| U8031A | U8032A |
Total power output (W) | 0 – 375 W |
Voltage output (V) Output Channel 1 & 2 (@ 0 to 40 °C) | 0 to 30 V | 0 to 60 V |
Current output (A) Output Channel 1 & 2 (@ 0 to 40 °C) | 0 to 6 A | 0 to 3 A |
Number of outputs | Three isolated outputs – Two variable: CV and CC operation – One fixed: CV operation only |
5 V fixed output2 Output Channel3 | – Voltage/Current output: 5 V, 3A – Output accuracy: ≤ 5% or (5 V ± 0.25 V) – Vrms: < 2 mVrms, or Vpp: < 50 mVpp – Load and line regulation: ≤ 5 mV – Overload condition: 3 A + 20% (typical) |
Line & load regulation (for variable output) | CV: < 0.01% + 2 mV CC: < 0.02% + 2 mA |
Ripple & noise Based on calculation at temp 18 - 28 °C and bandwidth at 20 Hz to 20 MHz | CV: ≤1 mVrms, 0.5 mVrms (typical) or ≤ 10 mVpp, 5 mVpp (typical) CC: ≤ 1 mArms |
Load transient response time Within 15 mV from full load to half load and from half load to full load | < 50 us |
Stability (output drift) Following a 30-minute warm-up, with the output in the ON state according to the operating mode (CC with load or CV), and with a change in the output over 8 hours under constant load, line, and ambient temperature. | Voltage: < 0.02% Current: < 0.1% |
Programming accuracy (23 °C ± 5 °C) | CV: ≤ 0.25% + 15 mV CC: ≤ 0.30% + 15 mA |
Meter readback accuracy (23 °C ± 5 °C) | CV: ≤ 0.25% + 10 mV CC: ≤ 0.25% + 10 mA |
Programming/meter resolution | Voltage: 10 mV (4 digits) Current: 10 mA (3 digits) |
Maximum output float voltage | ±240 Vdc |
Display | LCD with amber backlight |
Rotary knob for reading adjustment | Yes |
Temperature coefficient (for 12 months) ±(% of output + offset) | Output – CV: (0.01% + 1 mV)/°C – CC: (0.01% + 1 mA)/°C
OVP, OCP – CV: < 0.05%/°C – CC: < 0.05%/°C |
Output voltage overshoot During turn-on or turn-off of AC power, if output control is set less than 1 V | < 1 V |
Voltage programming speed to within 1 % of total excursion | 30 V | 60 V |
Up | Full Load No Load | 80 ms 80 ms | 200 ms 100 ms |
Down | Full Load No Load | 30 ms 150 ms | 30 ms 300 ms |
Over temperature protection | Yes |
Last memory setting enabled | Yes |
Three memory storage locations for voltage and current settings | Yes |
Erasing non-volatile memory | Yes, erasable through front panel |
Rack mount capability | Yes, front panel and rear have rack-mountable support |
Input power option (selectable) | 100 Vac ± 10%, 47 to 63 Hz 115 Vac ± 10%, 47 to 63 Hz 230 Vac ± 10%, 47 to 63 Hz |
Maximum input power | 600 VA |
Fuse | External, customer assessable |
Operating temperature | 0 to 40 °C |
Storage temperature | –40 to 70 °C |
Humidity | 15% RH (relative humidity) to 85% RH at 40 °C (non condensing) |
Altitude | Up to 2000 m |
Fan acoustic noise | < 60 dB sound power |
Environment of use | – Installation category II – Pollution Degree 2 |
Output connections | +Out, –Out, and chassis ground on the front panel. (Either positive or negative output terminal may be grounded or can be operated floating at up to a maximum of 240 V off ground. Total output voltage to ground must not exceed 240 Vdc) |
Binding posts | Output binding post located horizontally and side by side |
I/O connections | N/A |
AC input | 3 pins standard IEC AC power connector with fuse and line selection at the rear |
Overvoltage protection accuracy ± (% of output + offset) | < 0.5% +0.5 V |
Overvoltage protection programmable range | 0.1 to 33.0 V | 0.1 to 66.0 V |
Overvoltage protection response time | < 10 ms |
Overcurrent protection accuracy ± (% of output + offset) | < 0.5% + 0.5 A |
Overcurrent protection programmable range | 0.1 to 6.6 A | 0.1 to 3.3 A |
Overcurrent protection response time | < 10 ms |