Service manual

E8408A Product Specifications 57
Appendix A
General VXI
Specifications
Monitor
Specifications
Backplane
Specifications
• Automatic daisy-chain jumpering for BUS GRANT and IACK signals.
• Full differential distribution of CLK10.
• ACFAIL* and SYSRESET* in full compliance with the VMEbus and
VXIbus Specifications.
• Surface mount construction and no sockets for maximum reliability.
Category Specifications
VXI Device Type: Mainframe
Data Transfer Bus: All per VXIbus Specification, Rev 1.4
Size: C-Size
Slots: 4 available
Connectors: P1/P2
Shared Memory: n/a
VXI Buses: per VXIbus Spec, Rev 1.4
Interface Description
Power Switch Stdby - AC power is applied to the mainframe, but not to installed VXI instruments.
On - AC power applied to the mainframe, and DC to installed VXI instruments.
Voltages Indicator Green - all voltages on the VXI backplane are present. (Does not necessarily indicate
that voltages are within the VXI specification.)
Flashing Amber - one or more voltages is missing or incorrect. The backplane
voltages and allowed variations are listed below:
Voltage
Allowed Variation
+5V +4.875V to +5.125V
+12V +11.64V to +12.6V
-12V -12.6V to -11.64V
+24V +23.28V to +25.2V
-24V -25.2V to -23.28V
-5.2V -5.46V to -5.044V
-2V -2.1V to -1.9V
Temp Indicator Green - the power supply temperature is acceptable.
Flashing Amber - the power supply is approaching thermal shutdown.
Fan Indicator Green - mainframe cooling fan is operating properly.
Flashing Amber - mainframe cooling fan is not operating.
Fan Speed Switch Full - the mainframe cooling fan is operating at full speed.
Var(iable) - the mainframe cooling fan is providing adequate cooling (default setting).