Tektronix CMD 80, User Manual

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Appendix E: Remote Control Commands
E–8
CMD 80 Digital Radiocommunication Tester User Manual
and CONFigure:BSTation tree of commands. The instrument then enters the
MINI state while it waits for the phone to register.
Registration is the process whereby the mobile station under test receives the
signal from the base station simulator in the tester, decodes it, synchronizes to
the system timing, and sends back a signal identifying itself. The registration
process is under control of the mobile station. However, since most further
commands affecting the mobile station cannot be sent until it is registered, a
remote control program must know when registration is accomplished. This
information can be obtained in several ways, either by polling the tester state
until the mobile station registers, or by enabling and then waiting for a GPIB
SRQ when the phone registers.
One way of determining registration is through the CMD condition register.
Registration causes an event to be recorded in the CMD register that can be read
with the STATus:OPERation:CMD[:EVENt]? query. This event can be enabled
to cause a GPIB SRQ. (No SRQ is possible when using RS-232 control.)
Alternatively to the above, the state of the tester can be read with the STA-
Tus:DEVice? query. When registration occurs, the tester automatically changes
to the idle state (MIDL, AMID, or TMID depending on the system selection).
In the MIDL state, the PROCedure:CTMStation:CALL TEST command
establishes a call to the mobile station using CDMA service Option 2. The state
of the tester, as shown by the STATus:DEVice? query, changes to CE2 when the
call is established.
NOTE . Service Option 9 is used when a call is established using the 13k rate;
however, the instrument state is CE2.
When switching between local and remote, in either direction, the tester goes to
the IDLE state.
Analog (Option B82). When the tester receives the PROCedure:SELect:TEST
SIGnal command, the tester turns on its Analog RF source with the setting
established by the CONF:COMB and CONF:ABSTation tree of commands. The
instrument then enters the AMIN state while it waits for the mobile station to
register.
Registration is the process where the mobile station under test receives the signal
from the base station simulator in the tester, decodes it, and sends back a signal
identifying itself. When the mobile station registers, the state of the tester, as
shown by the STATus:DEVice? query, will change to AMID.
In the AMID state, the PROCedure:CTMStation:CALL ATESt command
establishes a call to the mobile station. The state of the tester, as shown by the
STATus:DEVice? query, changes to ACE when the call is established.