pyfastservo adc: print 100 times to check test pattern

fast-servo/pyfastservo/adc.py

@@ -155,7 +155,10 @@ def configure_ltc2195():
         # Performing Word Align
         perform_bitslip()
         find_edge()
-        print_adc_channels()
+        
+        # Printing it once is not enough to check whether the alignment is correct.
+        for i in range(100):
+            print_adc_channels()
 
         main_adc_test_mode(spi, False)
         verify_adc_registers(spi, {0x02: 0x11})  # Verify test mode is off