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8340B option removal

Steve - Home All Messages By This Member #143323 Has anyone had occasion to remove option 006 and restore the pulse modulation feature on an 8340B? The one I’m looking at seems to have all the hardware in place (A21 pulse modulator board, A9 low band pulse modulator, A16 high band pulse modulator) just like the unit next to it but selecting pulse modulation gives me an “option not installed” error message. I’ve changed cal constant 60 Configuration to match the 8340B with pulse modulation but I still get the error message. I no longer have access to the 08340-10009 software package and I remember it having a “Utility” menu that allowed you to change the option configuration. If it’s not a simple cal constant change, is there something I’m missing somewhere? Thanks, Steve
saevar All Messages By This Member #144479 I have two 8341B, one with the "option not installed" notification and the other without. I have swapped A60 boards and the notifcation follows the A60 board into the other machine. I have also tried to copy all the EPROM content from one without to the other with the notification, but no change. I have not tried any further, but I felt it was worth mentioning.
Steve - Home All Messages By This Member #144480 开云体育 When do you get the “option not installed” message? Constantly or when you try to select a particular function? Steve toggle quoted message Show quoted text On May 20, 2024, at 5:05?AM, saevar via groups.io <saevartj@...> wrote: ?I have two 8341B, one with the "option not installed" notification and the other without. I have swapped A60 boards and the notifcation follows the A60 board into the other machine. I have also tried to copy all the EPROM content from one without to the other with the notification, but no change. I have not tried any further, but I felt it was worth mentioning.
Bruce All Messages By This Member #144487 As far as I know the options are determined by jumpers on the CPU board (upper right as I remember - but not absolutely sure) - think all the options are supported in the firmware and jumpers determine if they are activated. Cheers! Bruce
Steve - Home All Messages By This Member #144488 开云体育 Actually, no. The options are set in the calibration constants, except for 006 (delete pulse modulation) and 007 (relaxed phase noise specification). 007 is a hardware thing, 006 is on the A60 board and I suspect it’s in the EEROMs and the service software must talk to them. I have had several 8340Bs and 8341As with various combinations of options and the jumpers on A60 the CPU card are all closed on all boards. I have a spare processor card and after some upcoming travel I’m going to socket all of the programmable devices and do some experimenting. Substituting a DIP switch for the jumpers will be part of the game as I’m really curious about their function. They’re not mentioned in any of the manuals I have.? There is also a procedure in the service software about loading “all three strings” for the options so I need to get my Series 200 back online and play with that a bit, too.? Steve toggle quoted message Show quoted text On May 20, 2024, at 2:32?PM, Bruce via groups.io <bruce@...> wrote: ?As far as I know the options are determined by jumpers on the CPU board (upper right as I remember - but not absolutely sure) - think all the options are supported in the firmware and jumpers determine if they are activated. Cheers! Bruce
saevar All Messages By This Member #144520 I got the notification when I tried to select fm modulation.
Bruce All Messages By This Member #144523 I would be interested in the result.? As I remember, the jumpers are labeled option (or option configuration) an the A60 schematic. I do know that the attenuator option is controlled by the attenuator plug on the RF board. Cheers! Bruce
Steve - Home All Messages By This Member #144524 开云体育 That is odd as there is not a standard option to remove the fm capability. Steve toggle quoted message Show quoted text On May 21, 2024, at 6:41?PM, saevar via groups.io <saevartj@...> wrote: ?I got the notification when I tried to select fm modulation.
Steve - Home All Messages By This Member #144525 开云体育 Can you scan the schematic that shows the jumpers, that would be a huge benefit to everyone. The schematic that I have doesn’t show it.? The attenuator option, adding or deleting the attenuator, is not just the plug, you also need to change the cal constant for attenuator configuration. I have two on the bench right now and after we return from our travels I’ll try installing an attenuator and not changing the cal constant. From memory (which may not be 100% these days) the attenuator didn’t work until the cal constant was changed.? Steve toggle quoted message Show quoted text On May 21, 2024, at 7:40?PM, Bruce via groups.io <bruce@...> wrote: ?I would be interested in the result.? As I remember, the jumpers are labeled option (or option configuration) an the A60 schematic. I do know that the attenuator option is controlled by the attenuator plug on the RF board. Cheers! Bruce
Bruce All Messages By This Member #144540 I'll be traveling for the next several weeks - we can pick this up when I (and you) return to our normal chaos !
Steve - Home All Messages By This Member #144542 开云体育 Sure thing, looking forward to it. I always learn from the discussions on this forum. Safe travels, wherever they may take you! toggle quoted message Show quoted text On May 22, 2024, at 11:46?AM, Bruce via groups.io <bruce@...> wrote: ?I'll be traveling for the next several weeks - we can pick this up when I (and you) return to our normal chaos !

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