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====== Power Supply - Test Case ======

===== Initial Setup =====

In order to proceed through the test case, first of all delete the Scopy *.ini file (saves previous settings made in Scopy tool) from the following path on Windows: C:\Users\your_username\AppData\Roaming\ADI .

Open the Power Supply instrument. The interface should look like the picture below:

{{:university:tools:m2k:scopy:test-cases:powersupply_init.png?700|}}

Press multiple times on the "Enable" buttons to check if the instrument works.

===== Test Title =====
==== A. Independent Controls ====

<hidden>
^ Description                           ^ Test Steps     ^ Steps Resources ^ Expected Results ^ 
| Checking positive voltage output| 1. Set Tracking ratio control to Independent Controls |{{:university:tools:m2k:scopy:test-cases: ps_Astep1.JPG?100|}} | The interface should look like in the "Step Resources" picture (left side). |
| ::: | 2. Connect the power supply and voltmeter with the following pins: V+ power supply pin (red) to Scope Ch 1 (orange)| {{:university:tools:m2k:scopy:test-cases: ps_Astep2.JPG?100|}} | |
| Setting values | 3. Set the value to 3.3V and click enable.| {{:university:tools:m2k:scopy:test-cases: ps_Astep3.JPG?100|}} | The interface should look like in the "Step Resources" picture (left side). |
| ::: | 4. Monitor the power supply output with voltmeter.| {{:university:tools:m2k:scopy:test-cases: ps_Astep4.JPG?100|}}  | The voltmeter should read values between 3.25V and 3.35V. Just like shown on the left. |
| Changing set values | 5. Change the power supply output value to 1.8V. | {{:university:tools:m2k:scopy:test-cases: ps_Astep5a.JPG?100|Power Supply interface}} {{:university:tools:m2k:scopy:test-cases: ps_Astep5b.JPG?100|Voltmeter reading}} | The voltmeter should read values between 1.75V and 1.85V |
| ::: | 6. Change the power supply output value to 2.5V.| {{:university:tools:m2k:scopy:test-cases: ps_Astep6a.JPG?100|Power Supply interface}} {{:university:tools:m2k:scopy:test-cases: ps_Astep6b.JPG?100|Voltmeter reading}} | The voltmeter should read values between 2.45V and 2.55V |
| ::: | 7. Change the power supply output value to 5V. |{{:university:tools:m2k:scopy:test-cases: ps_Astep7a.JPG?100|Power Supply interface}} {{:university:tools:m2k:scopy:test-cases: ps_Astep7b.JPG?100|Voltmeter reading}}  | The voltmeter should read values between 4.95V and 5.05V |
| Checking Increment/Decrement Value; ±1V | 8. Set the knob to ±1V interval. No orange dot on the center. |{{:university:tools:m2k:scopy:test-cases: ps_Aknobstep8.JPG?100|}}  | The interface should look like in the “Step Resources picture (left side). |
| ::: | 9. Set value to 3V. Then use +/- sign to change value with ±1V interval.| | The value should change accordingly. Set Value ± 1V = the new value |
| Checking Increment/Decrement Value; ±100mV | 10. Set the knob to ±100mV interval. Orange dot seen on the center. | {{:university:tools:m2k:scopy:test-cases: ps_Aknobstep10.JPG?100|}} | The interface should look like in the “Step Resources picture (left side).|
| ::: | 11. Set value to 300mV. Then use +/- sign to change value with ±100mV interval.| | The value should change accordingly. Set Value ± 100mV = the new value |
| Checking Negative Voltage Output | 12. Change pin connections to the following: V- power supply pin (white) to Scope Ch 1 (orange). |{{:university:tools:m2k:scopy:test-cases: ps_Astep12.JPG?100|}}  | |
| ::: | 13 Repeat Steps 3 to 11. Set the values mentioned to negative in checking negative output. | | |
</hidden>

==== B. Tracking ====

<hidden>
^ Description                           ^ Test Steps     ^ Steps Resources ^ Expected Results ^  
| Checking output when in Tracking mode | 1. Set Tracking ratio control to Tracking |{{:university:tools:m2k:scopy:test-cases: ps_Bstep1.JPG?100|}} | The interface should look like in the "Step Resources" picture (left side). |
| ::: | 2. Connect the following pins: V+ power supply pin (red) to Scope Ch 1 (orange); V- power supply pin (while) to Scope Ch 2 (blue)| {{:university:tools:m2k:scopy:test-cases: ps_Bstep2.JPG?100|}} | |
| Setting tracking ratio | 3. Set value of positive output to 5V. Set tracking ratio to 50%| {{:university:tools:m2k:scopy:test-cases: ps_Bstep3.JPG?100|}} | The negative output value should be set automatically following the equation:  V-= -(ratio*V+). For 50% tracking ratio, V-= -2.5V. |
| ::: | 4. Monitor the power supply output with voltmeter. | {{:university:tools:m2k:scopy:test-cases: ps_Bstep4.JPG?100|}} | The voltmeter should read the following values:   V+ = 4.95V to 5.05V; V-  = -2.55V to -2.45V |
| Changing tracking ratio | 5. Set tracking ratio to 10%.| {{:university:tools:m2k:scopy:test-cases: ps_Bstep5a.JPG?100|Power Supply interface}} {{:university:tools:m2k:scopy:test-cases: ps_Bstep5b.JPG?100|Voltmeter reading}} | Negative output Value should be set to -500mV. The voltmeter should read the following values:   V+ = 4.95V to 5.05V;  V-  = -505mV to -495mV |
| ::: | 6. Set tracking ratio to 25%.. | {{:university:tools:m2k:scopy:test-cases: ps_Bstep6a.JPG?100|Power Supply interface}} {{:university:tools:m2k:scopy:test-cases: ps_Bstep6b.JPG?100|Voltmeter reading}} | Negative output Value should be set to -1.25V. The voltmeter should read the following values:   V+ = 4.95V to 5.05V; V-  = -1.30V to -1.20V |
| ::: | 7. Set tracking ratio to 66 %. |{{:university:tools:m2k:scopy:test-cases: ps_Bstep7a.JPG?100|Power supply interface}} {{:university:tools:m2k:scopy:test-cases: ps_Bstep7b.JPG?100|Voltmeter reading}} | Negative output Value should be set to -3.3 V. The voltmeter should read the following values:   V+ = 4.95V to 5.05V;  V-  = -3.35V to -3.25V |
| ::: | 8. Set tracking ratio to 100%.| {{:university:tools:m2k:scopy:test-cases: ps_Bstep8a.JPG?100|Power Supply interface}} {{:university:tools:m2k:scopy:test-cases: ps_Bstep8b.JPG?100|Voltmeter reading}} | Negative output Value should be set to -5V. The voltmeter should read the following values:   V+ = 4.95V to 5.05V; V-  = -5.05V to -4.95V |
</hidden>

Test Results will be recorded in the following document: {{:university:tools:m2k:scopy:test-cases:power_supply_-_test_case.xlsx| Power Supply - Test Case}}

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