The WG3038 is a 32-channel rack/benchtop optical power meter engineered for high-density parallel testing where channel-to-channel interference is a critical concern. Its defining advantage is high-isolation anti-crosstalk design, which prevents signal cross-contamination during simultaneous multi-port measurement—making it particularly suited to passive component insertion loss (IL) synchronous testing, where even minor leakage between adjacent channels can compromise results. All 32 channels support independent wavelength settings across 9 common wavelengths from 850nm to 1625nm, with the InGaAs detector delivering 0.1dB accuracy, 0.01dB resolution, and a dual-range configuration of −70 to +10 dBm (Type A) or −50 to +27 dBm (Type B). A 7-inch TFT color LCD displays all 32 channel readings simultaneously, while USB and LAN interfaces enable full SCPI programmable control for ATE integration. The WG3038 is purpose-built for optical device testing, transceiver module debugging, fiber network verification, and high-channel-count production environments where signal integrity across ports cannot be compromised. Its 450×360×132mm chassis and AC 100–250V input suit global deployment.