HP 5335A - Page 58

Operation and Programming
3-201, The Wait to be Addressed mode must be active if you want an SRQ generated at the end
of the measurement. Status Bit 1 can be used to monitor the 5335A for the end of measurement
occurrence. This bit is effective only if the WAIT mode is ON.
3-202, When receiving trigger level data it is recommended that the WAIT mode be ON. This
will assure no loss of data. However, the TRIG LVL function is unique in that it does not show a
display until after it outputs to the display. Therefore, the WAIT mode should be turned OFF if
you wish for the display to update.
3-203. Output of Statistics
3-204. For measurements using statistics the individual measurements are notsentout. Only the
result of the statistical calculation is output. The prefix alpha character will be the same as the
normal measurement.
3-205. The Special Output command "SO" can be sent to tell the 5335A to send additional
secondary data when statistics are enabled:
» When STD DEV is on and SOI has been sent the following data is given in two complete
strings:
STD DEV
MEAN (of the same sample, preceded with the letter "M”)
• When MEAN is on and SOI has been sent the following data is given in three complete
strings:
MEAN
MIN (of the same sample, preceded with the letter "N”)
MAX (of the same sample, preceded with the letter “X")
NOTE
Secondary statistical data will wait for RFD to be true if the
listening device is not able to receive the data immediately.
3-206. SPECIAL FUNCTIONS
3-207. Functions 17, 18, 19, and 20 are additional functions that are available in the 5335A.
17 FREQ B
18 TIME B—A
19 TOT A-B
20 PULSE B
These functions are accessed via the HP-IB through the normal FN or FU command, however,
they may also be accessed manually through the keyboard. This is an exampleof invoking FREQ B,
function 17:
Press: SCALE SMOOTH 17 ENTER
3-208. After pressing SMOOTH the display will show the word "SPECIAL”. After pressing ENTER
the counter will be in FREQ B. No function lamp indication is given for these special functions.
• When using TOTALIZE A-B output is given only after the gate is dosed. To start the totalizing,
a pulse from B must first be received. The TOT A-B (special Function 19) is armed by B.
Closing the gate is also synchronized.
® Diagnostics are programmed by sending FN99, followed by a diagnostic code that is
programmed into the SCALE register. For example, FN99 MS12, calls up diagnostic 12.
(See chapter VIII). Via the keyboard the diagnostics are called similarly. Press SCALE,
SMOOTH 99 ENTER, then SCALE 12 ENTER.
3-42
Model 5335A