TM 11-6625-2965-14&P

c.Set METER switch to highest voltage range and RANGE switch to highest voltage mode and turn on supply.

d.Adjust VOLTAGE controls until front panel meter indicates exactly the maximum rated output voltage.

e.Differential voltmeter should indicate maximum rated output voltage within 3%.

5-16 Output Current and Ammeter Accuracy. To check the output current, proceed as follows:

a.Connect test setup shown in Figure 5-4.

b.Set METER switch to lowest current range and RANGE switch to high voltage mode.

c.Turn on supply and adjust VOLTAGE con- trols until front panel meter indicates exactly 300 mA (0.5 Ampere for Model 6206B supplies).

d.Differential voltmeter should read 1.5 ±

0.045Vdc.

Figure

5-4.

Output Current, Test

Setup

5-17 Load

Regulation.

 

 

in

the

Definition:

The

change

ΔΕ

static

value

of dc

output

OUT

re-

voltage

sulting from a change in load resistance from open circuit to a value which yields maximum rated output current (or vice versa).

5-18 To check the constant voltage load regula- tion, proceed as follows:

a . Connect test setup as shown in Figure

5-5.

b. Turn CURRENT controls fully clockwise.

c.Turn-on supply and adjust VOLTAGE con- trols until front panel voltmeter indicates exactly the maximum rated output voltage.

d.Read and record voltage indicated on dif-

ferential voltmeter.

e . Disconnect load resistors.

f.Reading on differential voltmeter should not vary from reading recorded in Step d by more than 8mVdc for Models 6204B and 6205B or 10mVdc for Model 6206B supply.

Figure 5-5.

Load

Regulation,

Test Setup

 

5-19 Line Regulation.

 

 

 

 

 

Definition:

The

change,

ΔΕ

in

the

 

 

 

 

OUT

 

 

 

static value

of dc output

voltage

re-

I

sulting from a change in ac input volt-

 

age over the specified range from low

 

line 10% less than nominal to high

 

line 10% more than nominal or from

 

high line to

low

line.

 

 

 

 

5-20 To test the constant voltage line regulation, proceed as follows:

a.Connect variable auto transformer be- tween input power source and power supply power input.

b. Turn CURRENT controls fuIly clockwise. c. Connect test setup shown in Figure 5-5.d. Adjust variable auto transformer for low

line (104Vac).

e. Set METER switch to highest current range and turn on supply.

f. Adjust VOLTAGE controls until front panel voltmeter indicates exactly the maximum rated output voltage.

9.Read and record voltage indicated on differential voltmeter.

h. Adjust variable auto transformer for high line (126Vac).

5-4