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FAQ > Troubleshooting > Scanner Output - XY2-100

Scanner Output - XY2-100
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If there are any problems with the scanner output, e.g. one axis does not move or a wobbling axis, please have a look at certain signals on the used scan head connector as shown in the table and picture below. All levels are TTL compatible, the period for CLK signals is 2 MHz, for SYNC signals 100 kHz. A second test to verify that proper data is sent via the XY2-100 interface is to test the level of  the used data pins. The pin connection is shown in the respective manual.

All CLK and SYNC signals have to be as displayed below, otherwise please contact SCAPS for further steps.

note

The scan head has to be disconnected from the scanner controller for the measurement, because the goal of this test is to verify if the card sends the signals correctly.

Please ensure the GND connection to avoid noisy signals.

warning

The high level should be at least 4.5 V in respect to the USC GND.

Controller

CLK+

CLK-

SYNC+

SYNC-

USC-1 (25 pin)

Pin 14

Pin 1

Pin 15

Pin 2

USC-2/-3 (25 pin)

Pin 14

Pin 1

Pin 15

Pin 2

USC-2/-3 HEAD2 (26 pin)

Pin 2

Pin 1

Pin 4

Pin 3

Table 51: Scan head signals for test measurement

CLK_SYNC_89CLKSYNC+_1011CLKSYNC-

Figure 38: XY2-100 CLK + SYNC

note

Signal 8 = CLK+
Signal 9 = SYNC+
Signal 10 = CLK-
Signal 11 = SYNC-