Help with "80 series Thermal imager" by insight vision services

[Niall135]

And more

[Niall135]

More

[Niall135]

More

[Niall135]

More

[Niall135]

Any help on the naming of the RV pots. Listed below.
Tube top Cam/Hap
Horiz
Vert
Ped level
Mid
Hf

80s/Cam/Fppc8
Dc level DA
Min flicker
A/O V upper
V lower
Line st
Field st
Dynamic gain
Shading

80s/Cam vppc6
Sfr
Gfr
Ccl in
Ccl size
Slr
Glr
Gfp
Sfr
Slf
G1
Greyscale con r
Greyscale bright
Ir peak white clip
Sync
Profile with
Profile black
Profile white
Profile level
Visual setup
Visual sync
Edge enhance
Blk level
Pan black level
Gain dist 733
Max gain 2nd 733
Min gain 2nd 733
-7v 2nd 733 level
+6 2nd 733

80s/ Cam HT pc6
Pan position
Chop test
Flyback with
Ir scan delay
V shift
V line
Field amp
H shift
N 11 H
H amp
Chopper zero pulse
Focus
Genlock
Soft auto beam
Hard auto beam
Hard manual beam
S ped
Polling beam
G 3
G3 flyback
G4 collapse beam

Coluriser
Passthrough to focus
Set + 10
Ir digts Amp
Set low
Set high
Lum Dc
Sand size
Sand pos
Burst pos
Burst size

Naming is so different to any other tic schematics ive seen.
And each board will have pots numbered from RV1 up.....

[Niall135]

Fraser, the lense is not in great nic.

[Fraser]

That is classic AR coating peel (de-lamination) on the lens. I see it a lot on older thermal cameras that have been stored somewhere damp. The peeling is not reparable but you may not notice much degradation in the image as this is a relatively non demanding imaging system.

Fraser

[Niall135]

Should i leave it as is or flake it off.

[Fraser]

Personally I wipe away the flakes to avoid them contaminating the interior of the camera later. As they are no longer attached to the Germanium surface they offer no benefit in terms of transmission. They are on the exit face of the lens so you will likely not see any optical issues, but do remember that there are hidden AR coated lens faces within the lens and these may be in similarly poor condition

Fraser

[Bill W]

Should i leave it as is or flake it off.

Remove yes, but treat with some caution, a lens that old it might be Thorium !
Definitely a wash hands afterwards etc

Bill

[Bill W]

70+ - ouch I thought my 30-odd was enough and I had a CRT monitor to deal with.
However nice to see them named and fairly obvious what is what in most cases.
Recognise a lot of the IC's as well, not surprising I guess.  Should mean the P4428 circuit and setup may be a reasonable guide

My best guesses in [........]

Bill

Any help on the naming of the RV pots. Listed below.
Tube top Cam/Hap
Horiz
Vert
Ped level   [G1 adjust in flyback to set video pedestal - note 'S Ped' below, so this might be hard tube only]
Mid
Hf

80s/Cam/Fppc8
Dc level DA     [Another adjust for the digital out that gets mixed back in for the steady chop mode image]
Min flicker       [Adjust combination of field store image and live image to minimuise flicker]
A/O V upper
V lower
Line st
Field st
Dynamic gain
Shading

80s/Cam vppc6
Sfr                 [Field ramp adjustment of video for shading of tube.  Adds a voltage ramp to the video to remove problems such as bright top & dark bottom ]
Gfr                  [Gain ramp in field ??]
Ccl in             [Circular blanking adjust - shape ?]
Ccl size         [Circular blanking adjust - size]
Slr                  [Line ramp adjustment of video for shading]
Glr                  [Gain ramp in line ??]
Gfp                [Gain parabola adjustment of video??]
Sfr                 [ As above or is it Sfp - Field parabola shading adjust (bright centre vs top/bottom edges) ]
Slf                 [ As above or is it Slp - Line parabola shading adjust (bright centre vs left/right edges) ]
G1                  [ G1 adjust tube beam in forward scan.  4uA]
Greyscale con r   [Later video adjustment ?]
Greyscale bright   [Later video adjustment ?]
Ir peak white clip   [Later video adjustment ?]
Sync                    [Set sync pulse height ?  Surely could be fixed ?]
Profile with              [To do with profile display, width of the line ?]
Profile black             [To do with profile display, black level ?]
Profile white             [To do with profile display, white level ?]
Profile level              [To do with profile display, ??]
Visual setup
Visual sync
Edge enhance         [Some kind of sharpening - adds high frequency gain to video maybe ?]
Blk level                   [Set video level of darkest part of image]
Pan black level          [Set video level of darkest part of image, additioanl adjustment of in pan mode - no chopper]
Gain dist 733           [Gain in head amp - LM733 IC]
Max gain 2nd 733    [Something else to do with head amp circuit LM733 IC Check datasheet ?]
Min gain 2nd 733     [Something else to do with head amp circuit LM733 IC Check datasheet ?]
-7v 2nd 733 level    [Something else to do with head amp circuit LM733 IC Check datasheet ?]
+6 2nd 733             [Something else to do with head amp circuit LM733 IC Check datasheet ?]

