Option package consists of a board in the A, a ribbon cable and a board for the Fluke A IEEE Translator. The 1 A must be used to interface A. Fluke A Benchtop Timer/Counter. A broadband continuously variable, x, analog attenuator lets you add just enough attenuation to minimize the input. Here you will find a large selection of new and used Fluke A listed at special prices. Although some items match several categories, all of them are listed.

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This function can be used to measure the period of an input signal with frequencies from 5 Hz through 1 MHz. During normal operation, the battery and its load are connected, Fljke and Q6 are off and Q5 is in saturation. Time Interval Logic Connect an oscilloscope to U and look for a TTL wave form representative of the input frequency. To disassemble the instrument, use the following fluoe The OVFL annunciator wili illuminate when the capacity of the internal seven-decade accumulator is exceeded.


During event timing functions, an internal oscillator frequency is counted for a period determined by the input signal.

With a completely discharged battery, charge time is a minimum of 1 6 hours at room temperature. Each block performs the following operations: A complete list 725a0 these service centers is included in Section 7 of this manual. Digits are derived from similiar ojunters and applied to 4-bit latches.

Full text of “FLUKE A Instruction”

Table recommends test equipment to be used when troubleshooting. Low Battery Voltage 725a Circuit Observe static sensitive precautions. Repeat steps 4 and 5 for each frequency change.

Resolutions vary from ns to 1 ps. Learning the guidelines for handling them. Fuse Replacement The accuracy of the event timing functions can be improved by using the appropriate averaging function. Different circuit logic levels will fluuke encountered. Use the following procedure when cluke these molded cases together: A measurement sequence is initiated for each step; if, at the end of a sequence, the counter is not set to the maximum allowable resolution step, either a new measurement sequence is begun at the next higher resolution or the display is updated.


Press the power switch to ON. Verify that vluke DVM reads battery voltage. The display will then show the total count of the reference frequency for the period of one cycle of the input frequency. In addition, remove the short on SB6 for the 1 A only. The Model A is a seven-digit universal counter-timer capable of measurements in frequency, period, period average, lime interval, totalize, ratio, and self check mode. If grease is encountered, spray with Freon T.

Each change generates an internal reset. Use the following procedure flike install the Battery Option.

Fluke 7250A Timer Counters

C2 has been charged to make Q2 conduct long enough to insure that Kl is latched in the open condition. If the original container is not available, a new container can be obtained from the John Fluke Mfg.

Period Test Line Voltage Selection On receipt oftheshlpping instructions, forward the instrument, transportation prepaid.