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Getting Started 1-7
Chapter 1
No.
Indicator/Switch
Description
1
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 power to installed VXI instruments.
2
Voltages Indicator
Green
- all voltages on the VXI backplane are present. (Does not necessarily indicate
voltages are within VXI specifications.)
Flashing Amber
- one or more voltages is not present or is 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
3
Temp Indicator
Green
- the power supply temperature is acceptable.
Flashing Amber
- the power supply is approaching thermal shutdown.
4
Fan Indicator
Green
- mainframe cooling fan is operating properly.
Flashing Amber
- mainframe cooling fan is not operating.
5
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).
Summary of Contents for 1266
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Page 18: ...1 8 Getting Started Chapter 1...
Page 50: ...3 10 Servicing the Mainframe Chapter 3 Notes...
Page 60: ...A 10 1266 Product Specifications Appendix A Notes...
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