Stanford Research DG535 High-Precision Delay and Pulse Generator with Calibration DataProduct Description The Stanford Research DG535 is a high precision delay and pulse generator, featuring options OPT 01, 02, and 03. It comes calibrated with data to ensure accurate pulse timing for advanced applications. Things to Note Appearance: 80 90% new, functionally tested. As a used item, minor scratches may be present. However, all products are fully functional and come with a DOA (Dead on Arrival) warranty. For EU Buyers: The price does not