"ELEMENT DE RETARD (LOGIQUE)" is printed at the extraction end of the module on the component side. There are six large black rectangular components with "3 GND 1 IN" printed on the left, and "OUT 2" printed on the right.
Manufacturer
Xerox Data Systems, Inc. (XDS)
Identifying Numbers
Model number
DT16
Printed in white at extraction end on component side.
Other number
28172
Printed in white at the extraction end of the component side