Special Use For Stop Key; Making Coordinated State And Timing Measurements; Setup For State And Timing Measurements - HP 1630A Operating And Programming Manual

Interactive State and Timing Measurements
Model 1630A/D/G
There is a case where the measurement function performing as Slave will store its trigger before the
measurement function performing as Master . This occurs when the trace point defined for Master is a trigger
condition plus a delay period, and the trigger condition for Slave is "don't care" with no delay. When the trace
begins, the Master will look for its trigger, and the Slave will be disabled . When the Masterfinds its trigger, it will
send the "trigger found" information to the Slave . The Slave will find and store its trigger immediately, but the
Master will wait until after it has counted its specified delay.
SPECIAL USE FOR STOP KEY
When making an interactive measurement, the state and timing measurement functions must both complete
their measurements before the results of either measurement can be viewed . If one of the functions does not
complete its measurement, the analyzer may display a message such as "waiting for trigger" . If the STOP key is
pressed, the display of information from the function that was completed can be viewed . The function that
failed to complete will not offer a display because its information will not be meaningful .
MAKING COORDINATED STATE AND TIMING MEASUREMENTS
The following procedure shows how the state and timing measurement functions can perform independent
measurements using separate trigger events at the same time . This procedure also demonstrates the ability of
one of the measurement function modes (state or timing) to arm the other function to perform its trigger
recognition .
Setup for State and Timing Measurements
1 . Press the SYSTEM key.
7-2
2. Press the ROLL down arrow key to select the combined state and timing system specification assigning
8 channels to the timing analyzer . Figure 7-1 is the system specification of the 1630D. The 1630A will
have 27 state and 8 timing channels assigned in the interactive mode . The 1630G will have 57 state and 8
timing channels assigned in the interactive mode .
NOTE
The figures in this chapter are taken from the 1630D Logic Analyzer .
System Specification ------------ ROLL to Change Configuration-
--I
State Timing
Channels Channels
Figure 7-1 . Combined State/Timing Analyzer System Configuration for the 1630D