Page 1
WIDE
BAND
ANGLE
MODEL
o
DIRECT
PHASE
VOLTMETER
321
Y
READING
OF-
s
t
0.5"
ACCURACY,
O0
TO
360"
TOTAL VOLTAGE
FUNDAMENTAL
QUADRATURE
PHASE
The Model
sensitive null detector, a phase
and a phase meter. Operating over the frequency
range of 10
acteristics make
and network design, vibration analysrs, telemetry
system measurements, biomedical research, and
similar
complex signals and their vector components
wrde range of frequencies. The Model
rates proprietary circuit techniques that ellminate
the use
rnarntalning accuracy,
monic rejection of
Automatic gain control
the necessity of manually adjusting the
the reference input for proper operation. It accepts
signal levels from
applicatrons requlrlng the measurement of
of
ANGLE
321
combines In one Instrument, a phase
Hz
to 100 KHz, ~ts wideband char-
it
ideally suited for use in
reactwe phase shifters
stability
40
dB
150
MV
VOLTAGE
VOLTAGE
sensitive
and
and worst case har-
(AGC)
circuitry eliminates
to
150
volts.
voltmeter
Amplifier
over
321
incorpo-
filters while
amplitude
of
2
pV
NULLING SENSITIVITY
e
DYNAMIC
e
HIGH
Competitor PAV's have up to 8 separate frequency
bands with four associated controls and the necessity of changing plug-ins. The greatly simplified
eration of the Model
especially when making spot measurements over
wide dynamic range.
The
321
uses the latest technological advances for
state-of-the art performance at reduced cost.
a
Longer calibration intervals, reduced interval adjustments and increased reliability are standard features which far exceed anything previously avail-
able.
A
key
featureef the
to frequency drift once in lock. Should the reference
and/or signal voltage change, the instrument will not
drift off frequency as
Wideband PAVs. This feature further red~ices errors
caused by no sync conditions and considerably reduces overall measurement time.
RANGE
HARMONIC
321
is a distinct advantage,
321
may
be the case with other
lOHz
REJECTION
is its non-susceptibility
TO
IOOKHz
op-
An
automatic lock feature enlarges its lock capture
range when searching for a lock and increases the
filtering once in lock
lock indicator signifies when in or out
frequency ranges can be selected:
100
Hz
to
1
KHz,
KHz.
to
improve frequency stability.
10
1
KHz
to 10
KHz
and 10
of
lock. Four
Hz
to
KHz
100
to
Hz,
100
As a phase meter, angles are displayed on
parallex-free Scale calibrated in
A
High harmonic and noise rejection perinits meas-
in
urements to be made
of distorted
racy.
AC
signals with minimal effect on accu-
the real world environment
.5"
a
increments.
Page 2
In
addition to phase angle; total, fundamental,
phase and quadrature voltage
with
respect
to
an arbitrary
High nulling sensitivity is
ments ability to accommodate overloads up
times
the full scale value of
An overload indicator warns the
10X
capability is exceeded. The large, easy to
read,
illuminated
zero-center
can
be
phase-shifted
provided
the
by
voltage range
operator
meter
measured
reference.
the
instru-
to ten
in
use.
if
the
and
calibrated phase dial minimized operation
fatigue. The Model
isolation for those applications
signal low cannot be grounded due
presences of ground loops.
321
has
broadband
10
signal
where
to
the
the
meg. ohm input
impedance minimizes errors due to loading.
The
321's
makes
versatility,
it
ideally suited for both laboratory and pro-
accuracy, and ease of
use
duction line use.
in
SIGNAL CHANNEL
Voltage Range- 300pV to 300V full scale
decade increments), isolated.
Max:
500 Volts rrns.
lnput Impedance- 10MR shunted by 100pF nominal.
Noise-
Fund., in-phase, quad.: iOpV.
Nulling
OverIoad Capability-
when making an in-phase or quadrature measurement on
signal
Common
than two percent of full scale the maximum allowable common
mode voltage
Vcrn(Vrrns)
f
lOHr
300V max.
is
kHz
Total mode:
Sens.-
with
a magnatudc ten times
Mode Rejedon- For common mode error of less
to
lOOkhz
400
Volts dc.
35rV.
Less than 2pV, in-phase and quad. modes.
The
(Vcm) is:
=
100
f
in
13
ranges
(112
accuracy shall not be degraded
the
full scale voltage range.
a
SPECIFIGATiONS
(Subject to
RANGE
Voltage- Signal: 300~V to300V fuil scale.
Reference: 150mV to
Frequency- All functions: 10Hz to 100kHz.
Fund., in-phase, quad. covered in four bands: lOHz to 100 Hz,
lOOHz to IkHz, lkHz to lOkHz, 10kHz
calibrated 10 to
within theseiectedrange. A lockindicator indicateswhen in and
out of frequency lock. Lock Range: 2 10% min.
Phase-
increments
(O0, 90°, 180"nd 270" function selector.
ACCURACY
Voltage- Total: t 2%
Phase- lOHz to
or
sect~on Fig VI).
Change)
150V
rms.
to
100
enables setting of the proper frequency
0-360° continuous.
from
-6Vo
Fund, In-Phase Quad: 10 Hz-TO kHz
70 kHz-1M1 kHz
32Hz
50Hz to 20kHz
20kHz to 50kHz ?0.Bo
5OkHz to 100kHz + 1 5"
3%
full scaIeangla~!sing ECosBcharacteristics (See213C
32Hz
to 50Hz _t0.8O
Phase
+
96a.Rcsoluti~n
of full scaie.
&3%
+
1.Y
k0
5"
100kHz. Venier dial
dial calibrated in
isO.lSq..Four
futl
scaie
-t2%
0.5O
quadrant
full scale
REFERENCE
Vottage
enrrre freq. range. 200 Volts dc max.
Input Impedance- 1
Range-
HARMONIC
Fund. in-phase, quad. modes:
Even
order harmonics : 60dB
Odd
order harmonics
CHANNEL
150mV to
REJECT
150V
MQ
shunted by lOOpF nominal.
ION
50dB
:
rrns, ~solated,
typically.
AGC
GENERAL
Meter- Scale: 3-0-3
Type:
Low
mechanical zero adjust accessable from front panel.
Power-
0.5A
6
foot line cord with ground pin.
Size-
(13.34cm H x 42.55cm
Adaptors are included for standard 19" rack mounting.
Weight-
friction, taught band, illuminated, mirrored scale,
1
151230V ac
(1 15V) or 0.25A
5
114"H
30 ibs. (13.6Kg) nominal net.
(60
div), 10-0-10 (100
-c
15O/0, 45Hz
(230V).
x
16
314"W x 16 118"D.
W
x
40.95cm
div).
to
440Hz, 30VA - fused for
D).
over the
RACK
MOUNTING-
AOAPTORS
SUPPLIED
Patent
Pending
Loading...