Product Manual
Table Of Contents
- 8808A Users Manual
- 1. Introduction and Specifications
- 2. Preparing the Meter for Operation
- 3. Operating the Meter from the Front Panel
- Introduction
- Dual Display
- Rear Panel
- Adjusting Meter Range
- Selecting a Measurement Rate
- Selecting a Measurement Function
- Compare Function (COMP)
- List and Number Editors
- Function Keys S1 – S6
- Power-Up Configuration
- Calibration
- 4. Operating the Meter Using the Computer Interface
- Introduction
- Preparing the Meter for Operations via the RS-232 Interface
- Getting Started with an Installation Test
- How the Meter Processes Input
- How the Meter Processes Output
- Triggering Output
- Status Registers
- Computer Interface Command Set
- Common Commands
- Function Commands and Queries
- Function Modifier Commands and Queries
- Range and Measurement Rate Commands and Queries
- Measurement Queries
- Compare Commands and Queries
- Trigger Configuration Commands
- Miscellaneous Commands and Queries
- RS-232 Remote / Local Configurations
- RS-232 Save / Recall System Configurations
- Sample Program Using the RS-232 Computer Interface
- Appendices
Appendices
Applications A
A-3
If the relative readings value of a dc voltage measurement is shown in the primary
display and the dc voltage itself is shown in the secondary display, the Meter takes a
single measurement and updates both displays with it.
Updating Primary and Secondary Displays with Separate Measurements
If the measurement function in the primary display is different from that in the secondary
display, the Meter updates each display using a separate measurement.
Taking Voltage and Current Measurements Using the Dual Display
Most applications of the dual display listed in Table A-2 can be performed using a single
set of test leads connected to the INPUT VZYR HI and LO terminals. However, to
measure the voltage and current of an input signal requires three leads. Be sure that the
voltage and current measurements share the same common as shown in Figure A-2. Then
simply follow the precautions you would follow if you were making normal current
measurements without a current clamp.
Table A-2. Sample Dual Display Applications
Primary
Display
Secondary
Display
Applications
Volts DC Volts AC • Monitor dc level and ac ripple of power supply Troubleshoot
amplifier circuits
Volts DC Current DC • Check power supply load regulation
• Monitor UUT current draw and circuit voltages
• Monitor loop current and voltage drop across transmitter
Volts DC Current AC • Line and load regulation tests
• dc/ac or ac/dc converters
Volts AC Current DC • Line and load regulation tests
• dc/ac or ac/dc converters
Volts AC Current AC • Line and load regulation tests
• Transformer (magnetic circuit) saturation
Volts AC Frequency • Measure ac amplitude and frequency for line voltage and ac signal
analysis
• Measure frequency response of an amplifier
• Adjust ac motor control
• Read noise in telecommunication applications
• Adjust portable power generator to optimize power output
• Set frequency compensation for a network
Current DC Current AC • Measure ripple and dc current draw of switching power supply
• Measure current dissipation in protective fuse resistors used in
power supplies
• Measure ripple and noise on a line
MN MX Actual Value • Show the minimum or maximum value recorded and the present
measurement
REL Actual Value • Show actual measurement and the difference between this value
and the relative base.