HP 438A in Cary, NC, USA

Dual Channel Power Meter The 438A Power Meter is a dual-channel rf power meter designed specifically for ATE systems. The 438A has a compact front panel that saves critical rack space, while the dual channel design allows simple and accurate measurements of the ratio and difference of power levels from two separate sensors. The 438A is compatible with the 8480 series of thermocouple and diode power sensors. HP-IB capability is standard.