| | Models | XT7-6 | XT15-4 | XT20-3 | XT30-2 | XT60-1 | XT120-0.5 | XT250-0.25 | | Output Ratings | Output Voltage
Output Current
Output Power | 0-7 V
0-6 A
42 W | 0-15 V
0-4 A
60 W | 0-20 V
0-3 A
60 W | 0-30 V
0-2 A
60 W | 0-60 V
0-1 A
60 W | 0-120 V
0-0.5 A
60 W | 0-250 V
0-0.25 A
62.5 W | | Line Regulation (1) | Voltage (0.01% of Vmax+2 mV
Current (0.01% of Imax+0.25 mA) | 2.7 mV
0.85 mA | 3.5 mV
0.65 mA | 4 mV
0.55 mA | 5 mV
0.45 mA | 8 mV
0.35 m | 14 mV
0.3 mA | 27 mV
0.275 mA | | Load Regulation (2) | Voltage (0.01% of Vmax+2 mV)
Current (0.01% of Imax+0.25 mA) | 2.7 mV
0.85 mA | 3.5 mV
0.65 mA | 4 mV
0.55 mA | 5 mV
0.45 mA | 8 mV
0.35 mA | 14 mV
0.3 mA | 27 mV
0.275 mA | | Meter Accuracy | Voltage (1% of Vmax+1 count)
Current (1% of Imax+1 count) | 0.08 V
0.07 A | 0.25 V
0.05 A | 0.3 V
0.04 A | 0.4 V
0.03 A | 0.7 V
0.02 A | 2.2 V
0.006 A | 3.5 V
0.004 A | | Output Noise & Ripple (Vmode) (20 Hz-20 MHz) | RMS:
Peak-to-Peak: | 1 mV
2 mA | 1 mV
2 mA | 1 mV
2 mA | 1 mV
2 mA | 1 mV
2 mA | 1 mV
2 mA | 1 mV
2 mA | | Stability (3) | Voltage (0.02% of Vmax)
Current (0.03% of Imax) | 1.4 mV
1.8 mA | 3 mV
1.2 mA | 4 mV
0.9 mA | 6 mV
0.6 mA | 12 mV
0.3 mA | 24 mV
0.15 mA | 50 mV
0.075 mA | | Temperature Coefficient (4) | Voltage (0.015% of Vmax/°C)
Current (0.02% of Imax/°C) | 1.05 mV
1.2 mA | 2.25 mV
0.8 mA | 3 mV
0.6 mA | 4.5 mV
0.4 mA | 9 mV
0.2 mA | 18 mV
0.1 mA | 37 mV
0.05 mA | Specifications are warranted over a temperature range of 0-30°C with default local sensing. Above 30°C, derate output lineraly to zero at 70C.
(1) For input voltage variation over the AC input voltage range, with constant rated load.
(2) For 0-100% load variation, with constant nominal line voltage
(3) Maximum drift over 8 hours with constant line, load and temperature, after 30 minute warmup.
(4) Change in output per C change in ambient temperature, with constant line and load. | Operating Ambient Temperature:
0-30°C with default local sensing. Above 30°C, derate output linearly to zero at 7°C
Storage Temperature Range:
-55°C to +85°C
Humidity Range:
0 to 80% RH Non-condensing.
Front Panel Control:
10-turn voltage and one-turn current potentiometers (10-turn current control optional)
Front Panel Voltage Control Resolution:
0.02% of V max
Voltage Mode Transient Response Time:
<100 µs for output voltage to recover within 0.05% of previous level after step change in load current of up to 50% of rated output in the range of 25% to 100% or rated output.
AC Input:
104-127 Vac at 1.2 A rms, 57-63 Hz.
Maximum Voltage Difference from output to safety ground:
400 Vdc.
Agency Approvals:
CSA, CE
Specifications with optional RS-232/GPIB Interface:
GPIB - Internal GPIB Interface: Full feature GPIB programming with 14-bit resolution and software calibration.
RS232 - Internal RS-232 Interface: Serial instrument programming using the RS-232 protocol. | Models | XT7-6 | XT15-6 | XT20-3 | XT30-2 | XT60-1 | XT120-0.5 | XT250-0.25 | | Program Resolution | Voltage
Current
OVP | 1.1 mV
1.0 mA
1 mV | 2.4 mV
0.6 mA
2.4 mV | 3.1 mV
0.5 mA
3.1 mV | 4.7 mV
0.3 mA
4.7 mV | 9.3 mV
0.2 mA
9.3 mV | 17 mV
0.1 mA
17 mV | 39 mV
0.05 mA
39 mV | | Program Accuracy | Voltage
. Current
. OVP | 10 mV
±0.1% 110 mA
±0.15% 70 mV | 20 mV
±0.1% 70 mA
±0.15% 150 mV | 20 mV
±0.15% 50 mA
±0.15% 200 mV | 30 mV
±0.15% 40 mA
±0.15% 300 mV | 200 mV
±0.15% 260 mA
±0.15% 600 mV | 400 mV
±0.15% 130 mA
±0.15% 1.2 V | 800 mV
±0.15% 7 mA
±0.15% 2.4 V | | Readback Resolution | Voltage
Current | 1.1 mV
1.0 mA | 2.4 mV
0.6 mA | 3.1 mV
0.5 mA | 4.7 mV
0.3 mA | 9.3 mV
0.2 mA | 17 mV
0.1 mA | 36 mV
0.05 mA | | Readback Accuracy | Voltage
. Current
. | 10 mV
±0.15% 110 mA
±0.15% | 10 mV
±0.1% 70 mA
±0.15% | 10 mV
±0.1% 50 mA
±0.15% | 15 mV
±0.1% 40 mA
±0.15% | 35 mV
±0.15% 26 mA
±0.2% | 70 mV
±0.3% 13 mA
±0.2% | 150 mV
±0.3% 7 mA
±0.2% | Specifications with optional APG Analog Programming Interface APG - Internal Analog Programming Interface: Includes overvoltage protection (OVP), remote ON/OFF, master slave tracking. Remote Programming: 0-10 V or 0-10 kilohms = 0 to 100% of output voltage & current
Remote ON/OFF: TTL compatible, selectable logic high or low
Overvoltage Protection: Adjustable 3 V to Vmax +10%
Master/Slave Tracking: Within 1%
Output Fail Flag: Logic Low = Active
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