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The front panel SRQ indicator is lit when the A requires service. Derive 6-monih test limits from Ohms Accuracy specifications listed in Table This is accomplished by measuring the offset and gain errors and mathematically correcting for them.
An integrat- ing amplifier U4 is used to maintain a dc level of 0 V dc at the output 3455q the Converter Amplifier.
Range Selection Keys – permit selection of ranges as follows: Dangerous voltages, capable of causing death, ore present in this instrument Use manuxl trome caution whoa handling, testing, end adjusting.
During the warranty period, Hewlett-Packard Company will, at its option, either repair or replace products which prove to be defective. The squaring amplifier is a log amplifier circuit which takes the manul of the input voltage, or in this case since there are two transistors Q9 A and QUA in the feedback loop, takes twice the log of the input voltage.
HP 3455A Operating And Service Manual
The SA reading should be within 0. This time may also vary from instrument to instrument. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. Outguard Troubleshooting Manal 8 8-A Other offers may also be available. When the Sample Rate buttons are pressed, kanual display rate of the reading are changed.
Seller assumes all responsibility for this listing. The balance of the reading is handshaken out. Identify parts by their Hewlett-Packard part numbers.
Reconnect the clip lead across the 1 megohm resistor. Field Office locations are listed at the back of the manual. The converter amplifier uses a dual FET input stage to maintain a high input impedance. The following is an example of a data message output by the A: Ohmmeter Accuracy Test Reconnect the msnual lead across the I megohm resistor. Set the AC Calibrator for an output of 1 V, 10 khz. It is possible for capacitors inside the instrument to manula be charged even if the instrument has been discon- connected from its power sources.
Auto-Cal Constants 8-B Uprange the dc standard to the V range. DC-CMR 1 1 0. There are 1 items available. Typical manufacturer of the part in a five-digit code.
Syntax of the ad- dress command portion of the data message is depen- dent upon the controller being used. Refer to Table for accuracy specification of each ac mode. Release the Standard Cell 3545a. For rated measurement accuracy, the SA should be allowed to warm up for at least one hour. Various examples using the scale mode are as follows: After the first measurement cycle is completed, mnaual delayed trigger will iniate a second measurement cycle.
Record the 34S5A reading: If a new trigger is received before the cal constant measurement is finished, the measure- manuaal is again aborted and a new input reading is taken. The multi- meter is shipped with the line voltage and fuse selected for V ac operation.
HP A Digital Voltmeter Operaiting & SERVICE Manual | eBay
The instrument will then update the cal constants for accurate measurements. The algebraic sum should be within the test Limits given in Tableverifying the 34S5A 2-wire ohms accuracy. Disconnect the 1 kilohm Standard Resistor and connect the K 3455aa resistor using the same 4- wire ohm measurement configuration. Minimum monthly payments are required.
Alternating or direct current power line. That is, the number being displayed may be stored in either the Y or Z register independently of the register selected by the ENTER keys. Included with this manual is an Operating information supplement. Backdating changes are denoted by a delta sign.