Agilent Technologies 6834B, 6814B Procedure for Three-PhaseAC Sources, and phase 3 to 235 Vrms

4 - Front Panel Operation

Procedure for Three-Phase AC Sources

If you have a three-phase ac source, you can set the rms voltage of all three phases identically, or set each one differently. This is controlled via the Phase Select Menu on the Function keypad.

The following example shows how you can set the phase 1 output to 120 Vrms, phase 2 to 180 Vrms,

and phase 3 to 235 Vrms.

	Action	Display
1.	On the Function keypad, press Voltage. Note that in the power-on default state, the	VOLT	0
	φ1, φ2, and φ3 annunciators are all lit, indicating that any command sent to the
	instrument will be sent to all three phases.
2.	Scroll through the phase selections by pressing Phase Select	VOLT	0
	Pressing Phase Select moves you through phases 1, 2, and 3, as indicated by the
	phase annunciators. Pressing it once more returns you to the first state with all three
	phase annunciators on.
3.	While in the Voltage menu press Phase Select to access Phase 1. On the Entry pad	VOLT	120
	press 1 2 0 Enter.
4.	Access the Voltage menu again and press Phase Select once to access Phase 2. On	VOLT	180
	the Entry pad press 1 8 0 Enter.

5.Access the Voltage menu again and press Phase Select once to access Phase 3. On the Entry pad press 2 3 5 Enter.

6.Press Output On/Off to enable the output. The Dis annunciator will go off, indicating that the voltages are now applied to the output terminals.

To verify the output, you can measure it as follows:

7.Note that the φ3 annunciator is on, indicating that you are monitoring the last phase you selected, which was Phase 3.

8.Press Phase Select once. The φ1 annunciator will light, indicating that you are now monitoring Phase 1.

9.Press Phase Select once. The φ2 annunciator will light, indicating that you are now monitoring Phase 2.

10.Press Phase Select once. The φ3 annunciator will light, indicating that you are now monitoring Phase 3 again.

VOLT 235

235 V 60 Hz

235 V	60 Hz
120 V	60 Hz
180 V	60 Hz
235 V	60 Hz

NOTE: The Meter menu does not go to the all-phases state present in the Phase Select menu because the front panel can display only one phase at a time. Refer to the ac source Programming Guide on how to return simultaneous measurements from all three phases.

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