HP C, B, 3586A manual

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If you press [OFFSET] on this sub panel you’ll first see the offset in the measurement level offset register. If the number you want to enter is close to the present one in the data offset register, you can change the existing number up or down using the arrow keys, [↑] or [↓] and then press one of the db buttons and followed by [MEAS CONT].

4.8Frequency/Tune Group - On the lower right side of the front panel is the frequency/tune sub panel. This sub panel contains a knob, which is useful in fine-tuning the instrument’s frequency, especially to SSB signals. Different automatic tuning steps are selected for the selected filters using the [AUTO] button. Entry panel pre-programmed steps can be selected by pressing the frequency step button. The actual step size is entered on the entry sub panel for the [FREQ STEP] button. Pressing the off button can lock off the frequency tune function.

4.9Bandwidth Group - On the lower right is the bandwidth sub panel, which is used to select the instrument’s bandwidth that a power or voltage measurements are to be taken over. All models have 20Hz and 400Hz filters. The A and B versions will have one additional filter of 1740Hz, 2000Hz or 3100Hz. A and B versions may also have the optional WTD audio noise filter which is selected by a fourth button to be in series with the wide third filter. For now select the widest filter your HP3586 has.

4.10Audio Group - On the lower far right is the audio sub panel. This panel contains a small speaker and headphone jack along with a volume control knob for output of audio from the SSB detector. Since we won’t be using the audio output during our first measurements turn the volume knob full CCW to turn off the sound.

4.11Improving SSB Reception - This method that is not in the HP operator’s manual gets around the problem of these signals being very distorted in the instrument’s speaker due to the fact the automatic range level selection is acting as a AGC system for the SSB demodulator but because of its slow action there is heavy distortion on the onset of audio signals such as words. I first set the instrument in the 10db and auto range selection mode, press [10db] then [AUTO] on the frequency/entry sub panel if they aren’t on. Next press [AUTO] on the measurement/entry panel and tune the speaker’s audio for best possible audio. Then enter a frequency step of one Hz by pressing [FREQ STEP] on the entry panel and enter 1 followed by [Hz] and [MEAS CONT]. Now press [FREQ STEP] on the frequency/entry sub panel and again tune for best audio.

Now to improve the speaker audio by preventing over loading the SSB demodulator, lock the instrument into manual IF gain control by pressing [ENTRY] on the frequency/ entry sub panel. This will stop the IF amps AGC action and fix the gain of the IF strip to that of the last automatic setting. This should partially reduce distortion but to further reduce it, press [FULL SCALE] on the entry sub panel and use the [↑] key to move the range full scale setting shown on the level display up until the modulation peaks on the analog meter are near 1/3 scale and turn up the speaker’s volume if necessary. If you go too far and loose the audio, then press [↓] to increase the IF’s gain but I’ve found 1/3 scale on the analog meter gives best audio. You can experiment and find the best IF gain setting by entering smaller and larger limits using these keys just like you would using a manual RF or IF gain control knob on your receiver. If you get UL or OL on the level measurement display, don’t worry if your just tuning or listening to SSB, this only indicates level measurements are inaccurate. Also to not have your SSB signal interrupted during tuning or monitoring, turn off auto cal. However when doing level measurements, always have auto cal back on and press [AUTO] on the measurement/entry sub panel when your doing signal level measurements.

4.12Back Panel Oscillator Output – On the HP3586’s back panel is located a female BNC connector labeled Fo that supplies an output of 0 dbm, 75 ohm from the internal tracking oscillator. Its frequency will always equal to the frequency of the selected filter’s center band pass frequency. This output is disabled in the wideband measuring mode.

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Contents Version 2.0, September Table of Contents Introduction Description of the HP3586 Page Selective Signal Connections Front Panel Description and Initial SET UP Page Page Setting and Measuring Frequency Page Power Level Measurements Using the Selective Mode Page Voltage Level Measurements Using the Selective Mode Measuring Carrier Signal Strength Tuning SSB Signals Using the Selective Mode Filter Band Width Carrier Offset Tuning a SSB Signal Using the NOISE/DEMODULATION Mode Measuring Audio Noise Using the Wideband Mode Measuring Impulse Noise Measuring Audio Harmonic Distortion Page Passive and Active Network Analysis Page Measuring a TRANSMITTER’S Spurious Emissions Page Selection of Measurement Modes and Other Considerations Page Page Appendix a Understanding the Decibel Ratio Measuring SystemNumber Ratio Power DB Ratio Page HP3586 Error Codes Appendix BSchematics for Useful HP3586 Accessories Appendix C
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B, 3586A, C specifications

The HP C3586A and C3586B tape drives are notable components in the realm of data storage solutions, primarily designed for enterprise-class environments. These SCSI (Small Computer System Interface) tape drives are regarded for their efficiency, reliability, and capacity to meet the growing demands of data backup and archival processes in businesses.

The C3586A model utilizes the DAT (Digital Audio Tape) technology, which allows it to deliver high performance and high data density. It features a native capacity of 2.3 GB per cartridge, which can be extended to 4.6 GB with the use of compression. This is particularly advantageous for businesses requiring significant amounts of data storage without the necessity for multiple tapes. The transfer rate is rated at up to 12 MB per minute, which ensures quick backups and restores, minimizing the operational downtime.

In terms of data integrity and security, both models incorporate advanced error correction techniques to guarantee that data remains pristine and intact throughout the storage duration. They are designed to work seamlessly with a variety of operating systems and backup applications, enhancing compatibility and user convenience.

The HP C3586B, on the other hand, offers similar foundational technologies but with enhanced features. It supports higher capacity tapes and is engineered to work seamlessly in high-performance environments. With the integration of SCSI-2 interfacing, users can expect faster data transfer rates, which is critical for organizations dealing with large volumes of data.

Another key aspect of both models is their rugged design, which provides durability and reliability needed for long-term storage solutions. The drives are built to withstand extended usage, which makes them a cost-effective choice for businesses looking to invest in dependable data storage systems.

Furthermore, these drives come with a user-friendly interface and straightforward maintenance. This allows IT personnel to handle backups with ease while keeping the workflow uninterrupted.

In summary, the HP C3586A and C3586B tape drives epitomize the union of technology, usability, and dependability. Their robust features, including high data capacity, fast transfer rates, and durable construction, make them a formidable choice for enterprises seeking efficient data backup and archival solutions in the ever-evolving digital landscape.
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