Current Sink -CC Operation | Agilent Technologies 66332A, 6634B

Verification and Performance Tests - 2

e.Divide the voltage drop (DVM reading) across the current monitoring resistor by its resistance to convert to amps and record this value (Iout). Also, record the current reading that appears on the front panel display. The readings should be within the limits specified in the performance test record card for the appropriate model under CC PROGRAMMING @ FULL-SCALE.

Current Sink (-CC) Operation

This test verifies current sink operation and readback.

a.Turn off the supply and connect the output as shown in Figure 2-1a, except connect a dc power supply in place of the electronic load as indicated. Connect the DMM across the current shunt.

b.Set the external power supply to 5 V and the current limit approximately 20% above the full scale current rating of the supply under test.

c.Turn on the supply under test and program the output voltage to zero and full scale output current. The current on the UUT display should be approximately full scale current negative.

d.Divide the voltage drop across the current monitoring resistor by its resistance to obtain the current sink value in amps and subtract this from the current reading on the display. The difference between the readings should be within the limits specified in the performance test record chart under CURRENT SINK READBACK.

Low Range Current Readback Accuracy

This test verifies the readback accuracy of the 20 milliampere current range.

a.Turn off the supply and connect the output as shown in Figure 2-1b. Set the DMM to operate in current mode.

b.Turn on the supply under test and program the output voltage to zero and full scale output current. The current on the UUT display should be approximately 0 mA.

c.Record the current reading on the DMM and the reading on the front panel display. The difference between the two readings should be within the limits specified in the performance test record chart under 20mA RANGE CURRENT READBACK ACCURACY @ 0A.

d.Program the output voltage to 20V and record the current reading on the DMM and the reading on the front panel display. The difference between the readings should be within the limits specified in the performance test record chart for the appropriate model under 20mA RANGE CURRENT READBACK ACCURACY @ 20mA

e.Turn off the supply and connect the output and an external supply as shown in Figure 2-1c. Set the DMM to operate in current mode.

f.Turn on the external supply and program it to 20 V and 1 amp. Then program the supply under test to zero volts and 1 amp. The UUT display should read approximately −20 mA.

CC Load and Line Regulation

These tests (CC Load Effect and CC Source Effect given below) are tests of the dc regulation of the power supply's output current. To insure that the values read are not the instantaneous measurement of the ac peaks of the output current ripple, several dc measurements should be made and the average of these readings calculated. An example of how to do this is given below using an Agilent 3458A System Voltmeter programmed from the front panel. Set up the voltmeter and execute the "Average Reading" program follows:

a.Program 10 power line cycles per sample by pressing NPLC 1 0 ENTER .

b.Program 100 samples per trigger by pressing (N Rdgs/Trig) 1 0 0 ENTER .

6632B, 6633B, 66332A, 6634B specifications

Agilent Technologies, a leader in electronic test and measurement solutions, offers a range of power supplies designed to meet various application needs. Notable models include the 6632B, 6634B, 66332A, 6633B, and 6612C. Each of these units provides unique features and technologies that cater to researchers, engineers, and technicians in the industry.

The Agilent 6632B is a single-output DC power supply that delivers up to 30V and 3A. It is known for its excellent load regulation and low noise, making it ideal for sensitive electronic testing. The model includes built-in voltage and current measurement capabilities, allowing users to monitor output conditions in real time. The 6632B is commonly used in laboratory environments, educational institutions, and manufacturing lines.

Moving to the 6634B, this model offers dual-output capabilities with a maximum output of 30V and 6A. This versatility enables simultaneous powering of two different devices or circuit sections. It also features parallel and series operation options, allowing users to create a custom power supply configuration for specific applications. With a programmable interface, the 6634B simplifies test automation, ensuring efficiency in extensive testing scenarios.

The Agilent 66332A stands out with its precision and high performance. This power supply provides three outputs—two programmable and one fixed—yielding flexible power configurations. Its intuitive user interface allows easy adjustment of voltage and current settings. The device is equipped with extensive protection features to safeguard both the power supply and the connected load against faults. It is an excellent choice for complex testing setups that require reliable power.

The 6633B model offers a high-performance power supply with dual outputs, similar to the 6634B but with enhanced specifications. It can provide up to 40V and 2A per channel, delivering precision for demanding applications. This model is particularly suited for industries focused on high-reliability applications, such as telecommunications and aerospace.

Lastly, the Agilent 6612C is a compact and lightweight power supply providing single-output up to 60V and 2A. This model is designed for simplicity and ease of use, making it an excellent choice for portable applications. The 6612C’s unique characteristics include a compact design and user-friendly controls, which facilitate operation in field settings.

In summary, Agilent Technologies’ power supply models—6632B, 6634B, 66332A, 6633B, and 6612C—offer an array of features that cater to a wide range of testing and research needs, ensuring reliable power delivery in various contexts.