Equipment information:

Hewlett Packard 5252A Other
Hewlett Packard
Model: 5252A
Date: 1965
Category: Measurement instruments
Group: Other
Description: Prescaler
                                    The Hewlett-Packard Model 5252A Prescaler Unit is a plug-in
unit which converts the Hewlett-Packard Model 5245L
Electronic Counter* into a direct reading counter from DC to
350 Me. Prescaling is accomplished, without tuning, by
transistor binary dividers, operating over the frequency
range DC to 350 Me. Multiple scaling factors (2, 4, or 8)
are provided to shorten scaling time at the lower frequencies.

The Model 5252A operates by electronically scaling the input
frequency, at the same time extending the counter's time
base an equal amount to provide the operator with a direct
readout of the input frequency. A LEVEL adjustment permits
counting of either positive or negative random pulses. A
front panel switch allows selection of a scale factor of 2,
4, or 8 that optimizes the amount the gate time (controlled
by the time base) is extended for agivenfrequency input.
Multiple scale factors allow measurements at lower freq
-uencies to be made without unduly extending the gate time,
while providing full capability for direct readout at higher
frequencies. For example, the multiplying factor of 8
required when measuring frequencies near 350 Me is not
necessary for measurements below 200 Me; hence, multiple
scale factors allow the operator to make lower frequency
measurements in less time.

These manuals are available for the above equipment:

Hewlett Packard -- 5252A -- Service and User Manual
File name: HewlettPackard-4902-Manual-Page-1-Picture
Manual Type: Service and User Manual
Pages: 37
Size: 18.73 Mbytes (19636560 Bytes)
Language: english
Manual-ID/Number: 02171-1
Date: September 1965
Quality: Scanned document, all readable.
Upload date:
MD5: cbb20cf2598f9af61c3ba3fd1ccc35d2
ed2kID: 5aded6a0ecdd0f1862692aecc91ba1fe
Downloads: 323 since 24 November 2013
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