Specific Troubleshooting Procedures

Troubleshooting - 3

Power-on Self-test Failures

The power-on self-test sequence tests most of the digital and DAC circuits. If the supply fails self-test, the display "ERR" annunciator will come on. You can then query the unit to find out what the error(s) are. When an error is detected, the output is not disabled so you can still attempt to program the supply to help troubleshoot the unit. Table 3-2 lists the self test errors and gives the probable cause for each error.

NOTE: A partial self test is performed when the *TST? query is executed. Those tests that interfere with normal interface operation or cause the output to change are not performed by *TST?. The return value of *TST? will be zero if all tests pass, or the error code of the first test that failed. The power supply will continue normal operation if *TST? returns a non-zero value.

Table 3-2. Self-Test Error Codes/Messages

Error Code	Description	Probable Cause
E1	Checksum in Read-only Non-volatile ROM	A2 Interface Bd
E2	Checksum in Config Non-volatile ROM	A2 Interface Bd
E3	Checksum in Cal Non-volatile ROM	A2 Interface Bd
E4	Checksum in State Non-volatile ROM	A2 Interface Bd
E5	Checksum in RST Non-volatile ROM	A2 Interface Bd
E10	RAM test failed	A2	Interface Bd
E11	12 bit DAC test failed, 0 is written to DAC U241A and B,	A2	Interface Bd
	ADC U242 is checked for 133 +/- 7 counts
E12	12 bit DAC test failed, 4095 is written to DAC U241A	A2	Interface Bd
	and 0 to B, ADC U242 is checked for 71 +/- 7 counts
E13	12 bit DAC test failed, 0 is written to DAC U241A and	A2	Interface Bd
	4095 to B, ADC U242 is checked for 71 +/- 7 counts
E14	12 bit DAC test failed, 4095 is written to DAC U241A	A2	Interface Bd
	and B, ADC U242 is checked for 10 +/- 7 counts
E15	8 bit DAC test failed, 10 and 240 are written to DAC	A2	Interface Bd
	U244, ADC U242 is checked for 10 and 240 +/- 7 counts
E80	Dig I/O test failed, SEC_PCLR written low and high,	A2	Interface Bd
	read back through Xilinx
E213	RS-232 input buffer overrun	A2	Interface Bd
E216	RS-232 framing error	A2	Interface Bd
E217	RS-232 parity error	A2	Interface Bd
E218	RS-232 UART input overrun	A2	Interface Bd
E220	Front Panel comm UART input overrun	A3	Front Panel/Display Bd
E221	Front Panel comm UART framing error	A3	Front Panel/Display Bd
E222	Front Panel comm UART parity error	A3	Front Panel/Display Bd
E223	Front Panel firmware input buffer overrun	A3	Front Panel/Display Bd

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.