Re: [time-nuts] LPRO-101 BITE (~lock) Signal Always Low

Hi, you can check the behaviour of the XTAL V MON voltage to get some useful information. It should move up and down during the searching of a lock, and then it should stop at a certain value when lock is achieved. Bye Luca iw2lje Il martedì 22 marzo 2016, Wayne (gmail)

[time-nuts] 10 MHz phase comparison using Bruel & Kjaer type 2971 phase meter

Hi All, while i was looking for an hp k34-59991A phase comparator on ebay in order to make some long term measurements of frequency drift of a dut against a reference (by logging the analog output of the meter) i found and bought a Bruel & Kjaer type 2971 phase meter instead of the hp. It is a

Re: [time-nuts] Schlumberger FA2527 ocxo

file/d/0B6ckpiy-AuMMaEs4cHh6NFhyOU0/view?usp=sharing > > > > > > Gianni > Il 25 gennaio 2016 12:32:29 +01:00, Luca Dal Passo <iw2...@gmail.com > <javascript:;>> ha scritto: > > > Hi group, > > Does anyone know something about the Schlumberger typ

[time-nuts] Schlumberger FA2527 ocxo

Hi group, Does anyone know something about the Schlumberger type FA2527 5MHz OCXO? It seems to be a good unit, with mumetal shield, coarse and fine frequency adj multiturn pots, fine temperature trimmer, good voltage regulator, good assembly and internal cylindrical thermal chamber surronded

Re: [time-nuts] 10811 unsoldered fuse

> Joe > > -Original Message- > From: time-nuts [mailto:time-nuts-boun...@febo.com <javascript:;>] On > Behalf Of Luca Dal Passo > Sent: Saturday, October 24, 2015 1:49 AM > To: Discussion of precise time and frequency measurement > Subject: [Bulk] Re: [time-nut

Re: [time-nuts] 10811 unsoldered fuse

; Dimitri > > > At 11:48 PM 10/23/2015, Luca Dal Passo wrote: > >> Hi all, >>i have on my desk a disassembled 10811 for service. It has a thermal >> fuse of the rectangular black type placed just above the IC. The leads are >> plugged into two very small so

Re: [time-nuts] 10811 unsoldered fuse

Hi all, i have on my desk a disassembled 10811 for service. It has a thermal fuse of the rectangular black type placed just above the IC. The leads are plugged into two very small sockets on the pcb, they are not soldered. Bye Luca iw2Lje Il giovedì 22 ottobre 2015, J. L. Trantham

Re: [time-nuts] REF,,HP3325A

Hi Pete, the hp3325B has a dipswitch on the rear panel to enable or disable the memory. If the memory is disabled, all settings and set ups are lost when you turn off the instrument. If the memory is enabled, all parameter and settings are maintained. Probably the same switch is prsent in

Re: [time-nuts] Synths for FMT

Hi Tim, is the received signals so strong that you can put them directly into a mixer without amplification and filtering? I.e. without the radio receiver? If not so, you can inject (couple) a local generated RF signal of well-known frequency into the RF input of the receiver in order

Re: [time-nuts] HP 10544A repair

Thank you very much Didier for your wonderful site and thank you again Charles for your precious schematic. Finally i'm able to understand something more! Ciao! Luca iw2lje Milano Italy Il domenica 3 maggio 2015, Didier Juges shali...@gmail.com ha scritto: The quarantine is officially over

Re: [time-nuts] HP 10544A repair

Ok, very good, many thanks Gianni, Corby, Charly, for your suggestions and hints! I will be here again if there will be interesting topics related with this item. Cheers Luca iw2lje Milano - Italy Il lunedì 27 aprile 2015, Charles Steinmetz csteinm...@yandex.com ha scritto: That reminds me --

[time-nuts] Hp 10544A repair

Hi all, Have anyone some experience about 10544A repair? I've recently fixed a 10811A, and it is relatively easy to disassemble, but 10544 has not screws and the manual does not deal about servicing. Can i try to open the box by removing the white plastic tips without demage something? And

Re: [time-nuts] HP5328A HP5328B option 040

Hi, another interesting item about the suffix letter topic, is the hp 8620 sweep generator. The 8620B is a very simplified version of the 8620A, not an improved one. It comes without markers, that is without some knobs, withouth some dials, and without some boards. The 8620C is a later

Re: [time-nuts] strange hp 5345A option C19

Hi Nigel, You are right. A previous user, made a very very bad fix There are some traks modified in the PLL board related to the external reference. Now I have to start with a complete restoration process. I have dismounted the counter and extracted the boards. Fortunately no other

Re: [time-nuts] strange hp 5345A option C19

Thank you Nigel for your comment. Now I understand the reason why it may be useful to have this additional external link. In the counter is fitted an oscillator model 10544A (instead of a more known 10811), but I think that it is the original one because the date code of the serial number is a

[time-nuts] strange hp 5345A option C19

Dear all, I have bought an HP 5345A. It’s ok and I’m very glad. On the rear panel it is wrote OPTION C19 (a little bit strange!) and there are two additional BNC installed on the little panel normally used to place the HPIB connector when present. These 2 BNCs are named REF OUT and REF IN