LRF issue with Alpex 4k

[Tom Highway]

So got my Alpex 4k today, did not start well when trying to adjust the dioptic for my old eyes, the ring screwed of completely without adjusting anything ! asked the question on FB and it appears some are like this, you have to screw the ring back on as tightly as you can and then gently screw back out to adjust .... anyway got that sorted but cant get the LRF to measure ?? when i press the button the LRF readout just flashes and turns red, but gives no distance ? not sure if its something in settings not correct, or if its shagged ? any help would be appreciated, fast not becoming a fan of this "super" NV scops...

 

[Sakoodin1]

I have no idea about the alpex but on the pulsar thermion you need to A-press the rangefinder then B- press us again to get a read out??

 

[GGC96]

I’ve got the an Alpex 4K LRF - have you turned the function on in the settings?
Settings > Advanced settings > Laser Ranging > set it to once as continuous will range every X seconds and can lead to miss readings, once will be just when you press the button.

If that doesn’t work what distance are you trying to range? I’ve found that it won’t range less than 10m

 

[Tom Highway]

Yep ive got it turned on, and at first thought maybe ranging too close, so i stuck it out the backdoor at the trees in the wood behind the house all over 20 meters away, still no joy, i think perhaps it might be a battery thing, just charging up the internal battery to see if that does the trick, though i thought sticking in a fully charged external would provide enough power for the LRF, but i think the internal has to have enough charge for it to work ( i hope anyway LOL)

 

[camo304]

Yep ive got it turned on, and at first thought maybe ranging too close, so i stuck it out the backdoor at the trees in the wood behind the house all over 20 meters away, still no joy, i think perhaps it might be a battery thing, just charging up the internal battery to see if that does the trick, though i thought sticking in a fully charged external would provide enough power for the LRF, but i think the internal has to have enough charge for it to work ( i hope anyway LOL)

The unit does say to charge for more than 6 hours before use. Left mine on over night then put in a fully charged ex-battery.

 

[Tugmanade]

The LRF won’t work on my Habrok if the batteries are half charged, it just flashes red with no reading.

Ade

 

[Tom Highway]

Yep its battery thing, charged it for a few hours and stuck in the back yard all OK ranging fine, so whats the point of the externaly battery you put in ?

 

[GIMLET61]

My 4k also had issue with diopter, unscrewed when turned to focus.
Used a leather belt and got it to unscrew, when putting ring on, you will need to pop a couple of drops of red locktite on the thread, stopping it from coming off again.

 

[BLUEROLL]

Not sure if its just my unit but the LRF box stays in the main screen all of the time, is there any way to make it disappear after the ranging/holdover mark has appeared on the ret and only appear when you wake up the LRF again.
Also I have noticed that the holdover x does not appear on the ret in PIP box at the top of the screen, is it just my unit or have others found the same please ?
It would be nice if HIK could give you the choice of holdover marks (- or x) and colours like the Pard DS35.

 

[mealiejimmy]

The ret in the PiP box may be working in dial in mode
Range a target and get the holdover mark on the main ret
Put the holdover mark on the target and look at where the centre of the reticle in the PiP box is
If both the holdover mark and the centre of the PiP reticle are on the target, it means the PiP is working in dial in mode (that's what the Arken Zulus does)

Cheers

Bruce

 

[BLUEROLL]

The ret in the PiP box may be working in dial in mode
Range a target and get the holdover mark on the main ret
Put the holdover mark on the target and look at where the centre of the reticle in the PiP box is
If both the holdover mark and the centre of the PiP reticle are on the target, it means the PiP is working in dial in mode (that's what the Arken Zulus does)

Cheers

Bruce

Okay thanks Bruce. I will try to find something to clamp it in cos it isn`t going to be mounted on a rifle yet as it will be going to my Lad to do a comparison with his C50.
I think HIK should also try to reduce the size of the ret centre + and the remote dot, they should look at the size of the ret centre + in the Pard DS35 as a comparison.

 

[BLUEROLL]

The ret in the PiP box may be working in dial in mode
Range a target and get the holdover mark on the main ret
Put the holdover mark on the target and look at where the centre of the reticle in the PiP box is
If both the holdover mark and the centre of the PiP reticle are on the target, it means the PiP is working in dial in mode (that's what the Arken Zulus does)

Cheers

Bruce

Hi Bruce.
I checked it this morning and can confirm that with my unit the reticle in pip box is NOT dial in mode and the holdover x still does not appear on the pip reticle, so can other users try their units and let me know if it is a fault with my unit please ?

