Section 9: Verifying the Model 9500B Accuracy Specification 9-15
Final Width = 215mm
9.8.5.1 Summary
Equipment requirements are given at para 9.8.5.2 and test
interconnections at para 9.8.5.3.
The Load Resistance Measurement Function is verified by carrying out
measurements of Reference Resistors in the sequence given at paras
9.8.5.5, at the verification points shown in Table 9.8.5.1.
9.8.5.2 Equipment Requirements
• The UUT Model 9500B with 9510 or 9530 Active Head.
• A traceable, high-resolution Standards DMM, used to measure
resistance at 1MΩ and 50Ω, with an accuracy of 0.02% or better.
For example, a Model 1281 Digital Multimeter.
• An adaptor to convert from BNC to 4mm leads, incorporating
switchable 50Ω, and 1MΩ reference loads.
For example, a Model 4955 Calibration Adaptor.
• Short, high-quality 4mm leads.
9.8.5.3 Interconnections
Refer to Fig 9.8.5.1 (overleaf).
9.8.5 Verifying the Load Resistance Measurement Function
1. Connections Ensure that the 9500B is connected to the Standards
DMM as shown in Fig. 9.8.5.1, or via a similar
BNC-4mm adaptor and 50Ω load, and that both
instruments are powered on and warmed up.
2. 9500B a. Ensure that the 9500B is in MANUAL mode
and then select the Load Resistance
Measurement function (From entry default,
press the Aux key on the right of the Front
Panel, then the
soft key at the bottom left of
the screen).
b. In the
Menu, select the required output
Signal Channel via the Channel Selection
screen.
9.8.5.4 Verification Setup
Verfication Procedure and table overleaf
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