Operators  Familiarization
Measurement  Compatibility and  Error 
Messages
CURSORS VOLTS measurements cannot occur when the VOLTS/DIV VAR 
control  for  the  channel  being  measured  is  not  in  the  detent  position.  The 
displayed error message is  “MEAS SOURCE VAR  OUT  OF  DETENT.”
TIME  and  1/TIME  measurements  cannot  occur  when  the  SEC/DIV  VAR 
control is  out  of the  detent  position.  The displayed error message  is  “VAR 
SECS/DIV  OUT  OF  DETENT.”
When  in  ALT  or  B  Horizontal MODE,  and the  B  Trigger  MODE  is  not  RUNS 
AFTER,  a  greater  then  symbol  (>)  will  appear  before  the  delay-time 
readout.  The  readout value displayed is the  delay time  between the  A trig
ger  and  the  time  a  B  trigger  can  be  accepted  by  the  trigger  system.  A 
question  mark  (?)  will  appear  in  front  of  the  delay time  readout  for delay 
measurements when the  DELAY time is set to 0.25 division or less from the 
beginning of the  sweep.
If a time  measurement  is  selected when in ALT  or B  Horizontal  MODE  and 
the B Trigger MODE is NOT RUNS AFTER,  the  displayed error message is 
"USE  RUNS-AFTER-DELAY  TRIG  MODE."
Measurements  in  Single  Sequence  Mode
All cursor measurements  run  continuously during SGL SEQ Trigger MODE. 
The  readout  and/or  cursors  are  displayed  briefly  during  single  sequence 
mode for making a  photographic  record  (or they  may be configured to re
main  on—see  the  discussion  on  Configure  Menu  in  the  “SERVICE  MENU 
FEATURES"  part of this section.)  The displayed readout is the value of the 
measurement  at the  instant  it is  displayed.
B  Trigger  AUTO  LEVEL  acquisitions  do  not  occur  when  the  A  Trigger 
MODE  is  SGL SEQ.
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2245A  Operators