California Instruments 251TL Low Noise Linear AC Power Source 250 VA
Description
The TL Series consists of two models, 251TL and 351TL, both using linear technology. These units are ideal sources for special purpose AC power applications that require variable voltage and frequency at high frequencies and low noise and distortion levels. Both units provide single-phase output. With simple knobs used to set voltage, frequency and current limit, the TL Series provides an inexpensive source of low AC power. All TL Series power source models can be used in table-top mode or rack-mounted.
Using state of the art linear technology, the TL Series programmable AC power sources are ideally suited for applications where a low distortion, low noise sinewave is required Selectable input voltage ranges allow this power source to be used anywhere in the world to provide a convenient source of variable voltage and frequency power for testing and evaluating AC powered equipment. All common line voltage and frequency combinations are covered.
In addition, the frequency range extends to 8000 Hz, making these products suitable for both conventional and special purpose applications.
Accurate measurement functions are available as an option to eliminate the need for external test equipment in many test setups. Voltage, current, peak current, power, and power factor can be read directly on the large LCD display or over the bus.
Features
- Low Noise, Low Distortion
- 350 VA or 250 VA Output Power
- 16 Hz to 8000 Hz Frequency Range
- Precision Measurements
- Remote Control
Specifications
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Controller |
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Parameter |
251TL |
351TL |
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Type |
Programmable |
Programmable |
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Controls |
Digital Encoders |
Digital Encoders |
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Readouts |
dual 4 digit LCD's |
dual 4 digit LCD's |
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Non Volatile Setups |
1 (8) |
1 (8) |
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Output |
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Parameter |
251TL |
351TL |
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AC Power maximum |
250 VA |
350 VA |
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Load Connection |
Rear panel terminal block Floating neutral |
Rear panel terminal block Floating neutral |
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Voltage |
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High range / Low range |
0 – 270 V RMS |
0 – 135 V RMS |
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Accuracy 16-100Hz |
± 0.1 % FS |
± 0.1 % FS |
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Accuracy 100-5000Hz |
± 0.2 % FS |
± 0.2 % FS |
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Accuracy 5000-8000Hz |
± 0.3 % FS |
± 0.3 % FS |
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Resolution |
0.1 V |
0.1 V |
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Load Regulation <2000Hz |
0.1 % FS |
0.1 % FS |
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Load Regulation 2000-5000 Hz |
0.15 % FS |
0.15 % FS |
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Load Regulation>5000 Hz |
0.25 % FS |
0.25 % FS |
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Line Regulation |
± 0.02 % FS |
± 0.02 % FS |
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T.H.D. (into a resistive load) |
< 0.5 % |
< 0.5 % |
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T.H.D. (into a resistive load) 1000-8000Hz |
< 2.0 % |
< 2.0 % |
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Output Noise |
-.73 dB Max. |
-.73 dB Max. |
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Frequency (See V-F Rating Chart) |
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Range |
16-8000 Hz |
16-8000 Hz |
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Accuracy |
± 0.02 % |
± 0.02 % |
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Resolution 16-79.99Hz |
0.01 Hz |
0.01 Hz |
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Resolution 80-799.9Hz |
0.1 Hz |
0.1 Hz |
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Resolution 800-8000Hz |
1 Hz |
1 Hz |
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Current |
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RMS Current High / Low Vrange |
1.2 / 2.4 A RMS |
1.4 / 2.8 A RMS |
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Peak Current High / Low Vrange |
3.0 / 6.0 A peak |
3.0 / 6.0 A peak |
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Maximum Power Ratings |
The 351TL is rated for 350 VA of power down to 90 % of voltage range. |
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Protection |
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Adj. Current limit Resolution |
0.1 A RMS |
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Modes |
Const. Voltage or Const. Current |
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Over Temperature and Over Voltage |
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Input |
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Connection |
Rear panel terminal block |
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Line Voltage 2 wire + GND |
100, 115, 200, 230 ± 10% V RMS |
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Line Current |
< 16 A RMS |
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Line Frequency |
47 – 440 Hz |
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Holdup Time |
10 ms |
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Measurements (* Requires Option – OP1) |
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Current Range |
4.000 A RMS |
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Peak Current* Accuracy |
0.2 % FS + 0.3 % rdng |
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Peak Current* Resolution |
0.001 / 0.01 A RMS |
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Peak Current* Range |
12.00 A |
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Voltage* Accuracy |
0.5 % FS + 0.5 % rdng |
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Voltage* Resolution |
0.01 / 0.1 A |
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Voltage* Range |
0 – 300.0 V RMS |
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Power* Accuracy |
0.1 % FS + 0.05 % rdng |
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Power* Resolution |
0.1 V RMS |
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Power* Range |
400.0 W |
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Power Factor* |
Accuracy 0.5 % FS |
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Power Factor* |
Range 0.00 – 1.00 |
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Remote Control (* Requires Option –OP1) |
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Requires Option -OP1 Interface* |
RS232C and IEEE-488 |
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IEEE Functions |
SH1, AH1, T8, L3, RL2 |
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RS232C settings |
19200,8,n,1 |
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Command Language |
SCPI |
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Remote Inhibit* |
TTL in, active low BNC |
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Function Strobe* |
TTL out, active low BNC |
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Physical |
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Dimensions HxWxD |
5.25 x 19 x 22 inches |
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Weight (net) |
75 lbs / 34 kg |
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Vibration and Shock |
Designed to meet NSTA-1A |
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Temperature Operating |
0 to 40 ° C |
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Temperature Storage |
– 40 to + 85 ° C |
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