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AFE58JD48EVM: AFE58JD48EVM

Feng Tao
Prodigy 10 points
Part Number: AFE58JD48EVM
Other Parts Discussed in Thread: TSW14J50EVM, , AFE58JD48

Tool/software:

Hello

 

I have a TSW14J50EVM connected to an AFE58JD48EVM.

 

I can sample waveforms from HDSC Pro (version 5.20) properly but the trigger options do not work.

 

The trigger options are configured as follows:

 

 

I feed a 3.3V 100ns wide trigger pulse to TRIG_IN SMA connector but the capture does no start. HDSC shows “TRIGGERED ARMED” continuously but does not respond to my trigger.

 

 

 

After I select “trigger mode enable” and “arm on next capture button press”, and click generate “generate trigger”, HSDC waits a while and shows “no trigger occurred”.

 

I tried the following configurations, but they all failed :

User profile AFE58JD48_Custom_PLL_MODE_40x_No Demod_SubClass1 、

Firmware AFE58JD48.ini

 

Please tell me what needs to be done to make the external trigger work

 

 

  • 0
    TI__Prodigy 640 points

    Feng,

    Unfortunately, external trigger with auto-rearm is not supported on the TSW14J50, due to the firmware not having the feature implemented.

    On a separate note, digital input signals, such as Trig-In, should be 1.8Vpp.

    See the following threads for more information:

    https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1042016/tsw14j56evm-hsdc-pro-auto-re-arm-trigger-functionality

    https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1400218/tsw14j50evm-hsdc-pro-software---auto-re-arm-trigger-option-unavailable

    Apologies for any inconvenience this may cause.

  • 0 in reply to Shane Aspenwall
    Prodigy 10 points

    Shane Aspenwall,

    We are not using an external trigger with automatic reset function. We need to receive external triggers from other devices or signal generators on the TSW14J50EVM and be able to work properly. According to the above steps, the final displayed result is' no trigger occurred '. I will send you the firmware I am using, can you tell me where the problem lies.

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    [ADC]
    Interface name="TSW14J50RX_FIRMWARE"
    Number of channels=16
    Channel Pattern=1,2,5,6,9,10,13,14,3,4,7,8,11,12,15,16
    Data Postprocessing=0:2,1:8192
    \\operation:operand
    \\operaion
    \\0=bit shift
    \\1=xor
    \\2=and
    \\3=or
    \\4=not
    \\operand
    \\value(+ve if bitshift by right and -ve if bitshift by left)
    \\E.g 0:-2,1:1024
    \\bitshift by left 2 times and then xor by 1024
    Number of Bits=16
    Max sample Rate=125000000
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
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    [ADC]
    Interface name="TSW14J50RX_FIRMWARE"
    Number of channels=16
    Channel Pattern=1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16
    Data Postprocessing=1:32768
    \\operation:operand
    \\operaion
    \\0=bit shift
    \\1=xor
    \\2=and
    \\3=or
    \\4=not
    \\operand
    \\value(+ve if bitshift by right and -ve if bitshift by left)
    \\E.g 0:-2,1:1024
    \\bitshift by left 2 times and then xor by 1024
    Number of Bits=16
    Max sample Rate=125000000
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

    Kind regard,

    Feng Tao.

  • 0 in reply to Feng Tao
    TI__Prodigy 640 points

    Feng Tao,

    As I understand, you only need a single trigger between captures. I replicated your configuration (TSW14J50EVM + AFE58JD48EVM). Try the following:

    1. Enable Trigger Mode

    2. Connect Waveform Generator Source to J13 "EXT TRIG"

    3. Setup Waveform Source -- 10us Pulse Width, 1.8Vpp, 1Hz. Output impedance should be set to 1M or Hi-Z. Output off. Reading DDR with the source off should cause the "no trigger occurred" error. It may require pressing twice, in case the DDR memory has already captured data.

    4. Click "Read DDR Memory." Then, activate the trigger.

    To verify the trigger started capture, I split the trigger output to the input of CH10 and captured the transient. The device has a LPF, so the pulse is not a square wave.

    Hope this solves your issue!