comparative measurement between different devices or conditions its accuracy can approach the 100db or 10db ranges precision of .1db or .01db, we’ll talk about that in Chapter 16.

To maintain accuracy the HP3586 does a 3 second duration automatic calibration, auto cal, when it’s first turned on, every two minutes during operation, if its frequency is changed more than 1MHz, and when a new measuring range width is selected. If any problems arise during calibration or during its operation the display will output error codes, which are described in Append B. For special reasons such as SSB audio tuning discussed in this document, the auto cal feature can be turned off at any time after its initial power up.

2.4The 004 Option – When I purchased my HP3586B I assumed it didn’t have the 004 enhanced frequency accuracy option but I noticed a 004 installed sticker on its back panel. Also there was an oven output connector installed on its back panel but no jumper from this connector to the external reference connector just to its right. I then removed the instrument’s top cover by loosening a screw in the back of the cover and sliding the cover off. To my delight I found a wire from the oven connector to a module labeled A16 installed to the RH rear of the instrument’s motherboard, which was the 004 option module with the 10 MHz crystal standard in a oven.

When I connected a jumper between these two connectors the oven light on my front panel came on for about 10 minutes and then went off. After the oven light went out indicating the crystal oven was up to temperature, checked WWV on 10 MHz using the counter procedure in section 5.3 of chapter 5 and found my instrument was within .7 cycles of 10 MHz when using the counter on WWV’s 10 MHz carrier. Without the jumper installed between the connectors, it was off by over 9 cycles so activating the 004 option made a great difference in the frequency accuracy of my instrument.

If the oven connector is installed on the back panel of your instrument but isn’t connected to the EXT REF connector to its right, look inside your instrument and maybe you will be lucky and have this valuable option. If your instrument has the A16 module installed, you must connect a jumper cable with two BNC male connectors to activate the option.

2.5Level Measuring Modes – The HP3586 family of instruments has the following modes for measuring signal levels:

SELECTIVE

See Chapters 4, 5, 6, 7 and 9

CARRIER

See Chapter 8

NOISE/DEMODULATION

See Chapter 10

WIDEBAND

See Chapter 11

IMPULSE

See Chapter 12

NETWORK ANALYSIS

See Chapter 14

TONE

Not Applicable

JITTER

Not Applicable

I have found the first six measurement modes useful for radio and audio measurements. The other modes are not normally useful because they are designed specifically for telephone measurements or require other not normally available specialized equipment.

All measurement modes discussed in this document apply to the A and B versions where the noise/demodulation, impulse and carrier modes are not available on the HP3586C general purpose version. However, I’ll show how to make noise/demodulation measurements with the selective mode using the C version.

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HP B, C, 3586A manual Selective
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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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