 

[BLUEROLL]

Not sure if its just my unit but the LRF box stays in the main screen all of the time, is there any way to make it disappear after the ranging/holdover mark has appeared on the ret and only appear when you wake up the LRF again.
Also I have noticed that the holdover x does not appear on the ret in PIP box at the top of the screen, is it just my unit or have others found the same please ?
It would be nice if HIK could give you the choice of holdover marks (- or x) and colours like the Pard DS35.

After a suggestion from a member on the NV forum I can confirm that a quick double tap on the LRF button does delete the box from the screen but not the holdover x

 

[Mr. Gain]

With apologies for introducing another Alpex LRF conundrum, but a buddy who has just started using his says he gets "unable to capture image" messages now and then. Sometimes it records. Sometimes it gives the error message. Has anyone else had this issue, and found a fix for it?

 

[sikasako]

My 4k also had issue with diopter, unscrewed when turned to focus.
Used a leather belt and got it to unscrew, when putting ring on, you will need to pop a couple of drops of red locktite on the thread, stopping it from coming off again.

Same thing happened on mine.
Looks like it’s a common fault.

 

[zerovarm]

My 4k also had issue with diopter, unscrewed when turned to focus.
Used a leather belt and got it to unscrew, when putting ring on, you will need to pop a couple of drops of red locktite on the thread, stopping it from coming off again.

Do you mean the knurled wheel on the diopter or the metal ring behind it that holds the recoil cup in place?

 

[BLUEROLL]

Same thing happened on mine.
Looks like it’s a common fault.

Yes same here.

 

[sikasako]

Not sure if its just my unit but the LRF box stays in the main screen all of the time, is there any way to make it disappear after the ranging/holdover mark has appeared on the ret and only appear when you wake up the LRF again.
Also I have noticed that the holdover x does not appear on the ret in PIP box at the top of the screen, is it just my unit or have others found the same please ?
It would be nice if HIK could give you the choice of holdover marks (- or x) and colours like the Pard DS35.

Just zeroed my 4K LRF Alpex this morning and can confirm that on mine the holdover x does not appear on the reticle in the upper PIP box either. As far as I could make out the aim point in the upper PIP box corresponded to the zeroed reticle point in the lower main screen, rather than the holdover x point. Which rather defeats the purpose of PIP when making use of the LRF ballistic holdover functionality.

 

[sikasako]

Just zeroed my 4K LRF Alpex this morning and can confirm that on mine the holdover x does not appear on the reticle in the upper PIP box either. As far as I could make out the aim point in the upper PIP box corresponded to the zeroed reticle point in the lower main screen, rather than the holdover x point. Which rather defeats the purpose of PIP when making use of the LRF ballistic holdover functionality.

Did an experiment with the 4K LRF Alpex today to check how the LRF / ballistic calculator / aiming reticles worked.

Fired 2 shots at left hand target (LRF’d @ 230m) using the holdover aim point without using PIP.

Fired further 2 shots at right hand target (LRF’d @ 230m) using the PIP upper reticle.

First 2 shots were on the bull area of the LH target.

Second 2 shots were below the bull area by a considerable amount, which equated to the holdover distance.

I’d have hoped that when using the LRF in conjunction with PIP, that the PIP reticle would have corresponded to the holdover point, but sadly it does not.

So bear that in mind when using PIP on the 4K LRF Alpex.

Maybe something that HIK could improve in future firmware update?

 

[20ppc]

Did an experiment with the 4K LRF Alpex today to check how the LRF / ballistic calculator / aiming reticles worked.

Fired 2 shots at left hand target (LRF’d @ 230m) using the holdover aim point without using PIP.

Fired further 2 shots at right hand target (LRF’d @ 230m) using the PIP upper reticle.

First 2 shots were on the bull area of the LH target.

Second 2 shots were below the bull area by a considerable amount, which equated to the holdover distance.

I’d have hoped that when using the LRF in conjunction with PIP, that the PIP reticle would have corresponded to the holdover point, but sadly it does not.

So bear that in mind when using PIP on the 4K LRF Alpex.

Maybe something that HIK could improve in future firmware update?

Or HIK could have made sure that it worked properly before releasing them to the public