verifY that the 1OmA was actually programmed into the Model
220. Press the V-LIMIT button to verify that the 1OV limit was
actually programmed into the Model 220.
Example 3-In this example the Model 220 will be programm-
ed to output three separate currents, three separate com-
pliance limits, three separate dwell times and three separate
memory locations. The three memory locations will be pro-
grammed in the step program mode.
Required Output: lOOpA, 1OV V-limit, 1 second dwell time,
memory location 1.
ImA, 20V V-limit, 1OOmsec dwell time,
memory location 2.
lOmA, 30V V-limit, 2.5 second dwell time,
memon/ location 3.
1. Press MEMORY, 1, ENTER. (Selects memory location 1 .I
2. Press SOURCE, 1, 0, 0, 5XPONENT. 6, ENTER. (Pro-
grams memory location 1 source for 10Oj~A.j
3. PressV-LIMIT, 1, 0, ENTER. (Programs memory location 1
V-limit for 1OV.l
4. Press DWELL TIME, 1, 5XPONENT. 0, ENTER. (Programs
memory location 1 dwell time for one second.)
5. Press MEMORY, 2, ENTER (Selects memory location 2.)
6. Press SOURCE, 1, 5XPONENT. 3, ENTER. (Programs
memory location 2 source for ImA.
7. Press V-LIMIT, 2,0, ENTER. (Programs memory location 2
V-limit for 2OV.j
8. Press DWELL TIME, 1, 0, 0, EXPONENT, + /-, 3, ENTER.
(Programs memory location 2 dwell time for 100msec.j
9. Press MEMORY, 3, ENTER. (Selects memory location 3.1
10. Press SOURCE, 1, 0, 5XPONENT. 3, ENTER. (Programs
memory location 3 source for lOmA.)
11. Press V-LIMIT, 3,0, ENTER. (Programs memon/ location 3
V-limit for 30V.J
12. Press DWELL TIME, 2, ., 5, EXPONENT, 0, ENTER. (Pro-
grams memory location 3 dwell time for 2.5sec.)
13. Press STEP. (Selects the step program mode.)
After completing step 13 the Model 220 is programmed into
the parameters stated. To display any of the three programm-
ad source values, select the desired source value’s memon/
location and press the SOURCE button. To output any of the
three source values select the desired source value’s memory
location, and press the OUTPUT bunon. Pressing the START/
STOP button advances the Model 220 to the next channel.
Notice that the START/STOP LED turns on for the program-
mad dwell time and then turns off. Note that actuation of
START/STOP at memory location 3 will put instrument to
location 1.
Example 4-In this example the Model 220 will be programm-
ed to output five separate currents, five separate compliance
limits, five separate dwell times and five separate memon/ loca-
tions.
Required Output: lOOnA, 5V V-limit, 0.5 second dwell time,
memory location 1.
lfi, 1OV V-limit, 1 second dwell time,
memory location 2.
lOti, 15V V-limit, 1.5 second dwell time,
memory location 3.
loo@!, 20V V-limit, 2 second dwell time,
memon/ location 4.
lmA, 25V V-limit, 2.5 second dwell time,
memory location 5.
1. Press MEMORY, 1, ENTER. (Selects memory location 1.)
2. Press SOURCE, 1, 0, 0, EXPONENT, 9, ENTER. (Pro-
grams memonl location 1 soume for lOOnA.
3. Press V-LIMIT, 5, ENTER. (Programs memory location 1
V-limit for 5V.I
4. Press DWELL TIME, .,
5, 5XPONENT. 0, ENTER. (Pro-
grams memory location 1 dwell time for 0.5 seconds.)
5. Press MEMORY, 2, ENTER. (Selects memory location 2.)
6. Press SOURCE, 1, D(PONENT, 6, ENTER. (Programs
memory location 2 source for 1fi.j
7. Press V-LIMIT, 1, 0, ENTER. (Programs memory location 2
V-limit for 1OV.j
8. Press DWELL TIME, 1, 5XPONENT. 0, ENTER. (Programs
memon/ location 2 dwell time for one second.)
9. Press MEMORY, 3, ENTER. (Selects memory location 3.1
10. Press SOURCE, 1, 0, EXPONENT, 6, ENTER. (Programs
memory location 3 soume for lOti.)
11. Press V-LIMIT, 1,5, ENTER. (Programs memon/ location 3
V-limit for 16V.l
12. Press DWELL TIME, 1, .,
5, D(PONENT, 0, ENTER. (Pro-
grams memory location 3 dwell time for 1.5 seconds.)
13. Press MEMORY, 4, ENTER. (Selects memory location 4.)
14. Press SOURCE, 1, 0, 0, 5XPONENT. 6, ENTER. (Pro-
grams memory location 4 soume for loo&)
15. Press V-LIMIT, 2,0, ENTER. (Programs memory location 4
V-limit for 2OV.)
16. Press DWELLTIME, 2,5XPONENT, 0, ENTER. (Programs
memory location 4 dwell time for 2 seconds.)
17. Press MEMORY, 5, ENTER. (Selects memory location 5.)
19. Press SOURCE, 1, EXPONENT, 3, ENTER. (Programs
memory location 5 soume for ImA.)
19. Press V-LIMIT, 2,5, ENTER. (Programs memory location 5
V-limit for 25V.)
20. Press DWELL TIMEI, ., 5, EXPONENT, 0, ENTER. (Pro-
grams memon/ location 5 dwell time for 2.5 seconds.)
After completing step 20 the Model 220 is programmed into
the parameters stated. To display any of the parameters of any
memory location select the desired memory location and then
select the desired parameter. To output any of the source
valuas select the desired source value’s memory location end
press the OUTPUT button.
To scan the five memory locations use the following pro-
cedure:
1. Select the program mode of scanning. (Select Single, Con-
tinuous, or Step.1
2. Select desired display mode. (Source, V-limit, dwell time or
memory.)
3. Press the START/STOP bunon.
2-6
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