Required Equipment and Tools Table 1 Required Equipment and Tools Description Part Number Digital multimeter (DMM) 34401A, 3455A, 3456A, or 3458A Frequency counter 5335A or 53131A NOTE: Use only the specific models of DMM and counter listed above; other models will not work with the calibration software. The instruments must be calibrated and traceable to a national standards laboratory (e.g., NIST in the U.S.). Digital hygrometer or other instrument to measure temperature and humidity 4-meter GPIB cable 10833C 1-meter GPIB cable 10833A Two power cords Power strip extension Two 1-meter dual banana (M)-to-dual banana (M) coaxial cables 1-meter BNC(M)-to-BNC(M) coaxial cable ASRU Card calibration jumpers (one per module) 03066-61628 Pin verification fixture For 2- or 4-module testhead (Provides full coverage for ASRU-N card; backward compatible with E4033A) E4033C For 1-module testhead (Provides full coverage fo...