4-10 TS-5020 Automotive Electronics Functional Test System Wiring Guide and Hardware Reference
4 System Interconnects
The system integrator may configure various uncommitted TC
connector pin groups for use as required for their specific
application. There are two connectors on the back of the
ExpressConnect Printed Circuit Assembly (PCA) that map to
the TC connector for this purpose:
• Spare Instrument (SpareInst) pins may be accessed
through the System connector. These pins work well for
single channel interconnect, where a simple BNC or
Banana plug connector can be used to route the signal
(see cables at end of manual). These pins are available for
use as needed on connectors TC3 and above (note that
these pins are reserved for the DAC & Serial on TC1 &
TC2). The System Connector located on the
ExpressConnect PCA and is labeled “SYSCON” on the full
sized ExpressConnect PCA or “SYSTEM” on the low
profile ExpressConnect PCA. See
Figure 4-9 to Figure 4-12
for details of the specific rows and how they map to the
TC connector.
• User Access (UserAccess) pins may be accessed through the
Configuration connector. These pins work well for
multi-channel instruments (such as digitizers or DAC channels),
or for multi-channel serial access (such as for a flash
programming station). These pins are available for use as
needed on all of the TC connectors. The Configuration
connector located on the ExpressConnect PCA and is labeled
“CONFIG”. Row32A-Row1A map in to
UserAccess1-UserAccess32 respectively.
These TC connector pins are intended for low current access
and should not be used above 500mA.
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