General Information - 1
13
Figure 1-2. AC Source Output Characteristic (in real-time mode)
Output VA Capability
The output capability of each output phase is limited by VA (volts-amps) rather than power (watts). The
amount of VA available to a load can be determined by examining figure 1-3, the output power curve.
This curve rates the available VA versus output voltage. Full VA is available only at a full-scale voltage.
Full current is available at voltages between 50% and 100% of the output voltage range. Appendix A
documents the ac source’s specifications and supplemental characteristics.
NOTE:
The load on the ac source may draw full VA at any power factor between 0 and 1, and
may draw maximum current with a crest factor of 4 (3 for Agilent 6843A). If the load
draws current in excess of the maximum rated rms or peak current, the voltage amplitude
will be clipped to prevent excessive internal power dissipation.
Figure 1-3. AC Source VA Capabilities
Vrms
Irms
300 V
150 V
5A 10A (6834B 3phase)
10A 20A (6814B)
0
16A 32A (6843A)
See Figure 1-3
15A 30A (6834B 1phase)
0
10
OUTPUT VOLTAGE, PERCENT OF RANGE
OUTPUT VA,
PERCENT OF MAXI
MUM
20
30
40
50
60
70
80
90
100
70
80
90
100
10
20
30
40
50
60
