HP 4284A - Page 18

6. Measurement Pro cedure and Examples
Intro duction . . . . . . . . . . . . . . . . . . 6-1
Basic Measurement Pro cedure . . . . . . . . . . 6-1
Impedance Parameters . . . . . . . . . . . . . 6-2
Parallel/Series Circuit Mo de . . . . . . . . . . . 6-5
Selecting Circuit Mo de of Capacitance . . . . . 6-5
Small Capacitance (mo deled by (a) in Figure 6-3) 6-5
Large Capacitance (mo deled by (b) in Figure 6-3) 6-5
Selecting Circuit Mo de of Inductance . . . . . . 6-6
Large Inductance (mo deled by (a) in Figure 6-4) 6-6
Small Inductance (mo deled by (b) in Figure 6-4) 6-6
Signal Level . . . . . . . . . . . . . . . . . . 6-7
Signal Level Across The DUT . . . . . . . . . 6-7
Oscillator Level Setting . . . . . . . . . . . . 6-8
Signal Level Setting Selection Example for
Inductance Measurements . . . . . . . . 6-8
Four-Terminal Pair Conguration . . . . . . . . 6-9
Measurement Contacts . . . . . . . . . . . . . 6-10
Capacitance To Ground . . . . . . . . . . . . 6-11
Contact Resistance . . . . . . . . . . . . . . 6-12
Extending Test Leads . . . . . . . . . . . . . 6-13
Guarding For Low Capacitance Measurements . . 6-15
Shielding . . . . . . . . . . . . . . . . . . 6-15
Correction Functions . . . . . . . . . . . . . . 6-16
Performing OPEN Correction . . . . . . . . . 6-19
Performing SHORT Correction . . . . . . . . . 6-19
Performing LOAD Correction . . . . . . . . . 6-20
Preparing the Standard . . . . . . . . . . . 6-20
Reference Values of the LOAD Standard . . . 6-20
Using the Pre-Measured Device for the LOAD . 6-21
Parasitics Incident to DUT Connection . . . . . . 6-22
Characteristics Example . . . . . . . . . . . . . 6-23
Capacitor Measurements . . . . . . . . . . . . 6-24
Inductance Measurements . . . . . . . . . . . . 6-27
If the HP 4284A do es NOT Measure Correctly . . . 6-32
7. Remote Control
Intro duction . . . . . . . . . . . . . . . . . . 7-1
Hewlett-Packard Interface Bus (HP-IB) . . . . . . 7-1
HP-IB Connection . . . . . . . . . . . . . . 7-1
HP-IB Capability. . . . . . . . . . . . . . . 7-3
HP-IB Addressing . . . . . . . . . . . . . . 7-4
HP-IB Bus Capability. . . . . . . . . . . . . 7-4
ABORT I/O (IFC) . . . . . . . . . . . . . 7-4
CLEAR LOCKOUT/SET LOCAL . . . . . . 7-4
DEVICE CLEAR (SDC or DCL) . . . . . . . 7-4
LOCAL (GTL) . . . . . . . . . . . . . . . 7-4
LOCAL LOCKOUT (LLO) . . . . . . . . . 7-5
REMOTE . . . . . . . . . . . . . . . . . 7-5
SPOLL . . . . . . . . . . . . . . . . . . 7-5
SERVICE REQUEST . . . . . . . . . . . . 7-5
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