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Universal Counter

Manufacturer: Hewlett Packard
Model: 5314 A

Description

100 MHz/100 ns Universal Counter. It features a seven-digit, seven-segment LED display with overflow indication, seven function performance, and full input signal conditioning. Seven measurement functions are: Frequency, Single-Shot Period, Period Average, Time Interval, Totalize, Ratio, and Self Check. This is accomplished by a single LSI integrated circuit. The input signal is AC coupled and can be conditioned as follows: slope selection, trigger level, and attenuation.

Specifications

INPUT Characteristics
Range	Channel A (10 Hz - 100 MHz)
	Channel B (10 Hz - 2.5 MHz)
Sensitivity	25 mV rms to 100/2.5 MHz. 75 mV p-p min. pulse with 5/50 ns (Channel A/Channel B).
Impedance	1 M Ohms NOMINAL shunted by < 30 pF.
Attenuator	X1 or X20 NOMINAL (Channel A only)

FREQUENCY (A)
Range	10 Hz to 10 MHz direct count
	1 MHz to 100 MHz prescaled by 10
Resolution	± LSD
Accuracy	± LSD ± (time base error) X FREQ

PERIOD (A)
Range	10 Hz to 2.5 MHz
LSD displayed	(100 ns) / N for N=1 to 1000
Resolution	± LSD ± 1.4 X (Trigger Error) / N
Accuracy	Resolution ± (time base error) X PER

TIME INTERVAL (A to B)
Range	250 ns to 1 s
LSD displayed	100 ns
Resolution	± LSD ± START Trigger Error ± STOP Trigger Error
Accuracy	Resolution ± (time base error) X T1.

LSD: Least Significant Digit.

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Operating Instructions

Turn unit ON and set COM A/SEP switch to SEP position
Connect input signal to INPUT A jack
- For frequency measurements, press FREQ A/START A IN. Make sure blue shift key is OUT. Set SLOPE, ATTN and LEVEL A as desired and select appropriate resolution and frequencies.
- For period measurements, press PER A/T.I. A->B switch IN. Make sure blue shift key is OUT. Set SLOPE, ATTN and LEVEL and select desired sample size.
- For one-source time interval measurements, press PER A/T.I. A->B IN. Press the blue shift key IN. Set SLOPE, ATTN and LEVEL A/B controls and set resolution switch to N=1 mode.
- For two-source time interval measurements, follow procedure for one-source setup but connect start-time interval signal to INPUT A and stop-time interval signal to INPUT B.
- For ratio measurements, make sure FREQ A and PER A buttons are both OUT. Connect higher frequency signal to INPUT A and lower frequency signal to INPUT B. Adjust SLOPE, ATTN and LEVEL A/B controls and select desired sample size.
- For totalize measurements, press FREQ A IN and blue shift key IN. Set SLOPE, ATTN and LEVEL A and connect input signal to INPUT A (for freq. > 10 MHz, the 100 MHz/10 Hz resolution switch MUST be pressed (IN).

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keywords: electrical measurement device, frequency measurement device, time measurement device.

Document created July 22, 1996. Original author: Jaime Espinoza.
Last updated 07/26/96. Revised by David Harrison.