80s/ Cam HT pc6
Pan position            [Where the chopper stops in PAN, some mid level to part obscure the optosensor]
Chop test
Flyback with           [Flyback pulse width.  Adjust at peril as this is the first thing to set and may determine all the HT voltages.  Might be set for 10us ?]
Ir scan delay         [Timing between snyc pluse and line scan ?  I see no equivalent to P4428 'clamp pulse' adjustment]
V shift                      [Position of target in video frame - vertical]
V line
Field amp                     [Size of target in video frame - vertical]
H shift                      [Position of target in video frame - horizontal]
N 11 H
H amp                        [Size of target in video frame - horizontal]
Chopper zero pulse    [Motor DC condition on chopper, so PLL is not adjusting when running in phase]
Focus                         [Magnetic focus of beam onto target]
Genlock                     [See CD22402 datasheet]
Soft auto beam         [Setting beam G1 with feedback rather than fixed voltage ?]
Hard auto beam      [Setting beam G1 with feedback rather than fixed voltage ?]
Hard manual beam     [Setting beam G1 for hard tube]
S ped                       [A different circuit in use for pedestal on a soft tube ?]
Polling beam             [Beam when poling the tube - repairing crystal polarization ?  Voltage to use for poling ?]
G 3                       [Setting G3, voltage, can be used along with magnetic focus as has similar effect - beam focussing]
G3 flyback              [Must have had a reason for different G3 in flyback !]
G4 collapse beam       [Either simply set G4, or some extra function on G4 ?]

Coluriser             [All colouriser functions]
Passthrough to focus    [You need monochrome image to set up a camera !]
Set + 10
Ir digts Amp
Set low              [Bottom ADC level for bottom colour]
Set high              [Top ADC level for top colour]
Lum Dc
Sand size
Sand pos
Burst pos          [Colour burst timing]
Burst size          [Colour burst amplitude]

Naming is so different to any other tic schematics ive seen.
And each board will have pots numbered from RV1 up.....

[Niall135]

Thank you Fraser and Bill for all the help and advice on this series 80, but i have had no luck recomissioning the power supply.
The 12 battery input bypassing the 240v transforer did not help as the output voltages were still missing.
Replaced 2 suspect mosfets to no avail, i think power distribution pcb with the focus pots etc has succumbed to age (i know what that feels like). 
I should have taken Frasers sage advice ad not spent so much time and effort on it.
But all is not lost. I have TIC fever now and got my wife to buy me a DH-BF5421-T for my birthday. It came with a blackbody and 2 tripods.
My plan is to install the microbolometer in the series 80 body where i can utilise the large 35mm f.07 lens and the focusing servo.
So far so good as im getting great images in preliminary tests.  I just have to fabricate a carriage to get the sensor centralised. Ill post on this seperatly.
But this means all the boards from the series 80 are available for spares along with the pevicon tube. First refusal to Fraser and Bill. DM me if they are of interest.

[Fraser]

Hi Niall135,

Sorry to hear that the camera resisted your attempts to revive it.

I bought a BF5421 a while ago. Nice camera with a 400 x 300 pixel VOX FPA 

With regard to parts of the Series 80 camera that would be useful to me, the Pevicon tube and it’s associated deflection yoke might help me revive a French Sofretec Thermocam that I have so would be much appreciated 

All the best with your Series 80 conversion project 

Fraser