Service manuals, schematics, eproms for electrical technicians
FLUKE 6070A 6071A RF-SIGNAL SM
Type: 
(RAR)
(RAR)Size
11.5 MB
11.5 MB
Page
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Category
METER
SERVICE MANUAL
METER
SERVICE MANUAL
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Looking for similar fluke manual?
Good luck to the repair!
Please do not offer the downloaded file for sell only use it for personal usage!
Looking for similar fluke manual?
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FLUKE RFSIGNAL 6070A 6071A 6070 6071 RF SIGNAL RF-SIGNAL
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Relevant METER forum topics:
Hello, can you help us with the ic number, the Fluke 174 type meter
ic
ltpz
ad737
a01b
https://drive.google.com/file/d/1rsSm5hB9u2rA_xxwNXQoOH9_hn7sX72Y/view?usp=drivesdk
ic
ltpz
ad737
a01b
https://drive.google.com/file/d/1rsSm5hB9u2rA_xxwNXQoOH9_hn7sX72Y/view?usp=drivesdk
In my case the display of the ScopeMeter was frozen and the keyboard did not respond any more exept the on/off key. This happened always after the ScopeMeter has been switched on for a while. To find the temperature effect, I heated up the different parts of the Digital A1 board with a hair dryer. At some point, the device display stopped working completely and only the backlight was working. This effect was steady and irreversible.
To repair the device, you need the "fluke_92b_96b_99b_105b_servicemanual" provided here in the service manual area.
On page 272 in Figure 9.2b (Digital A1 circuit diagram, part b) the display contrast circuit schematic shows the NPN Transistor V1432 of type BC848C (see also the attached picture). Measuring the Base/Emitter diode showed a low resistance of 100 Ohms in both directions. Replacing that transistor by a NPN transistor of type BC847C solved the problem and the device was working correctly again.
The reason for choosing the BC847C instead of the BC848C are the Vcbo and Vceo of only 30 V of the BC848x series. The BC847x series has a Vcbo of 50 V and a Vceo of 45 V respectively and offers therefore a greater margin. The V1432 is placed between TP431 (LCDPWR, +5 V) and the -30 V connection from Analog Board A2. These conditions are too close to the absolute maximum ratings of the BC848x and are especially for higher temperatures critical.
To repair the device, you need the "fluke_92b_96b_99b_105b_servicemanual" provided here in the service manual area.
On page 272 in Figure 9.2b (Digital A1 circuit diagram, part b) the display contrast circuit schematic shows the NPN Transistor V1432 of type BC848C (see also the attached picture). Measuring the Base/Emitter diode showed a low resistance of 100 Ohms in both directions. Replacing that transistor by a NPN transistor of type BC847C solved the problem and the device was working correctly again.
The reason for choosing the BC847C instead of the BC848C are the Vcbo and Vceo of only 30 V of the BC848x series. The BC847x series has a Vcbo of 50 V and a Vceo of 45 V respectively and offers therefore a greater margin. The V1432 is placed between TP431 (LCDPWR, +5 V) and the -30 V connection from Analog Board A2. These conditions are too close to the absolute maximum ratings of the BC848x and are especially for higher temperatures critical.
sziasztok.van egy ilyen kis műszerem ,amiben ez az smd alkatrész szált el P43 ,vajon mi lehet ez?
Sziasztok!
Szereztem a Fluke Ti-20 hőkamerát, működik is, csak pontatlan.
Bekapcsoláskor kb. 20 fokról indul, és szép lassan megy fel a hőmérséklet akár 30 fokig is.
Méréskor viszont a magas hőmérsékleteket alacsonyabbnak érzi.
Az érzékenysége tökéletes, akár tized fok különbségeket is érzékel, ha pl. egy radiátor különböző pontjaira irányítom.
Még nem szedtem szét, ahhoz hozzá kell készülnöm, mert elég finom kis műszer.
Egy dologra gondolok, a képalkotó hőmérsékletet stabilizáló peltier esetleg nem megfelelően működne?
Kérdésem hogy van-e bárkinek tapasztalata, akár a konkrét típus vagy csak úgy általában, hogy mit lehet elkövetni, mert egy kalibráció kb. 60k.
Laci
Szereztem a Fluke Ti-20 hőkamerát, működik is, csak pontatlan.
Bekapcsoláskor kb. 20 fokról indul, és szép lassan megy fel a hőmérséklet akár 30 fokig is.
Méréskor viszont a magas hőmérsékleteket alacsonyabbnak érzi.
Az érzékenysége tökéletes, akár tized fok különbségeket is érzékel, ha pl. egy radiátor különböző pontjaira irányítom.
Még nem szedtem szét, ahhoz hozzá kell készülnöm, mert elég finom kis műszer.
Egy dologra gondolok, a képalkotó hőmérsékletet stabilizáló peltier esetleg nem megfelelően működne?
Kérdésem hogy van-e bárkinek tapasztalata, akár a konkrét típus vagy csak úgy általában, hogy mit lehet elkövetni, mert egy kalibráció kb. 60k.
Laci
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