Keithley-KTTI-GPIB-Communication-Digital-I-O-Accessory-User-Installable-Keithley-KTTI-GPIB-p-The-Keithley-KTTI-GPIB-Communication-and-Digital-I-O-accessory-board-is-a-user-installable-interface-for-the-DAQ6510-The-GPIB-interface-includes-six-digital-I-O-ports-for-direct-instrument-instrument-synchronization-and-communication-p-p-p-p-This-GPIB-IEEE-488-1-compliant-add-on-provides-fast-consistent-triggering-with-low-trigger-latency-It-can-sustain-a-consistent-transfer-rate-whilst-al