Motorola R-2550 Programming Reference Manual page 12

The R-2550 operates within the layer model in one of two modes, Standard RS-232, or Extended RS-232.
R-2600
Syntax and Data Structures
RS-232 Hardware
The R-2600 operates within the layer model in one of three modes, Standard RS-232, Extended RS-232, and
IEEE 488.2.
I
Remote
Mode
Standard RS-232
Extended RS-232
IEEE 488.2
Application programs using the Standard RX32 model can gain access to the Extended RS-232
model via the G2 command.
Standard RS-232 Mode
When the analyzer is initially powered on, it assumes all communications will occur over the RS-232 hardware
interface using the Standard RS-232 mode. On the R-2600, if activity is detected on the IEEE 488 interface, the
R-2600 will immediately switch to the IEEE 488.2 mode. The Standard RS-232 mode is completely backward
compatible with versions of software before Version VO1.0.5. Application programs written for older versions of
software can utilize the Standard RS-232 mode without change.
Extended W-232 Mode
The Extended RS-232 mode provides some additional services from the IEEE 488.2 specification while operating
over the RS-232 hardware interface. Within this mode, all of the IEEE 488.2 status and data structures and
syntactic definitions are available to provide a consistent and powerful remote interface while still relying upon
the RS-232 hardware for the low-level communications interface.
IEEE 488.2 Mode
The IEEE 488.2 mode provides a remote interface via the IEEE 488.1 hardware that is fully compliant with the
IEEE 488.2 specification. This is the only mode of operation available
important aspect of this specification is the status and error control/reporting capabilities, defmed in Section 4.
Motorola Communications Analyzer
Programming Reference
R-2550 Remote Interface Layer Model
R-2550
Specific Commands and Queries
IEEE 488.2 Common Commands and Queries
R-2600 Remote Interface Layer Model
R-2600 Specific Commands and Queries
IEEE 488.2 Common Commands and Queries
Specific
Protocols
I
Hardware
RS-232
RS-232
2
IEEE 488.2
Syntax and Data Structures
IEEE 488.1 Hardware Protocols
Backwards
Compatible
Backwards
Compatible
I
IEEE 488.2
Note
for the
Syntax
Backwards
Compatible
IEEE 488.2
IEEE 488 interface. The most