Doble TDR900 User Guide
72A-2612-01 Rev. A 09/06
3
Chapter 2
Parts List – Hardware and Software
2.1 Instrument Overview
The TDR900 Instrument comes complete with packaged hardware, software, and cables
as shown in Figure 1. This section provides an introduction to the various parts and
accessories that comprise the Doble TDR900 Instrument.
Figure 1. TDR900 Test Set and Basic Cables
The TDR900 instrument measures and records breaker, switch and relay timing
parameters. It accomplishes this using the hardware components packaged in a rugged
field instrument, as shown in Figure 2.
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