HP 3336A Operating Manual page 29

Operation
3-35. To modify the present value of any operating parameter:
1. Turn the Modify group ''ON'' by pressing
the ON/OFF key. ''ON"' status is indicated by the
light in the center of this key.
2. Press one of the horizontal arrow keys to
move the flashing digit to be modified one position
to the left or right. This flashing digit is the least
significant digit that will be modified.
3. Rotate the Tuning Knob clockwise to increase
the flashing digit and counterclockwise to decrease
it. This is a two speed control.
That is, if the Tuning Knob is rotated slowly, the flashing digit increases (decreases) by one.
If, however, the Tuning Knob is rotated faster (> .5 rpm) the flashing digit will increase
(decrease) by three.
NOTE
Attempts to enter or modify operating parameters beyond the
capabilities of the instrument are ignored and result in the word
ERROR followed by a number to be displayed for one second.
Refer to the Error Code Messages to determined the exact nature
of the programming problem.
3-36. Programming Errors.
3-37. The word ''ERROR'"' followed by a number will be displayed for one second after a
programming error occurs. Refer to the error code messages to determine the nature of the
programming problem.
Error Code
Rn wu fk WN —
8
9
Message
Value too large or too small
Incorrect units
---Not used---
Sweep time too long or too short.
---Not used---
Sweep bandwidth too small or start fre-
quency greater than stop frequency in
log sweep
Unrecognized HP-IB mnemonic received
Unrecognized HP-IB character received
Option does not exist
3-38. F. bound Err. For added flexibility, the actual programmable frequency limit of
every front panel output is from 10 Hz to 20.999 999 999 MHz. However, the instrument
may not meet its stringent specifications when operated outside the frequency limits of each
output. As a warning, ''F. bound Err'' will be displayed for 1 second after a frequency is
entered that exceeds these frequency limits. These limits are printed on the front panel just
below each output select key and are listed in Paragraph 3-14.