Amplifier Operation - HP 412A Operating And Service Manual

Model 4 12A
Section 111
3-12. AMPLIFIER OPERATION. at full scale; maximum rated load current is
1 . O
mA. Load
currents in excess of 1.0 mA (less than 1000 ohms load
3-13. The Model 412A/AR DC Amplifier Output may be resistance) may cause errors in meter indication and
used to drive devices
such
as an analog recorder to provide a amplifier
gain.
Amplifier gain is from +lo00 on the
,001
permanent record of measurements. Output level is 1 .O volt range to -1000 on the loo0 range.
4
Y
00
1 29-5
I '
3-3