Section 11: Model 3732 quad 4x28 reed relay matrix card
Series 3700A Switch and Control Cards Reference Manual
11-38
3700AS-909-01 Rev. B / December 2011
J4 D-sub connector pin assignments for the dual 4x28 2-pole configuration:
Table 12: Model 3732 J4 D-sub connector pin assignments dual 4x28