Issues and Errata

Errata are functional defects or errors, which may cause the product to deviate from published specifications. Documentation issues include errors, unclear descriptions, or omissions from current published specifications or product documents.

TRION and TRION3

ID001 - TRION(3)-18xx-MULTI Highpass Filters (0.16Hz - 100Hz) show 64% overshoot and higher cutoff frequencies than expected

Problem

Using the highpass filter of HS-MULTI (highspeed) boards show unexpected behaviour. The cutoff frequencies of the highpass filters are higher than the set frequency and the filters show 64% overshoot. These filters are calculated in the FPGA. The FPGA calcuation of these filter stages is not working properly.

Implication

For the 18xx-MULTI board the IEPE mode cannot be used properly for low frequencies. The input coupling is not working correctly in this frequency range. Highpass filters in ranges (0.16Hz - 100Hz) cannot be used properly. Modes with DC coupling can be used without issues

Workaround

Workaround in version 6.6. New AC-Coupling 0.15Hz

Status

Fixed in TRION Version 6.7.3

ID002 - TRION(3)-18xx-MULTI Highpass Filters (0.16Hz - 100Hz) is distorting the input signal

Problem

Using the highpass filter of HS-MULTI (highspeed) boards show unexpected behaviour. Since implementation of 10th order low pass filters in version 6.2 the TRION API sets wrong registers wrapping around to the address range of the highpass filter. Only the averager takes affect and the filter is not applied properly.

Implication

For the 18xx-MULTI board the IEPE mode cannot be used properly for low frequencies. The input coupling is not working correctly in this frequency range. Highpass filters in ranges (0.16Hz - 100Hz) cannot be used properly. The filtered signal is distorted. Modes with DC coupling can be used without issues. Boards without 10th order Filter are not affected.

Workaround

Workaround in version 6.6. New AC-Coupling 0.15Hz

Status

Fixed in TRION Version 6.7.3

ID003 - TRION3-1810M-POWER phase mismatch at low samplerate < 10 kHz

Problem

Using samplerates lower 10kHz and changing the Lowpass Filter Settings with TRION3-1810M-POWER boards show unexpected phase jumps of +-800ns between channels.

Implication

TRION3-1810M-POWER cannot be used properly for samplerates < 10 kHz

Workaround

Use samplerates > 10 kHz

Status

Planned Fix (TRION Version 7.2)