Section
I
Table
1-1.
Specifications.
Model
3438A
DC
VOLTMETER
Ranges
r
200 mV
f2
v
i
20
v
i
200
v
+
1200
v
Max Display
f
199.9 mV
+
1.999
v
f
19.99 V
+
199.9 V
ill99 V
I
Maximum lnput: 1200 V ldc
+
peak aci
I
Rang~ng Automatic or manual
I
Sensitivity: 100 pV on 200 mV range.
I
Polar~ty: Automatically sensed and d~splayed
Accuracy: 1 Year 15' to 30'~
@
95% RH.
200
rnV
+
(0.1% of reading
+
2 digits)
2Vto
1200V
f
(0.1% of reading
+
1 digit)
Temperature
Coeflkient: 0'
-
15'~ and 30'
-
55'~
i
(018% 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
ka
unbalance is
>
120 dB at 50160 Hz
t
0.1
%
Response T~me:
<
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),
lo7
volt
Hz max.
Ranging. Automatic or manual
Sensit~vity: 100 pV on 200 mV range
Accuracy
1
year, 15' to 30'~
@
95% R
H
Temperature Coefficient: 0'
-
15'~ and 30'
-
55'~
f
(0.04% of read~ng
+
0.2 digits) lac.
Minimum Reading: 20 d~gits.
lnput Impedance. Resistance: 5 rneg
a.
Shunt Capacitance:
<
50 pF
30.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 mV
2000 mA
<
400 mV
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 to
30'~ 95% RH
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