32
Test Header Jumper Positions
The Electronic Load contains two test headers (connectors TP201 and TP301) with jumper positions for signature analysis
testing and for other functions as described below. The test headers are located on the main circuit board (see Figure 6-3)
and are accessible when the top cover is removed.
Primary Test
Header TP201
Pins Description
1 and 2 + 5V (primary interface) test points.
3 and 4 With jumper RTP201 installed between these pins, the primary interface
microprocessor is placed in the S.A. mode. Removing RTP201 takes the
microprocessor out of the S.A. mode.
5 and 6 With jumper RTP201 installed between these pins, the primary interface
microprocessor will ignore calibration commands, providing security against
unauthorized calibration. With RTP201 removed, the microprocessor will respond to
calibration commands.
7 and 8* S.A. gate test points (normal operating/storage position for RTP201).
9 thru 16
Test points for the chip select signals
CSP0 through CSP7 .
*As shipped from the factory, jumper RTP201 is installed between TP201 pins 7 and 8. Both of these pins are connected to
the primary S.A. gate signal, which is used as the start/stop signal when taking signatures during primary S.A. testing. See
"Test Setup for S. A.''
Secondary
Test Header
TP301 Pins
Description
1 and 2 With jumper RTP301 installed between these pins, the secondary microprocessor is
placed in the S.A. mode. Removing RTP301 takes the microprocessor out of the S.A.
mode.
3 and 4* S.A. gate test points (normal operating/storage position for RTP301).
5 and 7 With RTP301 installed between these pins, the secondary microprocessor will skip
selftest at power-on. With RTP301 removed, the selftest will be performed.
6 Connected to secondary common.
8 + 5V (secondary) test point.
* As shipped from the factory, jumper RTP301 is installed between pins 3 and 4 . Both of these pins are connected to the
secondary S.A. gate signal, which is used as the start/stop signal when taking signatures during secondary S.A. testing. See
"Test Setup for S. A.".
To Next Page
Loading...
Need help?
General
