Ametek Amrel PLA Series Operation Manual page 100

MODE CP or MODE:POW
This command sets Electronic Load to constant power mode.
MODe:RANGe
This command sets the range after the mode is set.
Parameters:
i. low range
ii. middle range
iii. high range
iv. ultra-range
Example:
TRANsient
This subsystem programs the transient functions of three transient modes: CONTinous, PULSe, T OGGle. The input
levels (TLEVel) and slew rate (SLEW) are programmed from the current, resistance, power and voltage subsystems.
TRAN[:STATe]
This command enables or disables the transient or stepping function. The parameter ON | 1 enables the function and OFF
| 0 disables it.
Parameter:
Example:
DUTY
This command sets pulse duty cycle, as a percentage of the total cycle, of continuous transient mode. If the Electronic
Load is operating in another mode, the duty cycle is stored until the Load changes to continuous mode.
Parameter:
Example:
FREQ
This command sets pulse frequency of continuous transient mode in Hz. If the Electronic Load is operating in another
mode, the pulse frequency is stored until the Load changes to continuous mode.
Parameter:
Example:
SLEW
This command sets the power slew rate for the active mode. The programmed slew rate is in effect for all changes except
INP:ON or OFF. The hardware implementation selects a slew rate that is closest to the SLEW value. To determine the
actual value, use the query SLEW?.
Parameter:
Example:
TRAN:TWID
This command sets pulse width of pulse t ransient mode in millisecond. If the Ele ctronic Load is operating in another
mode, the pulse width is stored until the Load is powered cycle.
Parameter:
Example:
Query syntax:
Returned parameter:
 Step Programming Functions
STEP
This subsystem programs the stepping functions for stepping mode. The number of loops, step values, and dwell t imes
are programmed for a specified operating mode.
M470039-01 REV-F
0 – 3
"MODE:RES" – sets the Electronic Load in CR mode;
"MODE:RANG 2" – sets the Electronic Load in high range;
"MODE:RANG? CR" – queries the range for CR mode.
Transient Programming Function
ON | 1, OFF | 0
"TRAN ON" – enables the transient function
2 to 98; MIN; MAX
"CURR:DUTY 50" – sets a 50% duty cycle for transient current mode.
0.25 to 20000; MIN; MAX
"CURR:FREQ 1000" – sets a 1000Hz frequency for transient current mode.
0 to maximum value; MIN; MAX
"SLEW 6"- sets the slew rate to 6.
0.05 to 10000
"TRAN:TWID 800" – sets the pulse width to 800 ms.
"TRAN:TWID?"
Pulse width value in second.
Unit: Depending on mode
Unit: ms
Unit: %
Unit: Hz
Page 99