Lake Shore Model 647 Magnet Power Supply User’s Manual
Introduction
1-3
Agency Approvals
: The Model 647 complies with the following requirements:
UL 1244
- Electrical and Electronic Measuring and Testing Equipment
VDE 0411
- Electronic Measuring Instruments and Automatic Controls
FCC 15J
- Level A RFI Suppression
VDE 0871
- Level A RFI Suppression
Operating Ambient Temperature
: 15 to 35 °C (59 to 95 °F)
Dimensions
: 483 mm wide x 178 mm high x 508 mm deep (19 x 7 x 20 inches)
Weight
: 36.4 kilograms (80 pounds). Rack mounting is standard.
Table 1-1
Model 647 DC Output Specifications
SPECIFICATION CURRENT
VOLTAGE
Digital Programming Resolution:
Standard/High
10 mA / 1 mA
10 mV / 1 mV
Digital Programming Accuracy
0.1% I
MAX
1% V
MAX
Digital Programming Repeatability
0.01% I
MAX
0.1% V
MAX
Electronic Resolution:
Standard/High
4 mA / 1 mA
1 mV / 1 mV
Electronic Accuracy
0.1% I
MAX
0.1% V
MAX
Display Resolution: Standard/High
10 mA / 1 mA
10 mV / 1 mV
Stability (Drift) at 25 ±1 °C:
Percent of full scale
output change over 8-hours under constant line and load after
a 30 minute warm-up.
±0.005% I
MAX
±0.01% V
MAX
Ripple and Noise:
10 Hz to 10 MHz at 1000 VA
40 µA rms
20 mV rms
Temperature Coefficient:
Change in output per °C
after 30 minute warm-up.
0.1% I
MAX
0.1% V
MAX
Source Effect:
Line regulation for any line change within
the rated line voltage.
0.005% I
MAX
0.05% V
MAX
Load Effect:
Load regulation for a load change equal to
maximum voltage in Constant Current Mode or maximum
current in Constant Voltage Mode.
0.1% I
MAX
0.1% V
MAX
Analog Resistance Programming Accuracy:
0 to 10 K
Ω
produces negative full scale to positive full scale
current or voltage output. 5 K
Ω
is 0 current.
10% I
MAX
10% V
MAX
Analog Voltage Programming Accuracy:
Voltage input is ±0.01 V/A, ±0.01 V/V.
1% + 100 mA
2% + 100 mV
Monitoring Output Accuracy:
Voltage output is
±0.01 V/A, ±0.01 V/V.
1% + 100 mA
2% + 100 mV
