AMETEK PLA-PLW - Manual (Page 121)

APPENDIX C: NEW ELOAD FEATURES
FW: 2.17/060216
x Power Interruption (Current Interruption)
FW: 2.29/061005
x Under-temperature Trip Caution Message (UTT)
x Input Contactor Control
x Ultra-low Range Option
FW: 2.40/061005
x Step Modification
x OSC Range Selection
FW: 2.49/081007
x Interlock Function
1. POWER INTERRUPTION (CURRENT INTERRUPTION) MODE:
For Battery and Fuel Cell Testing, a common method used to measure the internal
impedance is the Current/Power Interrupt or just the Interrupt method. The battery or
fuel cell is loaded at a constant current, and the current is interrupted by bringing it down
to zero or lower current level. During the interrupt period, the battery or fuel cell voltage
is measured. As a result the magnitude of the impedance can be determined. The
Interrupt method can be achieved in either CC mode or CP mode, with recommendations
in the CC mode.
Local Control:
Press SINGLE twice Î FLASHING
Æ Set the eLOAD in CC or CP Mode
Æ Set the Main Level to 0Adc or the desired current level via the encoder
Æ Set the Peak Level to a current level larger than the Main to load the DUT
Note: Peak Level is set via the PEAK hot key and the encoder for value edit
Æ Set the Power Interruption Pulse Width (PINT: 200 ȝs ~ 25000 ȝs)
Æ Set the System Bandwidth (OSC3, OSC2, OSC1 and DEFAULT)
Æ Activate the INPUT
Æ Activate the PULSE mode
Æ Press TRIGGER to activate Power Interruption
Remote Programming:
Setting up the Remote Connection:
1) Connect the eLOAD to the PC via GPIB/RS-2128/USB/ETHERNET Cables
2) Follow the eTOOL1 Guide to communicate with the eLOAD via remote interface
3) Once connected, type *IDN? to query the unit
SCPI Commands:
Set the eLOAD in CC or CP Mode Æ MOD:CURR OR MOD:POW
Set the Main Level to 0Adc or the desired current level Æ ISET or CURR
C-1