Electronic counters
1 When the instrument is powered up, it should be preheated for a certain amount of time, and the stability of the crystal rate can reach the specified index, and the E312A-type general electronic counter is preheated for about 2 h. Attention should be noted that if accurate measurements are not required, the preheating time can be properly shortened.
2 When the signal is measured, it should be noted that the size of the voltage must not exceed the specified range, otherwise it is easy to damage the instrument.
3 When the instrument is used, pay attention to the influence of the surrounding environment, there should be no strong magnetic fields, electric field interference, and instruments should not be greatly vibrated.
4 Digital measuring instruments In the measurement process, due to randomness in the corresponding relationship between the opening time and the number of pulses sent in the gate, the measurement of ± 1 word is ± 1 word in the measurement results. Error, the phenomenon is the last digit of the display has a beating. In order to make it a relatively reduced, for various measurement functions, it should strive to make the measurement data have more effective digits. Suitably choose the gate time or periodic multiplication rate to achieve this.
5 The instrument should be checked first before the various measurements, to check if the instrument is normal. However, self-examination can only check the work of partial circuits, and it is not possible to explain that the instrument has no fault. For example, it is impossible to give a prompt to the A and B two input circuits, and the self-measurement cannot reflect the accuracy of the crystal oscillator frequency.
6 When using, pay attention to the adjustment of the trigger level, is especially important when measuring the pulse time interval, otherwise a large measurement error will be brought.
7 When using, the input coupling method should be properly selected as required.
8 When measured, the interference component of the measured signal should be reduced as much as possible to ensure the measurement accuracy.
Electronic counter function
The multi-function electronic counter is mainly composed of a single-chip or dedicated integrated circuit. The structure is small, and the functions are more flexible. In general, multi-function electronic counters, main features:
1. Add / subtraction (controlled)
2. Two-way count (automatic)
3. Low speed (digital filtering anti-interference)
4. Turn off the current (optional)
5. Segmentation alarm
6. Feedback output
7. Communication
8. Panel settings or remote settings
9. Memorial Network
Electronic counter products have greatly improved their original products than the original products of measurement resolution, accuracy and bandwidth. Many users say that they need to operate more simple instruments. Due to the continuous development of electronic technology, the overall structure of multi-function electronic counters is more compact, and the display mode and manipulation methods have also tended to be diversified, can be built, can be simple, flexible architecture, has become a new trend . Read more
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