user manual
Table Of Contents
- 45 Dual Display Multimeter
- 1. Introduction
- 2. Getting Started
- 3. Operating the Meter From the Front Panel
- 4. Applications
- 5. Operating the Meter Using the Computer Interface
- Introduction
- Preparing the Meter for Operations via the RS-232 Interface
- Preparing the Meter to be Operated via IEEE-488 Interface
- Getting Started With An Installation Test
- How the Meter Processes Input
- How the Meter Processes Output
- Triggering Output
- Service Requests (IEEE-488 Only and Status Registers
- Computer Interface Command Set
- IEEE-488 Capabilities and 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
- Sample Program Using the RS-232 Computer Interface
- Sample Programs Using the IEEE-488 Computer Interface
- 6. Maintenance
- Appendices
45
Users Manual
3-10
Table 3-7. Maximum Sinewave Inputs for Frequency Measurements
Range Maximim Input Voltage
300 mV 1 V rms
3 V 6 V rms
30 V 60 V rms
300 V 750 V rms
750 V 750 V rms
The input signal sensitivity is listed under the frequency specifications in Appendix A.
These values are based on sine waveforms. The signal level must be increased for lower
crest factor inputs (the crest factor is the ratio of the peak voltage to the ac rms voltage of
the waveform). If the input signal is below the required level, the frequency will be
displayed as zero. If the measurements are unstable, the input signal may be near the
threshold level.
Selecting A Function Modifier
(K, I, H, J)
Selecting a function modifier (see Figure 3-7) causes the meter to perform an action on
an input (e.g., convert to decibels or compare to another value) before a reading is
displayed. Function modifiers can be used in combination. (See “Using Function
Modifiers in Combination," later in Chapter 3.)
To use a function modifier, press a function button to select a primary function, then
press a function modifier button (or buttons). Modified readings are shown only on the
primary display.
After a function modifier has been selected, pressing any (white) function button turns off
all modifiers, causes the secondary display to go blank, and returns unmodified readings
to the primary display.