I can't really find anything specific in the manual relating to the ACI mode. I don't know if those little footnote tips are applicable to ACI mode... I guess I should email agilent or wait longer.
Specifications are for 1-hour warm-up at 61
?2digits,
Slow ac filter, sinewave input.
[ 2 ] Relative to calibration standards.
[ 3 ] 20% overrange on all ranges, except 750 Vac, 3 A range.
[ 4 ] Specifications are for sinewave input >5% of range.
For inputs from 1% to 5% of range and <50 kHz,
add 0.1% of range additional error. For 50 kHz to 100 kHz,
add 0.13% of range.
[ 5 ] 750 Vac range limited to 100 kHz or 8x10
7
Volt-Hz.
[ 6 ] Typically 30% of reading error at 1 MHz.
[ 7 ] For frequencies below 100 Hz, slow AC filter specified
for sinewave input only.
[ 8 ] For 1 k?unbalance in LO lead.
[ 9 ] Maximum reading rates for 0.01% of ac step
additional error. Additional settling delay required
when input dc level varies.
[ 10 ]For External Trigger or remote operation using default
settling delay ( Delay Auto ).
[ 11 ] Maximum useful limit with default settling delays defeated.
[ 12 ]Speeds are for 41
?2digits, Delay 0, Display OFF, and
Fast A