ADLINK PCI-8164 - Manual (Page 46)

34 Installation
2.16 Jumper setting for pulse output (PCI-8164 only)
J1 - J8 sets the type of pulse output signals (DIR and OUT). The
output signal type may either be differential line driver or open col-
lector output. Refer to section 3.1 for detailed jumper settings. The
default setting is differential line driver mode.