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Performance Tests
11
Table 2-2. ( Continued ) CV Load Effect
Step Action Normal Result
This test measures the change in output voltage resulting from a change in output current from full-load to no-load or
no-load to full-load.
1
Turn off ac source. Connect DVM across output terminals ( or
ratio transformer if used ) and 7.5 ohm for Agilent 6814B, 15
ohm for 6834B or 5 ohms for 6843A load resistors as shown in
Test Setup Figure 2-1.
2
Turn on ac source. Press [Shift] [Output] display reads *RST
press [Enter].
*RST resets ac source to known factory
default state.
3
Program VOLT:ACL EXT, VOLT:RANGE 150 VOLT 150
CURR 20 for Agilent 6814B, CURR 10 for Agilent 6834B or
CURR 32 for Agilent6843A. Enable output press [Output
on/off].
CV annunciator on or reduce voltage until
CV annunciator come on.
Output current near 20A for
Agilent6814B, 10A for Agilent 6834B or
30A for Agilent6843A.
4
Record output voltage measurement from DVM.
5
Open S1 ( S2 or S3 if Agilent 6834B ). Output current near zero.
6
Record output voltage measurement from DVM.
7
Check test result.
The difference between the DVM
readings in step 4 & 6 are within the
specified load effect limits.
Table 2-2. ( Continued ) CV Source Effect
Step Action Normal Result
This test measures the change in output voltage resulting from a change in ac mains input voltage from the minimum to
maximum value within the line voltage specification.
1
Turn off ac source. Connect DVM across output terminals ( or
ratio transformer if used ) and 30 ohm for Agilent 6814B, 60
ohm for 6834B or 20 ohm for Agilent6843A load resistors as
shown in Test Setup Figure 2-1.
2
Turn on ac source. Press [Shift] [Output] display reads *RST
press [Enter].
*RST resets ac source to known factory
default state.
3
Program VOLT:ALC EXT, VOLT 300, CURR 10 for Agilent
6814B, CURR 5 for Agilent 6834B or CURR 16 for
Agilent6843A.
Enable output press [Output on/off].
CV annunciator on or reduce voltage until
CV annunciator comes on.
Output current near 10A for
Agilent6814B;
5A for Agilent 6834B or 15A for
Agilent6843A.
4
Adjust the variable transformer to low line condition. ( 180 or
360 Vac ).
Record voltage reading of DMM.
5
Adjust the variable transformer to high line condition. ( 254 or
440 Vac ).
Record voltage reading of DMM.
6
Check test result.
The difference between the DVM
readings in step 3 & 5 are within the
specified load effect limits.