Conditioning The Test Set For Call Processing - HP 8924C Application Manual

Refer to the descriptions of the deadlock conditions for *OPC, *OPC? and *WAI
commands are provided in HP-IB Common Commands chapter of the HP 8924C
Condensed Programming Reference Guide.
The *OPC, *OPC? or *WAI commands should not be used with any of the
following Call Processing Subsystem commands: :ACTive, :REGister, :PAGE,
:HANDoff, :RELease.
The Call Processing Subsystem Status Register Group should be used to control
program flow.

Conditioning the Test Set for Call Processing

It is recommended that the control program perform the following steps when first
entering the Analog Call Processing Subsystem (that is - the first time the
CONTROL
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N:\mkt\MANUALS\HP8924C\APPMOD\BOOK\chapters\amcproc.fb
Chapter 9, 264 Using the Analog Call Processing Subsystem
screen is selected during a measurement session).
Zero the RF Power meter.
There are two reasons for zeroing the RF power meter:
a When any Analog Call Processing Subsystem screen is displayed (except the
ANALOG MEAS screen) and the Analog Call Processing Subsystem is in the
Connect state, the host firmware constantly monitors the mobile station's
transmitted carrier power. If the power falls below 0.0005 Watts the error message
RF Power Loss indicates loss of Voice Channel will be displayed
and the simulated base station will terminate the call and return to the Active
state. Zeroing the power meter cancels any inherent dc offsets that may be present
within the power meter under zero power conditions. This ensures that the host
firmware makes the correct decisions regarding the presence of the mobile
stations's RF carrier.
b Zeroing the power meter establishes a 0.0000 W reference for measuring the mobile
station's RF power at the RF IN/OUT port. This ensures the most accurate RF
power measurements of the mobile stations's RF carrier at different power levels.
Using Remote (HP-IB) Control
CALL
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