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Aeroflex (IFR) Questions

This forum exists for the purposes for discussing service monitors (This includes but is not limited to Motorola, HP, Aeroflex, GD, etc). Additional topics allowed include test procedures, interpretation of test results, where to find information about specific tests, antenna VSWR, return loss testing, duplexer and filter alignment, etc.

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fineshot1
Posts: 1032
Joined: Wed Oct 12, 2005 5:13 am

Re: Aeroflex (IFR) Questions

Postby fineshot1 » Thu Jan 24, 2019 6:04 am

jry wrote:same as the 1600 ( more or less ) ...10 Mhz oscillator mounted on rear panel....1900 has a bracket around it


Yes - I see it now but its tough to see on my one pic that would show it due to the the pic is too dark and not enough light.
Now out of curiosity as well just would like to identify if its one of the commonly made oscillators such as
Toyo, Isotemp, Morion, Piezo, Vectron, etc or perhaps it was made by IFR?

Thanks
fineshot1
NJ USA

GlennD
Posts: 482
Joined: Tue Jun 15, 2004 8:00 am

Re: Aeroflex (IFR) Questions

Postby GlennD » Thu Jan 24, 2019 5:42 pm

I have a reference TCXO out of a parts 1500. I would sell it for %50.

fineshot1
Posts: 1032
Joined: Wed Oct 12, 2005 5:13 am

Re: Aeroflex (IFR) Questions

Postby fineshot1 » Fri Jan 25, 2019 6:27 am

GlennD wrote:I have a reference TCXO out of a parts 1500. I would sell it for %50.


You mis-understand what i am asking for.

I am NOT trying to buy one - simply attempting
to identify make and model if possible.
fineshot1
NJ USA

GlennD
Posts: 482
Joined: Tue Jun 15, 2004 8:00 am

Re: Aeroflex (IFR) Questions

Postby GlennD » Fri Jan 25, 2019 11:50 am

There are no markings but IFR;s on the unit. It is the same for the 1200. 1500,1600 and maybe others.

fineshot1
Posts: 1032
Joined: Wed Oct 12, 2005 5:13 am

Re: Aeroflex (IFR) Questions

Postby fineshot1 » Mon Jan 28, 2019 7:32 am

You would probably have to remove it from the mounting bracket
in order to see the actual oscillator module on the small pc board.
The small module would not be easy to see while still mounted to
the bracket that is mounted on the rear panel.
fineshot1
NJ USA

fineshot1
Posts: 1032
Joined: Wed Oct 12, 2005 5:13 am

Re: Aeroflex (IFR) Questions

Postby fineshot1 » Wed Mar 06, 2019 6:27 am

BTW folks - Areoflex/Cobham is now Viavi solutions.

https://www.viavisolutions.com/en-us/pr ... -test-sets
fineshot1
NJ USA

LZ1IM
New User
Posts: 10
Joined: Mon Nov 07, 2016 4:34 am
What radios do you own?: Collins 51S1, Maxon HR146

Re: Aeroflex (IFR) Questions

Postby LZ1IM » Mon May 13, 2019 5:10 am

Hi to All,

it's been a long time of experimenting for changing original EL560.400 of COM120B with TFT-LCD, but it was worth it!
Now, let's do it in turn:
I start with HS, VS, Clock and Data lines present at the connector J1 /Sheet 5 Video CNTR/.
First problem was that EL560.400 have 560x400 pixels, and TFTLCD with 4:3 format have 640x480 pixels.
So, I need some double port RAM with controller, and I found SSD1963 as appropriate IC to drive TFTLCD.
Second, I found out that Video CNTR of COM120B send 624 pixels/line /560 Video + 56 garbage /before video/ +
8 pixels Horizontal Sync /active 0/. 56 pixels Delay of HS solve that, with help of uController and some logic ICs.
Next, another problem. In modes, like Oscilloscope and Analyzer, also in text modes, where are also graphics
/Oscilloscope, analyzer, and bars showing parameters /Voltage, SINAD, Power, etc./ designer at IFR made a remarcable trick:
That is, he want to make grid and bars less brighter then rest of frame, and he solve that with sequentally switch
on and off pixels of, say grid in analyzer mode or other fields of interest, and that sequence walk p-frames on, then q-frames off,
and again, and again...
It seems like PWM, and thanks of persistence of phosphor, which is base of EL display, that persistence acts as a Low-pass filter,
and everithing is great for EL display.
Well at TFT-LCD there is different situation. TFT-LCD has minimum persistence /it is fast!/, and our eyes see grid blinked
at high rate, of course, but seen. After 5-10 minutes, eyes got tired.
At Sheet 11 Video CNTR, designer wrote EL Flat panel Display, 560x400, 4 Shades. And at Sheet 5, one would see that
"responsable" for that is U17 and /maybe/ U4.
So, I check signals that are inputs for U17 /named Red, Green, Blue and INT/. INT is of no interest at that moment.
RED signal containing good part of the frame - text, trace, bars without grid.
GREEN signal containing trace and bars.
BLUE signal containing grid.
So, I connect that signals as inputs to my design, and, voila! I am a lucky person!

https://drive.google.com/file/d/1YX_sl1 ... sp=sharing

Now, I still have a job to make design fine /I think Red is not goos for the text, better Amber, and grid must be more lite/.
Making PCB and some mechanical jobs to make replacement of display easy.
If it is interested to that community, I will post /as finished/ Schematics, PCB, and mods of Video CNTR Board.
Best regards!
Pavel, LZ1IM

jry
Posts: 393
Joined: Fri Feb 06, 2004 3:14 pm

Re: Aeroflex (IFR) Questions

Postby jry » Sun Jun 02, 2019 9:24 am

looks interesting ...the display resolution conversion has been the core issue with a substitute display.

I would start a separate thread on the project.

try2fix
New User
Posts: 5
Joined: Mon Jun 17, 2019 10:43 am

Com 120 Power Supply 20 Turn Pot

Postby try2fix » Tue Aug 06, 2019 1:59 pm

This Is What I Found:
The "A" is the Com120 AC Turn -Off Voltage -Total CCW=107 Volts AC Turn Off
CCW Brings The AC Turn-Off Voltage Down.
"B" is the Battery Voltage The Com120 Turns Off- CW Brings The Turn Off Voltage Lower.
Hope This Helps.



Next I have a question regards the back panel, there are two adjustment pots, one viable 'A' and one 'B' not unless you take the rear panel off, both on the PSU section, but no mention of what they are for setting. So before I go playing can anyone suggest what they could adjust?


many thanks

Adrian[/quote]

ljohn6
New User
Posts: 37
Joined: Sat Jan 08, 2011 12:47 pm
What radios do you own?: Kenwood,Icom,Hytera

Re: Aeroflex (IFR) Questions

Postby ljohn6 » Tue Aug 06, 2019 4:29 pm

what a great project look forward to seeing a finished project.

Lorenz G.H.
New User
Posts: 2
Joined: Thu Oct 03, 2019 3:55 am

Re: Aeroflex (IFR) Questions

Postby Lorenz G.H. » Fri Oct 04, 2019 2:00 am

Hi
Please advise.
IFR 4000 compared with GT-1 GADSS?
We lack of money and still need tester. Think to try GT. Who can say anything about it?


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