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| Marconi Adret 742B RF signal generator |
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| DoricLoon:
Hi I've just purchased a Marconi Adret 742B RF signal generator. Can't seem to find a manual for it anywhere. The best I've managed is a French version for the 740. The cheet sheet attached to the generator lists sweep parameters and their memory locations. Entering the first couple of sweep parameters start and stop frequency seems straight forward. The bit that has me foxed is how to set the "Frequency step and switching time by step" M92 in the case of band 1 sweep. Does anyone have an English manual for this generator or just keypress sequence instruction for setting sweep parameters? Thanks in advance Jim |
| Pinkus:
Yeah, it seems these Marconi generators are not very intuitive to use. I had one too (even older than yours) without a manual. Eventually I found one and kept it on my hard drive as I was to lazy to delete it (the Marconi was sold a few years ago). It is from a Marconi 2019A (80 Khz-1040 Mhz). Even this manual was hard to find a few years ago (maybe easy today .... or even harder). Please PM me with your mail adress if you are interested and I can send it to you. At least it might help to get an idea about what to enter where. |
| PA0PBZ:
Maybe you already found this, and it is only stating the obvious: http://midas.herts.ac.uk/helpsheets/signal%20generator.pdf |
| Gyro:
Sorry, can't help you with the 742. I have the original paper manual for my Adret 730A.... and yes, it is in French - I don't think they ever bothered to do English translations. |
| DoricLoon:
--- Quote from: Gyro on November 18, 2016, 09:04:34 pm ---Sorry, can't help you with the 742. I have the original paper manual for my Adret 730A.... and yes, it is in French - I don't think they ever bothered to do English translations. --- End quote --- Thanks yeah i have the French operators manual for the 730 and 740. I also have the English version of the service manual for the 730 can send you it if you want? --- Quote from: PA0PBZ on November 18, 2016, 06:56:49 pm ---Maybe you already found this, and it is only stating the obvious: http://midas.herts.ac.uk/helpsheets/signal%20generator.pdf --- End quote --- Yeah I also have that, unfortunately it's about all I can find regards the 742B. However I have now figured out how to do sweeps :-+ For anyone who needs to know. Enter frequency and amplitude for start frequency then key "M 9 0" Enter stop frequency key "M 9 1" Enter step frequency and then press the "FM" key enter step interval the key "M 9 2" To run the sweep key "SPL" "9 0" Hurray, works a treat. Only strange thing is, time is supposed to be mS and entering a max value of 1999 is stepping at more like 100mS The FM key to allow entry of the time variable was the bit that foxed me. There is "step" below the FM key. All the other labels are above the keys. Therefore each time I pressed what I thought was the step key I was entering a modulation depth value. If anyone does stumble upon a manual, even in French I'd appreciate a copy. Thanks Jim |
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