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Sorry, my fault. 0,5?F , (C335), that is right. Heerenveen 549 has EROmet capicator, germany capicator. But, Portland 549 has bad black areovox, replaced him and 549 run fine. Best regards Matt

================= How did Tek get the Delta Standard for the 130 L-C Meter to have a 0pF and a MINUS 3pF value? Exactly what is a negative capacitance and what is it good for? See attached photo.

Hi pleas replaced 0,33?F Areovox capicator in Horz. amplifier. This capicator ist bad. I has repaired many 549, one from Nethersland (Heerenveen) has not this Problem, but Portland-549 has this

They do not have 0 and -3pF. The fixture ( I would love to have the original, but made one myself as a substitude) has a starting capacity. I do not remember the values but for instance 3 pF on the

"Only the stray capacitance of the connector and switch assembly is in the circuit in the -3uufd position. The actual capacitance of these strays is approximately 10 to 20uufd. No effort is made to

The service manual is available online if you want to see how it works. "Only the stray capacitance of the connector and switch assembly is in the circuit in the -3pF position. The actual capacitance

Pages 6-6 and 6-7 of the 130 manual describe the cal procedure using the S-30 + and - 3pf setting. RP

Since it appears to be a passive device, it is probably and inductance that's equivalent to -3 pF at the test frequency. The zero value is probably an L-C resonant (near the test frequency) circuit

How did Tek get the Delta Standard for the 130 L-C Meter to have a 0pF and a MINUS 3pF value? Exactly what is a negative capacitance and what is it good for? See attached photo. Dennis

The outputs from the U140 and U150 shift registers control more than the attenuator relays. The outputs can change after the relays are activated by the strobe signal from U130G without affecting the

Hi Guys ! I need a little help to fix my scope. Ch1 is working fine, diagnostics is OK. No signal comes out Ch2 attenuators - testpoint 11 If I set the input attenuators to 1V/Div and compare U140 and

Cliff, ? It sounds like your trigger point is close to the baseline and triggering on noise.? ? ? Here is a round about way to set the trigger point, assuming that your 5V p-p signal will fill

If you've wondered why some TE have no fan: <http://www.eevblog.com/2013/02/20/eevblog-426-hp-3457a-multimeter-teardown/> Start watching around 19:55 time. Dave

I have it set to normal mode, I've tried both AC, DC, and HF reject couplings, and the channel itself is coupled DC. But it still seems to only want to trigger on the little bit of ripple on the wave,

I would have used different connectors just to prevent getting the output and the charge line mixed up. <iglesia_cristiana_arpas_eternas@...> wrote:

Yes David I agree , I just wonder me why BNC was a good choice for output pulse, but not for transmission line extender, since both are on the same power and rise time stress...??? Gabriel.

Cliff, Use DC, not AC coupling for the trigger. Single-sweep mode would be good too; just press the button whenever you want to update the trace. HankC, Boston WA1HOS

Hi, I have a working calibration fixture that I have modified with a modern RP-SMA output connector for the TRIG OUT. I include a female BNC to to RP-SMA male adapter cable about 9 inches long. Asking

Set trigger mode to Normal not Auto. Dave ________________________________ Sent: 02 March 2013 04:13 To: TekScopes@... Subject: [TekScopes] 466 Trigger on <1Hz Square Wave? I have a case

You can absolutely trigger on low frequency signals including slow ramps. Be sure to set TRIG MODE (below the time/div control on the right side) to NORM instead of AUTO to prevent the sweep from free