HP 1630A Operating And Programming Manual page 39

State Measurements
Model 1630A/D/G
ACTIVITY LINE
The activity line under each pod in the State [Assignment] Format Specification indicates the channels on
which voltage changes are taking place . A double-ended arrow indicates an active channel (> 400 Hz) and a
single bar indicates a steady state, either high or low .
LABEL ASSIGNMENTS AND POLARITY
4-6
1 . Move the cursor to the label column in the State [Assignment] Format Specification menu . A message
will appear on the display screen indicating a new label may be added. Press INSERT and a new label
field will be added . Labels are entered with numeric keys and/or the blue shift key and the alphabetic
characters. Up to eight labels may be assigned and each label may consist of up to five characters .
(Labels are deleted by pressing the blue shift key and and DELETE when the cursor is anywhere on the
line of the label to be deleted .)
2 . Add the label ADDR to the label column in the new field . Notice the field to the right of the label field . By
using the NEXT[] or PREV[] key, + or - may be selected to indicate whether a voltage above the
threshold voltage is to be displayed as a 1 or 0 . A+ in this field indicates voltages above the threshold are
1 and voltages below are 0 . Choosing - gives the opposite display .
NOTE
Polarity choice does not affect the waveform display.
3. Press and hold the CURSOR right arrow to move the cursor across the label field to bit 6 of pod 3 . This is
the MSB (most significant bit) of the address channels connected to the analyzer .
NOTE
Pod2 will be off-screen in the 1630G format menu, use the ROLL keys for bit-by-bit
shifting of the pods, or the blue shift key and the ROLL keys to shift entire pod
displays .
4. Press either NEXT[] or PREV[ ]key sixteen times, or hold either key down, until sixteen asterisks appear
in the entries beneath Pod3 and Pod2 . The asterisks assign the corresponding probe bits to the label
designated ADDR .
5. Press LIST . The bits that are assigned to the label ADDR are now listed in anew label column, ADDR, in
the State Listing . Figure 4-4 is the state listing with the address bits assigned to the label ADDR .
NOTE
When a trace is run, data is acquired on all connected channels (assigned to a label
or not) . The format may be modified and new information may be displayed
without taking a new trace . Acquired data may be manipulated by changing the
format menu .
6. Press FORMAT and add labels for DATA lines and STAT (status) lines the same waythe ADDR label was
added . Assign the appropriate bits (as connected in chapter 2) to the added labels .
NOTE
The bits assigned to labels need not be physically adjacent . Bit 2 in Pod1 may be
combined with bit 5 in Pod3 for assignment of a single label consisting of the two
probe channels .