Agilent Technologies 8719D User Manual page 626

HP-IB Status Indicators
When the analyzer is connected to other instruments over the HP-IB, the HP-IB status
indicators illuminate to display the current status of the analyzer. The HP-IB status indicators
are located in the instrument-state function block on the front panel of the network analyzer.
R = Remote Operation
L = Listen mode
T = lhlk mode
S = Service request (SRQ) asserted by the analyzer
Bus Device Modes
The analyzer uses a single-bus architecture. The single bus allows both the analyzer and the
host controller to have complete access to the peripherals in the system.
Three different controller modes are possible in and HP-IB system:
system-controller mode
talker/listener mode
pass-control mode
GRAPHICS PLOTTER
SYSTEM CONTROLLER
Figure 11-3. Analyzer Single Bus Concept
D I S K D R I V E
H P 87190/200/22D
Compatible Peripherals 11-21