Hi,
I have one Agilent N5182A with option "1EL" Differential I/Q output. Until now I have never used these outputs because I did not need, but today I noticed that they have some problems, but I'm not sure.
The signal on BNC output Ip and Qp are within specifications, but signal on BNC In and Qn are not.
I connected the 4 outputs Ip / In / Qp / Qn on oscilloscope and the relationship between Ip and In is 10:1 (Ip = 1Vpp / In = 100mVpp). The phase of p/n is ok (180° offset) but the amplitude is not the same.
Is a hardware problem ? It broke something ? Or should it be so ?
I have made Full Internal test and Generator report all ok.
What can I check ?
What do you recommend ?
Trace 1 = I positive signal
Trace 2 = I negative signal
!http://postimg.org/image/v435egi8h/!
Trace 1 = Q positive signal
Trace 2 = Q negative signal
!http://postimg.org/image/uxmbox19d/!
Thanks very much
debugasm
I have one Agilent N5182A with option "1EL" Differential I/Q output. Until now I have never used these outputs because I did not need, but today I noticed that they have some problems, but I'm not sure.
The signal on BNC output Ip and Qp are within specifications, but signal on BNC In and Qn are not.
I connected the 4 outputs Ip / In / Qp / Qn on oscilloscope and the relationship between Ip and In is 10:1 (Ip = 1Vpp / In = 100mVpp). The phase of p/n is ok (180° offset) but the amplitude is not the same.
Is a hardware problem ? It broke something ? Or should it be so ?
I have made Full Internal test and Generator report all ok.
What can I check ?
What do you recommend ?
Trace 1 = I positive signal
Trace 2 = I negative signal
!http://postimg.org/image/v435egi8h/!
Trace 1 = Q positive signal
Trace 2 = Q negative signal
!http://postimg.org/image/uxmbox19d/!
Thanks very much
debugasm
I recently had a customer who had option 1EL and they weren’t getting anything out of the I not and Q not.
A good way to check this it to load up the SINE_TEST_WFM waveform into the Dual Arb and play it.
You should see a sine wave with an amplitude of 800 mVpp on all four ports, I, Q, I not, and Q not.
The customer that wasn’t getting the correct output on the I not and Q not needed to upgrade their firmware to 1.86.
If you have old firmware, I suggest you upgrade and then look at the outputs.
Regards -