room for mounting loads. The card is one slot wide. Each
channel is capable of up to two amperes continuous carry current.
There are a variety of ways the pull-up/pull-down capability of the card may
be used. One example is to pull input pins on the module to desired test states
and test for the desired result. Another common use would be to control an
attenuator by switching in loads.
Agilent E6178A
8-Channel Heavy Duty
Load Card
The Agilent E6178A provides current-carrying capability of up to 30 amps
per channel. Loads are mounted externally and special power supply and
load wiring cables are used. The card requires two slots in the Agilent E6198
Switch/Load Unit and special power supply cabling.
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