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The
Arbiter Systems®, Inc. Model 1096A Dual Type IV Power Meter
is a standards-lab quality instrument based on a design of
the USA National Institute of Standards and Technology (NIST).
The Model 1096A is used with thermistor power sensors and
an external digital voltmeter to make RF power measurements
of the highest accuracy. Compare the unbeatable combination
of system-oriented features along with a price well below
older products, and you'll see why metrologists everywhere
are making the Model 1096A Dual Type IV Power Meter the standard
in precision RF and microwave power measurement.
Ease
of Integration
The Model 1096A simplifies system integration with its two
complete Type IV power meter circuits, built-in IEEE-488 interface
and multiplexed DVM output, eliminating the need for additional
interfacing hardware.
The
Model 1096A also provides for temperature stabilization of
ovenized thermistor mounts such as the Weinschel 1109, 1110,
and 1111 mounts, in addition to supporting both uncompensated
and temperature-compensated operation of mounts such as the
HP 478A, 8478A, and 486A Thermistor Mounts.
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Accuracy
Type IV power meters deliver the highest accuracy RF and microwave
power measurements possible, and have become the standard
for demanding measurements at national standards laboratories
and major calibration facilities.
The accuracy of the Type IV Power Meter is a complex function
of the DVM being used to measure its output voltage, reference
resistor errors, offset voltages and bias currents
in the self-balancing current loop, and the power level being
measured.
Due to the demanding nature of the applications in which the
Type IV power meter is used, a simple accuracy specification
is not possible, at least not without seriously overstating
the errors under some conditions.
Therefore, a detailed error analysis is recommended in each
application.
For a complete discussion of the accuracy of power measurements
made with the Type IV Power Meter, including the methods for
performing this error analysis, refer to "A New Self-Balancing
DC-Substitution RF Power Meter," by NIST's Neil T. Larson,
in the IEEE Transactions on Instrumentation and Measurement,
Vol. IM-25, No. 4, December 1976. If you have difficulty finding
this article, please contact Arbiter Systems, Inc.
1096A Specifications
Reference
Resistor :
-
| Resistance |
100
or 200 ohms, selectable |
| Accuracy |
100
ppm (0.01%) |
| Temperature
Coefficient |
≤
0.8 ppm/° C |
| Drift |
20
ppm, first year |
Operational
Amplifiers :
-
| Type |
OP-77EZ,
Analog Devices |
| Offset
Voltage |
10
µV, initial 23° C ±5° C |
| Stability |
0.3
µV/° C |
| Drift |
0.3
µV/month, typical |
| Bias
Current |
2x10-9A |
| Noise
Voltage |
0.6
µVpp, 0.1 to 10 Hz bandwidth |
| DC
Gain |
2
V/µV |
| CMRR |
1
µV/V |
DVM
Multiplexer :
- Sealed,
latching, low thermal offset relays; A, B, or Off
Temperature
Stabilizers :
- Isolated,
regulated power supply with balancing amplifier compatible
with the Weinschel 1109, 1110, and 1111 mounts, or other
75-ohm nickel/constantan self-heating bridges.
Remote
Programming Interface :
-
General
:
-
| Line
Power |
100,
120, 220, or 240 Vac, ±10%, 47 to 44-Hz, 43 VA maximum |
| Weight |
5
kg (11 lbs), net. |
| Size |
100
x 210 x 400 mm (3.95 x 8.25 x 15.8 in.)
IEC standard (19 in.) rack mount with accessory kit. |
Available
Accessories :
| Order
Number |
Description |
| 10962A |
Weinschel
Mount Cable |
| 10963A |
HP
Mount Cable (non-compensated) |
| 10964A |
HP
Mount Cable (uses second channel for compensation) |
| 10965A |
Pigtail
Leaded Mount Cable |
| 10966A |
Test
and Adjustment Kit |
| AS0014401A |
Rack
Mount Kit, single unit |
| AS0014601A |
Rack
Mount Kit, two units side-by-side |
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