5 - Front Panel Operation
Set transient operation for Pulse mode
In this example, assume that the CC mode is active, the slew rate is at the factory default setting (maximum rate), and the applicable transient operation parameters have been set as follows: pulse mode, main current level = 5 A, transient current level = 10 A, pulse width = 1 millisecond.
In this example, the electronic load starts conduction at the main current level setting (5 amps). When the transient mode is turned on and an external trigger signal is received, module input current will slew to and remain at 10 A for the remainder of the 10 millisecond time period, then slew to and remain at 5 A until another trigger is received. Any triggers that occur during the time the transient level is in effect will extend the pulse by another 10 milliseconds. Figure
Figure 5-6. Pulsed Transient Operation
| Action | Display |
1. | On the Function keypad, press Current. On the Entry keypad, press 5 Enter . | CURR 5 |
2. | On the Function keypad, press Current. On the Function keypad, press Q key until | C:TLEV |
| transient current is displayed. |
|
3. | On the Entry keypad press 10 Enter. | C:TLEV 10 |
4. | On the Function keypad, press Tran. On the Function keypad, press Q key until | T:TWID |
| transient pulse width is displayed. |
|
5. | On the Entry keypad press 0.01 Enter. | T:TWID 0.01 |
6. | On the Function keypad, press Tran. On the Function keypad, press Q key until | T:MODE |
| transient mode is displayed. |
|
7. | To select the pulse mode, press the QInput or R Input key until the Pulse mode | T:MODE PULS |
| is displayed. Then press Enter. |
|
8. | On the Function keypad, press the Tran key and select ON to activate the transient | TRAN ON |
| mode. |
|
9. | On the Function keypad, press Trigger Control, then press Enter. This initiates | INIT:IMMED |
| the trigger system. |
|
10 | Press Shift and Trigger. This starts the pulse. Repeat this step for additional pulses. |
|
Set transient operation for Toggled mode
In this example, assume that the CC mode is active, the slew rate is at the factory default setting (maximum rate), and the applicable transient operation parameters have been set as follows: toggle mode, main current level = 5 A, transient current level = 10 A.
The operation of toggled mode is similar to that described for continuous and pulse operation, except that each time a trigger is received the input alternates between the main and transient current levels. Figure
66