I could not find any level 3 mixers, but by adjusting the beat frequency the power in each of the delay line channels rose to almost 6.5 dBm.
Transfer function measurement: (Refer Attachment 1)
Everything about the setup remained as I had left it earlier: described in elog 15174
I did not use a slow servo, but took individual sweeps adjusting the PSL temperature each time to bring the error voltage between +/-25 mV. The beat frequency was over 100 MHz.
For the plot posted in Attachment 1, the measurement paramters are the following. Will do further measurements/analysis tomorrow.
# AG4395A Measurement - Timestamp: Jan 30 2020 - 21:58:00
# Parameter File: TFAG4395Atemplate.yml
#---------- Measurement Parameters ------------
# Start Frequency (Hz): 50000.0, 50000.0
# Stop Frequency (Hz): 1000000.0, 1000000.0
# Frequency Points: 801, 801
# Measurement Format: LOGM, PHAS
# Measuremed Input: AR, AR
#---------- Analyzer Settings ----------
# Number of Averages: 1
# Auto Bandwidth: Off, Off
# IF Bandwidth: 1000.0, 1000.0
# Input Attenuators (R,A,B): 0dB 0dB 0dB
# Excitation amplitude = -20.0dBm
yes, its fine to use this with a level 3 or level 7 mixer; let's see some PM transfer functions !
Is this sufficient enough for the mixer to work?