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Installation
Installation and Operating Checklist
As shipped from the factory, the output compensation of the dc source is set to Low Mode. This lets
the unit operate with phones having input capacitances from 0 to 12000 µF.
For improved transient response in your test system, you may want to set the output compensation to
High Mode (for phones having input capacitances from 5 to 12000 µF). Refer to "Output Compensation"
in this chapter.
If you are remote sensing, is the sense switch on the back of the dc source in the Remote
position? Remote sensing is recommended for most applications. Push the switch out for remote sensing.
Refer to "Remote Sensing" in this chapter.
If you are remote sensing, are the + and − − − − sense leads connected ONLY at the test fixture and
within 20 inches of the phone contacts? For best performance, the distance from sense lead termination
to the phone contacts should be as short as possible. Refer to "Lead Resistance" in this chapter.
If you are using the front panel terminals, are the load leads twisted and less than 18 inches in
length? When using the front panel terminals and not remote sensing, you must set the sense switch on
the back of the unit to the Local position. Refer to "Lead Resistance" and "Local Sensing" in this
chapter.
Are you able to communicate remotely with the dc source? If not, check that the address setting
and the programming language are set correctly. Refer to "HP-IB address" and "Language setting" in
chapter 5.
Is the Prot or Err annunciator on the front panel on? If yes, clear the fault condition before
continuing. Refer to "Clearing Protection" in chapter 5.
Is the Overvoltage circuit shutting the unit down? If yes, you can disable the overvoltage circuit.
Refer to "Clearing Protection" in chapter 5.
Are you measuring dynamic output currents? If yes, check that the current detector is set to
ACDC. Refer to "Front Panel Measurements" in chapter 5.
Are you measuring output currents under 20 mA? If yes, check that the current range is set to
LOW. Refer to "Front Panel Measurements" in chapter 5.
Are the front panel readings unstable? If yes, check that the front panel sampling rate is correct.
Also check the setting of the output compensation. Refer to "Front Panel Measurements" in chapter 5
and "Output Compensation" in this chapter.
Check the Output Compensation
Check the Sense and Load Connections
Check the Operating Settings and Conditions
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