Specifications

Figure 5-38. Measurement result
5.9.1 Balanced cable measurement
A balun transformer is required for measuring balanced cable because the instrument’s UNKNOWN
terminal is unbalanced (refer to Section 5.10.) Figure 5-39 shows the measurement setup for a
balanced cable. A balanced/unbalanced 4T converter (Agilent part number 16314-60011) 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, 16315-60011, 16316A, and 16317A are available. These
converters have different characteristic impedance to allow impedance matching with DUT (cable)
impedance of 50, 100 and 600 Ω, respectively, as shown in Table 5-4.
Table 5-4. 16314-60011, 16315-60011, 16316A, and 16317A
Figure 5-39. Balanced cable measurement setup
Converter Characteristic impedance Applicable instrument
Unbalanced Balanced
side side
16314-60011 50 Ω 50 Ω Auto-balancing bridge instrument
16315-60011 50 Ω 50 Ω Network analyzer
16316A 50 Ω 100 Ω
16317A 50 Ω 600 Ω
5-28