WR2RF signal validity
Introduction
This page provides a reference for the characteristics of signals output from the V1 board. The board was v1 serial 0002.
PPS
PPS 1.5 V pulse into 50 Ohm for 10 ms.
Front Panel WR Clk
Currently the LTC6950 is configured to output 125 MHz. 1.0 V peak to peak into 50 Ohm.
WR Clk Phase noise
WR Clk Spectrum
Front panel 10 MHz
Front panel 10 MHz output, 500 mV Peak -> Peak into 50 Ohm.
Front panel 10 MHz Phase noise
Front panel 10 MHz spectrum
DDS output
DDS Peak -> Peak is 700 mV into 50 Ohm.
DDS phase noise
DDS Spectrum
RF channel 1
RF channel 1, Peak -> Peak is 600 mV into 50 Ohm
RF channel 1, Phase noise
RF channel 1, Spectrum
The spur that appears at 201.4 MHz is due to aliasing, bacause when the centre frequency of the 5052 is adjusted, the frequency of the spur moves. Therefore I believe that using the 5052 for spectrum analysis may be slightly misleading. Would also be good to measure the spectrum with the external bandpass filter attached.
RF channel 1, trigger unit 1
The trigger unit was configured to output the RF signal divided by 5. The pulse height is 860 mV into 50 Ohm.
RF channel 1, trigger unit 1, Phase noise
RF channel 1, trigger unit 1, Spectrum
RF channel 1, trigger unit 2
The trigger unit was configured to output the RF signal divided by 5. 850 mV pulse into 50 Ohm
RF channel 1, trigger unit 2, Phase noise
RF channel 1, trigger unit 2, Spectrum
RF channel 2
RF channel 2, Peak -> Peak is 600 mV into 50 Ohm.
RF channel 1, Phase noise
RF channel 1, Spectrum
RF channel 2, trigger unit 1
The trigger unit was configured to output the RF signal divided by 5. The pulse height is 850 mV into 50 Ohm.
RF channel 2, trigger unit 1, Phase noise
RF channel 2, trigger unit 1, Spectrum
RF channel 2, trigger unit 2
The trigger unit was configured to output the RF signal divided by 5. 850 mV pulse into 50 Ohm