|
P6042 Story.
I had always wanted one of these but they were really expensive. I also had read about them in this forum and EEVBlog where there were a few horror stories about the delicacy of the hall sensor probe
I had always wanted one of these but they were really expensive. I also had read about them in this forum and EEVBlog where there were a few horror stories about the delicacy of the hall sensor probe
|
By
William Himbert
·
#128511
·
|
|
Re: Tek 2215
Here is the list of Electrolytic caps in a Tek 2215.. I am working on finding replacement caps from a single supplier like Mouser or Digikey..The list is caps only and will be adding the rest of the
Here is the list of Electrolytic caps in a Tek 2215.. I am working on finding replacement caps from a single supplier like Mouser or Digikey..The list is caps only and will be adding the rest of the
|
By
Jay
·
#128510
·
|
|
SMPS Danger.
I saw some comments on this and wanted to add a personal story - even adults sometimes only learn through experience. One day my PCs SMPS failed. I got another since I didn't want to be off the air
I saw some comments on this and wanted to add a personal story - even adults sometimes only learn through experience. One day my PCs SMPS failed. I got another since I didn't want to be off the air
|
By
William Himbert
·
#128509
·
|
|
Re: Tek 2465: readout unstable after PSU recap
Set your oscilloscope to line triggering. If using a 7A22 or DSO, use
the high frequency cutoff or averaging to remove the high frequency
ripple.
Set your oscilloscope to line triggering. If using a 7A22 or DSO, use
the high frequency cutoff or averaging to remove the high frequency
ripple.
|
By
David Hess
·
#128508
·
|
|
Re: Tek 2465: readout unstable after PSU recap
Page 5-3 of the Service Manual. This is the Section on "Adjustment Procedure" and is the first step of that procedure.
To: TekScopes@...
Sent: Monday, May 30, 2016 4:01 PM
Subject:
Page 5-3 of the Service Manual. This is the Section on "Adjustment Procedure" and is the first step of that procedure.
To: TekScopes@...
Sent: Monday, May 30, 2016 4:01 PM
Subject:
|
By
machineguy59
·
#128507
·
|
|
Re: Tek 2465: readout unstable after PSU recap
Pg 5-3 in the service manual:
voltage tolerance switch_ripple (though line caused ripple must be much lower)
+10V 0.1% 100mV
+87V 2% 80mV
+42.4V 2% 80mV
+15V 1.5% 15mV
D+5V 3% 150mV
A+5V 1.5%
Pg 5-3 in the service manual:
voltage tolerance switch_ripple (though line caused ripple must be much lower)
+10V 0.1% 100mV
+87V 2% 80mV
+42.4V 2% 80mV
+15V 1.5% 15mV
D+5V 3% 150mV
A+5V 1.5%
|
By
bc
·
#128506
·
|
|
Re: Tek 2465: readout unstable after PSU recap
Can anyone point me to the ripple specs on the 2465?
Charlie Conger
Can anyone point me to the ripple specs on the 2465?
Charlie Conger
|
By
Charlie Conger
·
#128505
·
|
|
11403 factory default.
