Technical data

AR2010 USB Stick Synthesizer USB Programming Manual
∙ Ovals enclose command mnemonics. The command mnemonic must be entered exactly as shown
in the oval.
∙ Dotted lines indicate an optional path for passing secondary or optional keywords.
∙ Arrows and curved intersections indicate command path direction.
∙ All diagrams flow from left to right. A path may not travel to the left except in a bypass loop.
1.4 Default Units
Unless otherwise specified, the following units are assumed:
Table 2.2: Default Units
Current mA
Frequency GHz
Power dBm
Time ms
Temperature °C
Voltage Volts
1.5 Status Reporting
Status reporting is used to monitor the USB Stick Synthesizer to determine which events have occurred.
Status reporting in accomplished by configuring and reading status registers.
The USB Stick Synthesizer has the following main registers:
∙ Status Register
∙ Standard Event Register
∙ Operation Status Register
∙ Questionable Status Register
∙ Device Status Register
Status and Standard Event registers are read using the IEEE-488.2 common commands.
Operation and Questionable Status registers are read using the SCPI STAT subsystem.
1.6 SCPI Data Types
The SCPI language defines different formats for use in program messages and response messages.
Instruments are flexible listeners and can accept commands and parameters in various formats. However,
SCPI instruments are precise talkers. This means that SCPI instruments always responds to a particular
query in a predefined, rigid format.
1.6.1 <boolean> Definition
Throughout this document <boolean> is used to represent ON|OFF| <NRf>. Boolean parameters have
a value of 0 or 1 and are unitless. ON corresponds to 1 and OFF corresponds to 0.
On input, an <NRf> is rounded to an integer. A nonzero result is interpreted as 1.
Queries always return a 1 or a 0, never ON or OFF.
Applied Radar, Inc. Revision 1.0.0 7