[Elecraft] NZ7C: Setting up a "lab" (off-topic)

[Don Brown]

Good luck!! The function generator you specified won't even do all of thi=
s. I would guess you would need over $10000 worth of new equipment to do =
all of the listed requirements. =20

Remember when it comes to test equipment you have Good, Fast and Cheap - =
pick any two!

You have a great scope I have a 475 on my bench. I have a Tektronix CFG-2=
53 function generator that will do some, but nowhere near all of the requ=
irements you listed. It was about $700 if I remember right and may be ava=
ilable used or surplus.

I would look for some of the new, used or surplus function generators and=
 adapt the lesson to the capability of the generator. For instance if you=
 need to look at a modulation envelope it doesn't really mater what the f=
requencies are for instruction purposes. You may just have to skip some o=
f the lab tests for example =20

Problem 34 very few generators could generate a signal this low without l=
eakage. =20

Problem 14 - function generators with 1 hertz resolution are not cheap - =
even used or surplus

Don Brown
KD5NDB

----- Original Message -----
From: Tim and Nancy Logan
Sent: Sunday, April 07, 2002 10:43 AM
To: Elecraft
Subject: [Elecraft] NZ7C: Setting up a "lab" (off-topic)

Hi everyone - hope this off-topic question is OK....

In an ealier post I mentioned that I got a Norcal 40A kit and David
Rutledge's The Electronics of Radio which uses the Norcal for the
"pracitical lab". To use this self-teaching tool well, you need some
equipment. Thanks to the Elecraft crowd I've solved the Oscilliscope
component by getting a Tektronics 465M for $110. It will have the manual
and arrives tomorrow :-)

The study also requires a frequency generator and mentions the HP 33120A
15MHz function generator. Well, this little baby is $1700 new. Dah, I
don't THINK so folks - I'm more interested in something like $50 used.
I've summarized the typical uses the "lab work"  demands of the function
generator by the book's Problem Numbers.

Knowing that this is what is required, can anyone suggest a piece of
equipment that would meet my needs and could be had very cheaply? Thanks
again.

Problem 3A: set for 20Hz, 1Vpp square wave
Problem 4: 1MHz, 5Vpp sine wave with modulation depth of 70% - need a
synch output connected to the oscilloscope.

Problem 5: 1kHz, 5Vpp square wave    vary 100kHz to 30kHz and 100mVpp
Problem 10: set for %V pulses with 5ns width that repeat at a feq of
20kHz
Problem 13: 7MHz to 28MHz,10Vpp
Problem 14: Set to 4,913,500 Hz sine wave with .5Vpp amplitude. Must be
able to change feq in 1Hz steps

Problem 15: 7MHz sine wave, 5Vpp
Problem 17: 600Hz sine wave, 25mVrms
Problem 19: 1kHz square wave (50 ohm function generator set to 4Vpp with
DC offset of 2V)
Problem 20: 20Hz square wave; 5Vpp
Problem 21: 7MHz sine wave, 2V with .5V offset
Problem 34 input power of 100fW at freq between 7020 - 7030kHz and
ability to create noise (-30dBm in this case


Thanks folks - 73/Tim Logan NZ7C


--- StripMime Report -- processed MIME parts ---
multipart/alternative
  text/plain (text body -- kept)
  text/html
---