Dear Sir,
We need to generate 2GFSK and OQPSK Modulated signal with below configuration on the E4433B signal generator by applying external trigger signals from the trigger unit.
2GFSK Modulation:
- BT=0.5 of the Gaussian filter (BT: Filter Co-efficient)
- Frequency deviation of 35 kHz
- Data rate up to 100kbits/s NRZ
- Packet length:64byte
OQPSK Modulation:
- Data rate:250Kbps
- Packet length:20byte(7 bytes payload)
The external trigger in the clock for the synchronization purpose:
- Time interval:2ms
- Every rising edge of the clock the SG need to generate a require modulated signal
In our E4433B Signal generator, we have purchased the following options.
- UN8
- UND
- UN9
- UN7
Please find the below attachments for your easy reference.
- Image 1: Measurement test setup diagram
- Image 2: Enabled Option on my #E4433B signal generator
I have the following queries regarding above:
1. How to enable the external "Trigger In" option in E4433B for this test?
2. How can we configure the above Modulation settings in E4433B? Kindly provide me steps if possible.
3. Which options are needed to enable us to execute the above test for E4433B, if these options are not available?
I request you to guide me regarding this.
My email id for reference:
System Level Solution PVT Ltd
Hi Sagar,
I checked with the experts. This was their reply.
The ‘Custom’ mode found in the ‘Real Time I/Q Baseband’ (option UN8) menu would allow the user to select and configure 2GFSK as well as OQPSK modulation types per the requirements below. In addition the custom could provide user data files to meet their packet length requirements. Now for the big problem – The Real Time I/Q baseband mode does not support external trigger. I guess this could be done in the ARB mode (option UND) but the customer would need to create the waveforms.
Hope this helps.
Pete