| OUTPUT SPECIFICATIONS |
|---|
| Voltage/Current Levels |
| PLH120 | 0 to 120V / 0.01mA to 750mA (90W max.) |
| PLH250 | 0 to 250V / 0.01mA to 375mA (94W max.) |
| Note: Actual maxima for voltage and current are typically 1% greater
than the figures given above except for the voltage control on the PLH250 which is limited to
250.0V. |
| Output Setting & Control |
| Voltage Setting | By coarse and fine controls |
| Current Setting | By single logarithmic control |
| Low Current Range | Reduces max. current to 75mA and increases resolution to 0.01mA |
| Output Mode | Constant voltage or constant current with automatic cross-over. CC indicator lit in constant current mode |
| Output Switch | Electronic, non isolating. Preset voltage and current limit displayed when Output is off |
| Output rise time | (no load) <20ms. |
| View Settings | With the output On, the
meters show actual voltage and current. The preset levels can be viewed and adjusted at any time by pressing
the View Settings button |
| V-Span (Voltage Span Control) | The voltage adjustment range can be controlled
by digital setting of the end-stop values of the coarse voltage control to any desired values. The range for Vmax
is 1V to 120V or 250V depending on model. The range for Vmin is 0 to (Vmax – 1V). |
| S-Lock (Settings Lock) | Voltage and current settings can be locked by a
single button press. Lock accuracy is equal to the meter accuracy
(see Meter Specification). |
| Output Performance |
| Ripple & Noise | Normal mode voltage: <2mV rms and 10mV p-p |
| Normal mode current | <10µA rms ; <1µA rms on 75mA range |
| Common mode current | <20µA rms |
| Load Regulation | Voltage - <0·01% + 10mV
Current - typically 0·01% + 50μA |
| Line Regulation | Voltage <0·01% + 10mV for 10% line change
Current <0·01% + 50μA. for 10% line change |
| Transient Response | <250μs to within 50mV of setting for a 90% load change |
| Temp. Coefficient | Voltage: typically <(50ppm + 2mV)/°C
Current: typically <(100ppm + 0.1mA)/°C; <(100ppm + 0.01mA)/°C on 75mA range. |
| Output Protection |
| Output Protection | Output will withstand forward
voltages of up to rated output voltage. Reverse protection by diode clamp for currents to 3A |
| OVP and OCP Trips | Voltage or current measured to be in excess of
105% of the rated maximum will cause the output to trip off |
| Over-temperature | Output trips off for over-temperature |
| Safety Interlocks | Operations that could cause an unexpected change
in voltage or current settings are interlocked with the output switch |
| Output Connections |
| Output Terminals | Universal 4mm safety binding posts on 19mm (0·75”) spacing.
Terminals can accept fixed shroud 4mm plugs, standard 4mm plugs,
fork terminals and bare wires |
| Remote Sense |
| Sense Selection | Voltage sensing is selected as Local or Remote by front panel switch |
| Sense Terminals | Sprung loaded screw-less terminals |
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