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Download Agilent Technologies 4294A Specifications
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Figure 5-33. Measurement result Balanced cable measurement A balun transformer is required for measuring balanced cable because the instrument’s UNKNOWN terminal is unbalanced. Refer to the next paragraph titled “Balanced device measurement” for details of measurement method. Figure 5-34 shows measurement setup for balanced cable. Agilent 16314A balanced/unbalanced 4-terminal converter can be used to measure balanced cables from 100 Hz to 10 MHz using an auto balancing bridge instrument. For measurement using a network analyzer, the 16315A, 16316A and 16317A are available. These converters have different characteristic impedance to allow impedance matching with DUT (cable) impedance of 50 Ω, 100 Ω and 600 Ω, respectively, as shown in Table 5-4. Table 5-4. 16314A, 16315A, 16316A and 16317A characteristic impedance Converter 16314A 16315A 16316A 16317A Characteristic impedance Unbalanced Balanced side side 50 Ω 50 Ω 50 Ω 50 Ω 50 Ω 100 Ω 50 Ω 600 Ω Applicable instrument Auto balancing bridge instrument Network analyzer Figure 5-34. Balanced cable measurement setup 5-24
