Ac Amplifier Gain; Impedance Correction Graph; El With Option - HP 400E Operating And Service Manual

Section III
on the 0.3 volt
attenuates the input.
ranges, the maximum output is 105mV. On
all other ranges, the maximum output is
V.
150m Table 3-2 shows the ac amplifier
�
gain !aCh range settmg.
Tab :·2. AC Amplifier Gain
RANGE G AIN
0.001 +40dB
+34dB
0.003
0.01 +24dB
+14dB
0.03
0 .1 +4dB
0. 3 -6dB
+20
+15
::!!
CD
0+10
I
Z
0
+5
�
U
w
0:::
0::: 0
0
U
0:::
W
-5
�
W
:E
-10
- 1 5
-20
-25
34
range and above, it
I
On the 0.00 volt
RANGE GAIN
1
-1MB
3 -26c1B
10 -36dB
30 46dB
100 -56dB
300 -66dB
I 10 100
IMPEDANCE
Figure 34. Impedance Correction Graph.
3-12. 400E WITH OPTION 01.
3-13. Operation of the 400E with Option OJ
essentially the same as o peratio n of the standard
400E' The dB scale reads from -15 to +2 instead of
+ ?
�lnci j" nl:1r.p.ci :It thp.
from J) tn
'-
for better resolution.
3-14. 400E/EL WITH OPTION 02.
3-15. Option 02 adds a relative referEnce adjustment
to the 400E/EL. This adjustment ,.llows a meter
indication to be varied by 3dB. Use the REL. REF
adjustment to set the meter at ar l Y
reference (OdB for example) in order
readings easier. When the REL. REF" djustment is in
the fully clockwise ABSOLUTE position, it has no
effect on the meter accuracy.
3-16. In all other respects, operationJf a Option 02
instrument is the same as operation of a standard
Model 400E/EL.
IK
10K.
lOOK
OHMS
.-
ModeI400E/EL
is
t op of the scale
make relative
t)