User manual
Table Of Contents
- 1.1 Feature Overview
- 1.2 Input Power and Fuse Requirements
- 1.3 Package Contents
- 2.1 Front Panel Overview
- 2.2 Screen Display
- 2.3 Front Panel Menu Options
- 2.4 Front Panel Menu Overview
- Rear Panel Summary
- 2.6 Power up
- 3.1 Overview
- 3.2 Measuring Voltage
- 3.3 Measuring Current
- 3.4 Measuring Resistance
- 3.5 Measuring Frequency and Period
- 3.6 Measuring Continuity
- 3.7 Testing Diode
- 3.8 Math Functions
- 4.1 Measurement configuration
- 4.2 Trigger Operations
- 4.3 Buffer Operations
- 4.4 Limit Operations
- 4.5 System Operations
- 5.1 Selecting an Interface
- 5.2 USB & RS-232 Interface Operation
- 5.3 GPIB Interface operation (model 5492BGPIB only)
- 5.4 Data Format
- 6.1 Command Structure
- 6.2 Command Syntax
- 6.3 Command Reference
- 7.1 Frequently Asked Questions
- 7.2 Error Messages
- 8.1 Technical Specifications
SCPI Command Reference
96
Description:
The command is used to select the units for DCV measurement. With volt (V) unit selected, normal
AC voltage measurement are made. With DB unit selected, DC dB voltage measurements are
performed. With DBM units selected, DC dBm voltage measurements are made.
:DB:REFerence <n>
Command Syntax:
:UNIT:VOLTage:DC:DB:REFerence <n>
Command parameter:
<n> = 1e-7 to 1000 Specify reference voltage in volts
Query:
:DB:REFerence? Query reference voltage
Description:
This command is used to specify the dB reference level. When DB unit is selected, DCV dB
measurements are made using the specified reference voltage.
The reference level is specified in volts and is not range dependent. For example: a dB reference
level of 1 is 1 V on all DCV measurement ranges.
:DBM:IMPedance <n>
Command Syntax:
:UNIT:VOLTage:DC:DBM:IMPedance <n>
Command Parameter:
<n> = 1 to 9999 Specify reference impedance
Query:
:DBM:IMPedance? Query reference impedance
Description:
This command is used to specify the dBm reference impedance level. When dBm unit is selected,
DCV dBm measurements are made using the specified reference impedance.
The reference impedance is specified in ohms and is not range dependent. For Example: a dBm
reference level of 500 is 500 on all DCV measurement ranges.