Re: [time-nuts] OT - Tek 7L18 ROM

2009-11-09 Thread Chuck Harris
Hi Dave, That is an issue that needs to be re-emphasized. You can't read the EPROMS in a 7L18 without using multiple rail supplies. +5V alone won't do it. Also, the 7L18 draws too much power for any of the 4 slot scopes. In spite of what the manual says, It is designed to operate in one frame

Re: [time-nuts] OT - Tek 7L18 ROM

2009-11-09 Thread J. Forster
There is also a tekscop...@yahoogroups.com which is a LOT more tolerant of random questions. -John As below, get on the TekScopes list for more info. teksco...@yahoogroups.com is the one to go for. Someone has also started a Microwave equipment group too.

Re: [time-nuts] OT - Tek 7L18 ROM

2009-11-09 Thread Didier Juges
...@erols.com Date: Mon, 09 Nov 2009 08:12:54 To: Discussion of precise time and frequency measurementtime-nuts@febo.com Subject: Re: [time-nuts] OT - Tek 7L18 ROM Hi Dave, That is an issue that needs to be re-emphasized. You can't read the EPROMS in a 7L18 without using multiple rail supplies. +5V alone

Re: [time-nuts] OT - Tek 7L18 ROM

2009-11-09 Thread Adrian
@febo.com Subject: Re: [time-nuts] OT - Tek 7L18 ROM Hi Dave, That is an issue that needs to be re-emphasized. You can't read the EPROMS in a 7L18 without using multiple rail supplies. +5V alone won't do it. Also, the 7L18 draws too much power for any of the 4 slot scopes. In spite of what

Re: [time-nuts] OT - Tek 7L18 ROM

2009-11-09 Thread Christopher Hilton-Johnson
Chuck Harris wrote; That is an issue that needs to be re-emphasized. You can't read the EPROMS in a 7L18 without using multiple rail supplies. +5V alone won't do it. The ROMS in the -01 version of the micro board are MCM68316E and are 5v items. Also, the 7L18 draws too much power for any of

[time-nuts] OT - Tek 7L18 ROM

2009-11-07 Thread Adrian
Hello all, I have an old 7L18 spectrum analyzer that used to serve me well on the higher bands. Unfortunately, the controls have got into complete disorder. It seems like one or both of the ROM's are dead. Anyone have / knows where to find ROM images of the 7L18? Thanks, Adrian

Re: [time-nuts] OT - Tek 7L18 ROM

2009-11-07 Thread Christopher Hilton-Johnson
Hello all, I have an old 7L18 spectrum analyzer that used to serve me well on the higher bands. Unfortunately, the controls have got into complete disorder. It seems like one or both of the ROM's are dead. Anyone have / knows where to find ROM images of the 7L18? Adrian Can I suggest you post

Re: [time-nuts] OT - Tek 7L18 ROM

2009-11-07 Thread Adrian
Christopher Hilton-Johnson schrieb: Hello all, I have an old 7L18 spectrum analyzer that used to serve me well on the higher bands. Unfortunately, the controls have got into complete disorder. It seems like one or both of the ROM's are dead. Anyone have / knows where to