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Installation and Configuration
User Signals
26
Operating Manual for GPIB for XPD Series Power Supply
Figure 2.4
User Signals J21 Connector
J21-1 External TTL shutdown input signal
(See “TTL Shutdown”)
J21-2 Polarity signal, open collector
(asserted by VSET -x)
J21-3 Isolation signal, open collector
(asserted by OUT OFF)
J21-4 Fault signal, open collector
(asserted when bit set in fault register)
J21-5 External Vcc, 15V maximum
(supplied by connecting and operating an external source)
J21-6 External ground and shutdown return
(supplied by connecting and operating an external source)
J21-7 Open collector user signal
(asserted by AUXA ON)
J21-8 Open collector user signal
(asserted by AUXB ON)
J21