Is there an option to set 11403 to factory default? I have been playing with colors a bit, but now I don't like where I ended up and I want to return to factory settings. I have the user manual, but
Is there an option to set 11403 to factory default? I have been playing with colors a bit, but now I don't like where I ended up and I want to return to factory settings. I have the user manual, but
|
By
shteii01
·
#128504
·
|
|
Looking for schematics for Acme PS2L-1000
Sorry for the OT post - but I figured you all would be my best shot :)
I'm looking for a complete set of schematics for the Acme PS2L-1000 1KW
active load. I have seen the ones
Sorry for the OT post - but I figured you all would be my best shot :)
I'm looking for a complete set of schematics for the Acme PS2L-1000 1KW
active load. I have seen the ones
|
By
uoficowboy
·
#128503
·
|
|
Re: PG502 freq too low
I've just been working on one of those, on and off for about a month. Check the value of the series R: R149 18 Ohms; I found the similar one for the other ranges, R162 had gone up in value from a
I've just been working on one of those, on and off for about a month. Check the value of the series R: R149 18 Ohms; I found the similar one for the other ranges, R162 had gone up in value from a
|
By
Dan Rae
·
#128502
·
|
|
PG502 freq too low
Hi,
I just got a PG502 pulse generator. After I fixed a bad solder joint on one of the pots, everything seems to be good, , except for the 250MHz setting. It only goes up to 200MHz. All other
Hi,
I just got a PG502 pulse generator. After I fixed a bad solder joint on one of the pots, everything seems to be good, , except for the 250MHz setting. It only goes up to 200MHz. All other
|
By
Szabolcs Szigeti
·
#128501
·
|
|
Re: Tek 2465: readout unstable after PSU recap
Hi,
The way i found the easiest to replace the caps was to suck as much solder from the hole as possible, then use a flat side cutter plier to cut the leads of the caps right at the level of the
Hi,
The way i found the easiest to replace the caps was to suck as much solder from the hole as possible, then use a flat side cutter plier to cut the leads of the caps right at the level of the
|
By
Szabolcs Szigeti
·
#128500
·
|
|
Re: Tek 2465: readout unstable after PSU recap
All,
To ask a point of clarification, by jitter do we mean substantial “I can see this moving back and forth” or do we mean text fuzziness, or are they one in the same if the jitter is high or
All,
To ask a point of clarification, by jitter do we mean substantial “I can see this moving back and forth” or do we mean text fuzziness, or are they one in the same if the jitter is high or
|
By
R. Stasel
·
#128499
·
|
|
Re: 2440 seems to crash when switched less than 200ns/div?
General DC voltmeters are very slow compared to even general purpose
operational amplifiers used as comparators. Some have a minimum and
maximum peak hold mode but usually even that will be too
General DC voltmeters are very slow compared to even general purpose
operational amplifiers used as comparators. Some have a minimum and
maximum peak hold mode but usually even that will be too
|
By
David Hess
·
#128498
·
|
|
Re: 2440 seems to crash when switched less than 200ns/div?
The funny thing is that even though the voltmeter is slow, it should be giving some sort of average. And the voltages printed on the service manual are also sort of an average. I was testing the
The funny thing is that even though the voltmeter is slow, it should be giving some sort of average. And the voltages printed on the service manual are also sort of an average. I was testing the
|
By
bc
·
#128497
·
|
|
Re: 585A Power Supply Time-delay Relay Does Not Switch
Does your relay click after 30-45 seconds of warm up?
The relay in my 531 would click, but had dirty contacts that prevented the relay from latching on. I fixed it for a dollar - gently cleaned the
Does your relay click after 30-45 seconds of warm up?
The relay in my 531 would click, but had dirty contacts that prevented the relay from latching on. I fixed it for a dollar - gently cleaned the
|
By
Don Parth
·
#128496
·
|
|
Re: 2440 seems to crash when switched less than 200ns/div?
If by unregulated output you mean +6.71 volts at the collector of
Q879, it has no effect on the +5 volt output unless it falls too low.
Q879 is completely controlled by U870B under normal
If by unregulated output you mean +6.71 volts at the collector of
Q879, it has no effect on the +5 volt output unless it falls too low.
Q879 is completely controlled by U870B under normal
|
By
David Hess
·
#128495
·
|
|
Re: 2440 seems to crash when switched less than 200ns/div?
The schematic marks the -8 volt regulated output as -8.0, -8.6, and
-8.37 at different locations. Calculating it from R265 and R368
indicates that the -8 volt sense line should be exactly -8.00
The schematic marks the -8 volt regulated output as -8.0, -8.6, and
-8.37 at different locations. Calculating it from R265 and R368
indicates that the -8 volt sense line should be exactly -8.00
|
By
David Hess
·
#128494
·
|
|
Re: 2440 seems to crash when switched less than 200ns/div?
That divider that generates the ref voltage for the current limit seems spot on. I calculated the expected voltage based on the resistors that were there and the voltages seen at the unregulated
That divider that generates the ref voltage for the current limit seems spot on. I calculated the expected voltage based on the resistors that were there and the voltages seen at the unregulated
|
By
bc
·
#128493
·
|
|
Re: 2440 seems to crash when switched less than 200ns/div?
TekScopes@...> wrote:
Resistors can drift and develop all kinds of weirdness. I didn't read your
report in detail, but perhaps the dividers that are supposed to derive some
of those
TekScopes@...> wrote:
Resistors can drift and develop all kinds of weirdness. I didn't read your
report in detail, but perhaps the dividers that are supposed to derive some
of those
|
By
Siggi
·
#128492
·
|