2024年2月8日 · The 8656A uses a component 0960-0442, a Corcom F2058. There's still a few available on eBay, but they're all used, so chances are those RIFAs will be broken just the same.

2019年6月14日 · A 3.5 digit 4.5 digit 5 digit 5.5 digit 6.5 digit 7.5 digit DMM is good enough for most people.

2022年6月4日 · A very good point bd, and food for thought moving forward. I had assumed that since the missing parts left an open circuit in an essential part of the unit, that I ought to start …

Figure 3-7 of the manual (downloaded from Keysight) says: "Female BNC connector (J3) accepts an external 1, 5 or 10 MHz (+/-0.005%) time base reference input at a level of 0.2 to 0.4 Vrms …

2023年5月15日 · I checked the 1854-0247, and the DC voltages at the emitter and collector seemed a bit off compared to the schematic (+13V, -0.3V vs +11V, -0.7V).

2023年4月25日 · Great to see the 8656 information continue to flow, thanks for posting up swainster! It's really interesting to see the B version. The back transformer/power section is …

2019年10月14日 · Hmmm..Seems HP is real good at creating useless features, like HP-IB interface, Continuous fan running, Forgetful Storage.

2023年3月12日 · Pokin' around the web quickly affirmed the decision to spend just a little bit on this beast. Using bandwidth alone as a comparative criteria, even a modern unit from Asia is …

2019年2月3日 · It was set to -10dBm at the time, and turning it down to -30dBm did seem to make it a lot more reliable. But if it was a VSWR problem, wouldn't it behave like this with the output …

Products > Test Equipment. HP8656B fractional-n microprocessor (1/3) > >> ekoloski: Hi All, I have an otherwise functional 8656B that has experienced an interesting, and annoying fault.