HP 3438A Operating And Service Manual page 7

Section I
Table 1-1. Specifications.
Model 3438A
DC VOLTMETER
Ranges
r
200 m V
f 2
v
i
20
v
i
200
v
+
1200
v
Max Display
f
199.9 m V
+
1.999
v
f
19.99 V
+
199.9 V
i l l 9 9 V
I
Maximum lnput: 1200 V ldc
+
peak aci
I
R a n g ~ n g Automatic or manual
I
Sensitivity: 100 p V on 200 m V range.
I
Polar~ty: Automatically sensed and d~splayed
Accuracy: 1 Year 15' to 3 0 ' ~ @ 95% RH.
200 rnV
+
(0.1% of reading
+
2 digits)
2 V t o 1 2 0 0 V
f
(0.1% of reading
+
1 digit)
Temperature Coeflkient: 0'
-
1 5 ' ~ and 30'
-
5 5 ' ~
i
( 0 1 8 % read~ng
+
0.1 digit) /'C
1
Input Resistance 10 rneg
a
f
1%
1
lnput Type: Floating 500 V max COM to ground.
Normal Mode Rejection: 40 dB at 50 Hz and 60 Hz
f
.1 Hz.
Effective Common Mode Rejection With 1 k a
unbalance is
>
120 dB at 50160 Hz
t
0.1 %
Response T ~ m e :
<
0.7 seconds to within 1 digit of final
value on any range. Add 1 second for each range
change.
AC Converter: Avg. Respond~ng rms calibrated
Ranges Max Display
200 rnV 199.9 mV
1.999
v
19.99 V
200 V 199.9 V
1200 V 1199
Maximum Input: 1700 V (dc
+
peak ac),
l o 7
volt
Hz max.
Ranging. Automatic or manual
Sensit~vity: 100 p V on 200 m V range
Accuracy
1 year, 15' t o 3 0 ' ~
@
95% R H
Temperature Coefficient: 0'
-
1 5 ' ~ and 30'
-
5 5 ' ~
f
(0.04% of read~ng
+
0.2 digits) l a c .
Minimum Reading: 20 d~gits.
lnput Impedance. Resistance: 5 rneg
a.
Shunt Capacitance:
<
50 pF
3 0 . H ~
-
50 Hz
50 Hz
-
20 kHz
20 kH7
-
100 kHz
lnput Type: Floating 500 V max COM to ground.
i
(1 .5% of reading
f
3 digits)
i
(0.3% of readlng
t
3 digits)
i
(1.5%of reading
?
10 digits)
Response Time: 1.6 seconds to within 3 digits of final
value on any range. Add 1.2 seconds for each
range change.
1
DC AMMETER
Maximum Input: 2A from
<
250 V source.
Protection: 2A1250 V fuse (normal blow)
Ranging: Manual only.
Sens~tiv~ty: 100 nA on 200 PA range.
Polarity: Automatically sensed and displayed.
Accuracy: 1 year, 15 to 30°C @ 95% RH.
2000 mA
+
(0.616 of reading
+
2 digits)
Temperature Coefficient: 0
-
15OC and 30
-
55OC
f
(.028% of reading
+
0.1 digits)l0C.
Voltage Burden:
Max Burden
at Full Scale
200 mA
<
240 m V
2000 mA
<
400 m V
lnput Type: Floating 500 V max COM to ground.
Response Time: 0.7 seconds on any range to within
1 d ~ g ~ t of final value.
AC AMMETER
Ranges Max Display
200 PA 199.9 PA
1.999 mA
20 mA 19.99 mA
200 mA 199.9 mA
2000 mA 1999 mA
Maximum Input: 2A from
<
250 V source.
Protection: 2A1250 V fuse (normal blow).
Ranging: Manual only
Sensitivity: 100 nA on 200 PA range.
Accuracy: With display of
2
20 digits.
1 year 15 t o 3 0 ' ~ 95% RH