I’m from Europe and as you know I couldn’t buy good US IITs. So I want to buy a mini 14 with a Photonis tube. As I want to use the tube for many years (10+) it is important to me to buy a realy good tube. My dealer offered me the following tube types (XX3040GG/ XW3040B) which should be the best here available models of Photonis. I know the green tubes well but if the white phosphor tubes should be better they could be an alternative for me to the green ones.
My understanding is that the XW3040B tube is the white model of the green XX3040GG. Further my understanding is that both are 4G and intense tubes. Is it right? Are there some more differences?
Following the specs of the to me available tubes. Which tube should I choose and which green and which white model is the best?
XX3040GG
1. FOM 2000
S/N 30.9
65 lp/mm
output brightness 8.1
gain 18100
EBI 0.08
Image alignment 0.18
2. FOM 1900
S/N 29.4
65 lp/mm
output brightness 8.1
gain 18500
EBI 0.15
Image alignment 0.09
3. FOM 1860
S/N 28.6
65 lp/mm
output brightness 8.2
gain 18700
EBI 0.2
Image alignment 0.07
XW3040B
1. FOM 2040
S/N 31.4
65 lp/mm
output brightness 5.9
gain 12800
EBI 0.09
Image alignment 0.07
2. FOM 2030
S/N 29.4
69 lp/mm
output brightness 6.1
gain 12800
EBI 0.09
Image alignment 0.15
My understanding is that the XW3040B tube is the white model of the green XX3040GG. Further my understanding is that both are 4G and intense tubes. Is it right? Are there some more differences?
Following the specs of the to me available tubes. Which tube should I choose and which green and which white model is the best?
XX3040GG
1. FOM 2000
S/N 30.9
65 lp/mm
output brightness 8.1
gain 18100
EBI 0.08
Image alignment 0.18
2. FOM 1900
S/N 29.4
65 lp/mm
output brightness 8.1
gain 18500
EBI 0.15
Image alignment 0.09
3. FOM 1860
S/N 28.6
65 lp/mm
output brightness 8.2
gain 18700
EBI 0.2
Image alignment 0.07
XW3040B
1. FOM 2040
S/N 31.4
65 lp/mm
output brightness 5.9
gain 12800
EBI 0.09
Image alignment 0.07
2. FOM 2030
S/N 29.4
69 lp/mm
output brightness 6.1
gain 12800
EBI 0.09
Image alignment 0.15