iL Series User Manual
42
Rev B
California Instruments
Step Action
Display
3
On the Entry keypad, press
↑
once to scroll to the
ON
parameter and press Enter. The
OCP
annunciator will
light, indicating that the overcurrent protection circuit is
on
CURR:PROT
ON
If you wish to set a time delay between the detection of
the fault and the disabling of the output, scroll to the
delay command on the protection menu. The default
delay is 100 milliseconds
DELAY .1
Enter the delay from the Entry keypad, such as . 2 5 0
Enter.
DELAY .250
4.
When you want to restore normal operation after the
cause of the overcurrent condition has been removed,
scroll to the protection clear command and press Enter.
The
OCP
annunciator then will go off
PROT:CLEAR
Table 31 : Setting protection parameters
4.6.4 Using Transient Voltage Modes
The voltage can be programmed in the following transient operating modes:
STEP
causes the output to permanently change to its triggered value.
PULSE
causes the output to change to its triggered value for a specific time,
as determined by the Pulse menu parameters.
LIST
causes the output to sequence through a number of values, as
determined by points entered in the List menu.
FIXED
disables transient operation for the selected function.
4.6.5 Step Transient
The Voltage Menu lets you specify an alternate or triggered voltage level that the AC
source will apply to the output when it receives a trigger. Because the default
transient voltage level is zero volts, you must first enter a triggered voltage before
you can trigger the AC source to change the output amplitude. Refer to chapter 4 of
the SCPI Programming Manual for more information about programming triggers.
In the following example, the voltage output is set to 120 Vrms and then stepped
down to 102 Vrms.
Step
Action
Display
1.
On the Function keypad, press Output On/Off to enable
the output. The
Dis
annunciator will go off.
0 V 60 HZ
2.
Press Voltage to access the Voltage menu. On the Entry
keypad, press 1 2 0 Enter.
VOLT 120
3.
Access the Voltage Menu again and press
t
to access
the triggered voltage command.
VOLT:T 0
4.
On the Entry keypad, press 1 0 2 Enter.
VOLT:T 102
5.
Access the Voltage Menu again and press
t
to access
the voltage mode command. It should be in the default
FIXED mode. An AC source function in the FIXED mode
does not respond to triggers.
6.
On the Entry keypad, press
↑
or
↓
to scroll through the
VOLT:M
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