Rev. 01/2021
10
Settings and Readings
Isetpoint
(Pin 10)
This input signal is used to provide an analog setpoint value (amplitude modulation). In order
to use the analog setpoint, it must be configured in the PC via USB or the PLB-21. Please
apply a voltage corresponding to the desired current settings. The scaling is 50 A/V. For
analog modulation the best results are obtained when modulating between 50 and 100% of the
maximum values.
Analog modulation for LDP-CW series Analog modulation for LDP-C series
Idiode
(
Pin 9
)
This signal is used as an output signal of the internal current shunt. It provides near real time
measurement of the output current. Connect your scope and take into account the following
scaling:
50 A/V
Udiode (Pin 4)
This signal is used to determine the compliance voltage of the connected load. It provides
near real time measurement. Connect your scope and take into account the following scaling:
0.1 V/V
Master Enable (MEN) (Pin 8)
The Master Enable provides a safety interlock that disables the driver when pulled low.
This signal must be pulled high by the user for the driver to start up. If the signal is low when
the driver is powered on, it will not work properly.
It is recommended that the user also disables the ENABLE after disabling MEN. Otherwise
there will be a current overshoot on the connected load. When no safety interlock is needed
this signal can be connected to pin 2 of the BOB connector.
Enable (Pin 7)
The ENABLE signal enables / disables the driver during normal operation. The ENABLE
signal must be pulled low by the user in order for the driver to start up. If the signal is high
when the driver is powered on it will not work properly.
After the user applies the ENABLE signal, the internal current regulator ramps the current
flow to the configured setpoint in a configured amount of time (soft start).
Pulse (Pin 6)
This signal is only used by the LDP-C. It provides fast access to the output stage and can be
used to pulse the output current. Its actual usage depends on the configured trigger mode.
Please see section “Trigger Modes” for more details.
