HP 4284A - Page 108

2.
Press
NNNNNNNN
ON to set the bias current isolation function to ON. Press
NNNNNNNNNNN
OFF to set the bias current isolation function to OFF.
Averaging Rate
Description
The HP 4284A's averaging rate function arithmetically averages the
results of two or more A/D conversions. (The A/D conversion time
can b e set in the INTEG eld.) The number of conversions averaged
can b e set from 1 to 256, in steps of 1.
Front Panel Operation for Setting the Averaging Rate
Perform the following steps to set the averaging rate.
1. Move the cursor to the AVG eld. The following softkeys will b e
displayed.
NNNNNNNNNNNNNNNNNNNN
INCR *
This softkey is used to increment the averaging rate. (1, 2, 4, 8,
16, 32, 64, 128, and 256)
NNNNNNNNNNNNNNNNNNNN
DECR +
This softkey is used to decrement the averaging rate. (1, 2, 4, 8,
16, 32, 64, 128, and 256)
2. Use the softkeys to set the a
veraging rate, or enter the averaging
rate using the numeric entry keys, and 4
ENTER
5 .
Delay Time
Description (Refer to Appendix G.)
The HP 4284A's delay time function allows you to set a trigger delay
so the HP 4284A will delay the start of the measurement after it is
triggered. (When the list sweep measurement is performed, the
HP 4284A will delay the start of the measurement at eachsweep
point using the trigger delay time.) The trigger delay time can b e set
from 0 s to 60 s in 1 ms steps. This function is useful if a comp onent
handler triggers the HP 4284A b efore stable con
tact is made with the
device under test ( dut ).
Front Panel Operation for Setting the Delay Time
Perform the following steps to set the delay time.
1. Move the cursor to the DELAY eld.
2. Enter the delay time using the numeric entry keys. When one of
the numeric entry keys is pressed, the following unit softkeys will
be displayed, these can b e used instead of
4
ENTER
5 .
NNNNNNNNNNNNNN
msec
NNNNNNNNNNN
sec
MEAS SETUP Menu 4-11