New monitor spec confusion - Low Impedance vs. Hi Impedance??

Bullwinkle

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New monitor spec confusion - Low Impedance vs. Hi Impedance??

I'm looking at picking up a brand new monitor for my missile command. I have found a source but there is a difference between the two options that I'm not sure about. Here are the specs:

Video Input: TTL 2.5~5.0VPP
Sync Input: TTL 2.5~5.0VPP Negarive for 5 pin Connector or Negative / Positive for 6 Pin connector-optional
H-Freq: 15.75KHZ
V-Freq: 48~65HZ
Res: 320x240
Bandwidth: 8MHZ
Signal Connector: 5pin (R,G,B,Gnd,Sync)/Standard or 6pin (R,G,B,Gnd,H+V,V)/Optional

Now the only spec that seems to be different between the two I'm looking at is...

monitor 1 = Suitable Vert. Low Impedance 9 ~ 15 ohm
monitor 2 = Suitable Vert. High Impedance Yoke 30~56 ohm

I'm assuming the first specs I posted work fine, but don't know which Impedance option I should be looking at. Also, will the standard signal connector work (5pin) or do I need the optional (6pin)?

Any help is appreciated.

thanks,

-tom
 
If this is a complete monitor, the impedance doesn't matter.

If this is just a replacement chassis to use with your existing tube & yoke then it does matter.

Regardless, you want the optional six pin connector since that is what is in your cabinet now.
 
If this is a complete monitor, the impedance doesn't matter.

If this is just a replacement chassis to use with your existing tube & yoke then it does matter.

Regardless, you want the optional six pin connector since that is what is in your cabinet now.

Ken,

It is a replacement for the existing monitor. Was going to try to use another monitor, but the only spare monitor I have with a decent tube is a Matsushita, which didn't seem to want to sync properly. (was odd that it wouldnt sync in my millipede either considering some millipedes had Matsushitas in them). In any case...think I want a new one for this game. Thanks for the info, much appreciated.

-tom
 
Ken (or anyone else that might know). The replacement came, but no manual. I've looked around the forums as well as online and nobody seems to be able to find the manual. The model is a Wei-Ya M2620HR. I want to do the 74LS04 modification but I'd need to know where I can find +5v power on the deflection board. They did not have the 6 pin configuration, so I was went with the 5 pin (standard sync) figuring I could do this mod. I suppose I could grab +5v from the power supply, but the thought of that doesn't sit well with me.

Any ideas?

Thanks,

-tom
 
Holy hell, while I was adjusting it, a ground wire tapped the back of the neckboard and poof..pic went out. I now hear a ticking noise ...guessing I blew the flyback? ...wow..talk about deflating.

DAMMIT! :(

Is there any way to use this tube with another monitor chassis? If I could marry it with a G07 chassis, I'd be happy. (long shot I know)

Edit: Just hunting around, I see it's unlikely I can just swap a chassis. If ever I felt like dropping a monitor out a 3rd story window..NOW would be that time!
 
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Update...

Well, apparently I did not mess up the chassis. I had adjusted the pots in an attempt to sync the monitor and apparently adjusted it beyond its capability and it shut down. Adjusted the pots back to center and the monitor fired back up...still out of sync. ... Which turned out that Missile Command uses posiitive sync by default and this is a negative sync only monitor. Thankfully Matt O brought to my attention that MC can do negative sync using pin 18. Much easier to finetune a monitor when it's sync'd correctly :).
 
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