The FO-HBAVT (transmitter) and FO-HBAVR (receiver) form a low-level analog or NTSC/PAL video signal pair. A ±1 V full-scale voltage signal is monitored or sourced to the device under test (DUT) by connecting either the FO-HBAVT or FO-HBAVR. A Fiber-Optic cable connects to the corresponding module to monitor or source the desired signal remotely. Each module may be powered by 3-AA batteries or an external power adapter. Both modules have shielding and custom input/output filtering that provides high immunity from electromagnetic interference (EMI), electromagnetic pulse (EMP), or high voltages associated with plasma research. This allows for rigorous electromagnetic compatibility (EMC) testing/engineering. The satellite modules are validated for EMC up to 200 V/m (46 dBV/m) at 500 kHz to 18 GHz and 600 V/m (pulsed 5 % duty-cycle, 5 μs rise-time) 1 GHz to 2.5 GHz.