ADLINK LPCIe-8124-C Encoder Card Trigger Configuration Guide

Confirm that the output polarity setting is correct (active high or active low).

8.3 Comparison of Trigger Position Deviation

Check if the initial value of the counter is correct (whether it was reset or pre-set before startup).

Confirm that the encoder resolution is consistent with the comparison point unit (for example, if the comparison value is in pulses, and the encoder has 1000 lines per revolution, then each revolution corresponds to 4000 counting pulses (4 x), and the comparison point needs to be calculated based on this).

Check if the FIFO is fully loaded in table mode, and if the number of comparison points exceeds 1023, load them in batches.

8.4 The board cannot be recognized

Check if the PCIe slot is working properly and try replacing the slot.

Check if the card index switch on the card is set correctly, and avoid conflicts if there are multiple cards.

Install the latest driver and check for unrecognized devices in Device Manager, manually update the driver path.

8.5 LTC latch value abnormal

Confirm whether the LTC signal level meets the input specifications (optically isolated input requires external power drive, non isolated TTL-IN can be directly connected to 5V).

Check if the latch trigger edge (up/down) matches the external signal.

Ensure that the counter counts properly before the latch occurs.

Suggestions for maintenance and long-term stability

Regularly clean the gold fingers and connectors to prevent poor oxidation contact.

Avoid hot swapping (although PCIe supports it, it is recommended to shut down and plug in to prevent surges).

If the working environment of the equipment is dusty, a dust cover can be used to protect the card.

Regularly backup the TriggerMaster configuration file (. cfg) for quick recovery of multi card batch deployment.