Controls And Indicators - HP 654 A Series Operating Manual
Analog programmable dc power supplies
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Also See for 654 A Series:
- Operating and service manual (77 pages) ,
- Operating and service manual (82 pages)
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Control or
Indicator
Table 5-1. Front Panel Controls and Indicators (continued)
Function or Indication
__4
FUNCTION Keys (continued)
(Protect)
When the Prot annunciator comes on, press [Protect) to see which protection circuit caused the
power supply to shut down. Response can be OC (overcurrent), OT (overtemperature), or OV
_
(overvoltage). If no protection circuit has tripped, the display will show dashes (-)
LProt Clear)
Press this key to reset the protection circuit. If the condition that caused the circuit to trip has
been removed, the Prot annunciator will go off.
(OCQ
Press to enable or disable the power supply OOP trip circuit. This key toggles between the two
states.
(03
Press to display the OV trip voltage setting. After pressing [OV), you may use the ENTRY keys to
____________ cheuige the value._
__
_
5
ENTRY Keys___
(jyoltase)
Press to increment the output voltage in the CV mode, or the voltage setting after you have
pressed the [Voltage) key.^
LiVoltage)
Press to decrement the output voltage in the CV mode, or the voltage setting after you have
pressed the [Voltage) key.^
LLCurrent)
Press to increment the output current in the CC mode, or the current setting after you have
pressed the [Current) key.^
LlCurrent)
Press to decrement the output current in the CC mode, or the current setting after you have
__ pressed the [CiOTent) key.^_
The four incremental keys operate in two modes. Press and release for a single output change determined by the
control resolution (see "Supplemental Characteristics" in Chapter 1). Press and hold for an increasingly rapid output
change.
Voltage j
LiVoltage]
.T Current
1 Current
@ thru
Q
Press to select numerical values.
(Clear Entr''
[Enter)
Press to enter a minus sign.
Press to delete the last keypad entry. Use this key to correct one or more incorrect digits before
they are entered.
Press to delete an entire keypad entry and return to the meter mode. Use this key to exit from a
value before it is entered.
Press to enter a value or to accept an existing value and return the display to the meter mode.
The remaining shifted keys are for calibration (see Appendix A).
Figure 5-1. Front Panel Controls and Indicators
Controls and Indicators
Front Panel Operation
5-3
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