Night Vision Forum at Nightvisionforums.com

Sgt. PEPITON · Joined: 05 Jun 2004 Posts: 3 Location: U.S.A.

hi y'all, new to the forum and to the world of night vision, im looking into gettin one of the monocular systems i've listed in the title. my questions are which one is better for the money? why? my limit is $400 with shipping and what not. i need a monocular that has the head set and dont like the viper at all. thank you all for your help in advance.
D-112 http://www.opticshq.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=Optics&Product_Code=D-112MG&Category_Code=NVG
D-3MK http://www.nightvisionoptic.com/goggles/d-3mk.htm

Sgt. PEPITON
Army JROTC

Michael · Posted: Sun Jun 06, 2004 10:39 am Post subject:

They are basically the same. The only difference is that the D-112MG has an additional bright light protection in the photocell to prevent the unit from being damaged and uses a single 3V CR123 instead of 2 N-size.

Sgt. PEPITON · Joined: 05 Jun 2004 Posts: 3 Location: U.S.A.

Sgt. PEPITON · Joined: 05 Jun 2004 Posts: 3 Location: U.S.A.

hmmm thats interesting no EDIT botton o well. i was wondering what additional things i should buy for the D-112MG i dont need them to have 3x 6x or anything like that i simply need them to work for 8-10 hours for about 150 yards with a clear image my limit is now $600 (arnt b-days great) also if you know of something better than the D-112 that has a head set and wont bust my budget let me know. thanks everyone.

Sgt. PEPITON
Army JROTC

Michael · Posted: Mon Jun 07, 2004 8:31 am Post subject:

To see those distances, I would suggest getting the 3X lens and a Long Range IR in addition to the D-112MG.

Tom · Joined: 16 Jun 2004 Posts: 65 Location: The Netherlands

Is there an button to switch the normal IR Illuminator off on the D-112?

Michael · Posted: Thu Jun 24, 2004 7:09 am Post subject:

Yes, there is a separate switch for the IR.

togn · Guest

hi,
Are you sure the D-3MK is only for the right eye, because i'm going to purchase one but i'd like it to work for the left eye.
Thanks

Michael · Posted: Fri Nov 12, 2004 7:38 pm Post subject:

Not positive, but fairly sure. You may want to check, and if we are wrong, please post a revision.

Guest · Posted: Sun Nov 28, 2004 3:31 pm Post subject:

Just one thing... Bright light protection systems come in two variants.

One system preventing you from turning on the NV in bright conditions.

The other one is a true bright light/flash protection system, which turns off the tube if suddenly exposed to bright light during operation.

It might be a question for the moderator, but which GEN1 units come with a true bright light protection system? The only one i know for sure features this system is the russian Yukon.

Best regards
Jacob

Michael · Posted: Mon Nov 29, 2004 12:40 am Post subject:

To the best of my knowledge, no gen 1 tubes have built-in shut down protection (Jacob, I am not saying you are wrong, I just never encountered it and I am fairly Very Happy

familiar with most products out there). The way the BSP works on the D-112MG, D-112, D-2MV, and D-211 for example, is it will prevent the unit from being turned on in bright light AS WELL AS shut it down (physically cut off power) when exposed (suddenly or not) to flash/bright light.

Guest · Posted: Mon Nov 29, 2004 5:48 am Post subject:

Well, if the small light sensitive resistor right next to the illuminator should cut off power to the high voltage generator, would'nt the risidual charge on the tubes still be able to damage the flourecent layer? I mean, normally it retains enough charge to keep an acceptable image for serveral minutes.

I've just run al little trail on my D2MV-pro to try and answer it myself. The tiny green LED indicator right above the right eyepiece should show wheather the generator is powered or not. The NV had the protective caps on at all times, with the tiny holes free.

The trail turned out like this:

The system does prevent the NV from beeing powered up in bright light conditions (I faced a lamp). The tiny LED does light up, but the tubes are not charged. Placing a finger over the light sensitive resistor, and the tubes fire up instantly. So far, so good.

However... Turning the activated (and charged) NV towards a lamp (was careful it was not too powerfull to damage the tubes, but powerfull enough to draw adequate power and activate the light sensitive resistor), the LED stayed on, but the image remained virtually constant for 30 seconds, then faded away within 10 seconds.

Conclusion on the LED: It only shows if there is power available for the generator or not. It does _not_ indicate if the generator is running or inhibited.

My concern is this: Even if the light sensitive resistor shuts down the generator the instance the NV encounters a brught light source, would'nt the risidual charge be enough to damage the tubes? I can't emagine the tubes discharging 30 seconds worth of charge within 20 miliseconds without severe damage. (the 20 miliseconds is a figure I got from Mr. Navitsky at Dipol. It's the maximum time a tube can be exposed to bright light before damage occours).

This question of wheather the dipol products, fitted with their bright light protection system, will really save my D2MV-pro from damage in a nightly surefire-packed airsoft-skirmish, is a nasty one. I don't have the stomach to put my beloved D2MV-pro to that test... This very question is the only thing holding people back from massive prchase and use of Gen1 equipment in Svandinavian Airsoft.

By the way. Take a look at the Yukon monocular/weaponsight. I have seen it cut off the image instantly at bright light conditions. It has a green power LED which shuts off. The unit powers up nicely again when re-activated. I think it's the real deal.

Best regards,
Jacob

Guest · Guest

Does the Yukon power on automatically after a brightlight shutdown or do you have to reactivate it manually??