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R85026A
Q85026A
U85026A
85027A
85027B
85027C
85027D
85025C
85027E
English URL
www.agilent.com/find/products
8757 System Accessories (cont.)
Network Analyzers
8757D Option 002 Power Calibrator
The 8757D’s internal power calibrator provides a 50 MHz reference
standard for characterizing the absolute power accuracy and
dynamic power accuracy of the 85037 series precision detectors.
Frequency:
50 MHz ± 0.2 MHz
Accuracy at 0 dBm:
±0.05 dB
Linearity:
(over any 10 dB range)
±0.08 dB (+20 to +10 dBm)
±0.04 (+10 to –30 dBm)
±0.06 (–30 to –50 dBm)
Waveguide Detectors and Detector Adapters Summary
For use with the Agilent 8757 only in either ac or dc detection modes
Model
Frequency
Connector
Dynamic
Return
Frequency
Dynamic
Range
Type
Range
Loss
Response
Accuracy
R85026A
1
26.5 to 40 GHz
WR-28
+10 to –50 dBm (ac mode)
12 dB
±1.5 dB
±(0.3 dB + 0.03 dB/dB)
+10 to –45 dBm (dc mode)
Q85026A
1
33 to 50 GHz
WR-22
+10 to –50 dBm (ac mode)
12 dB
±2.0 dB
±(0.3 dB + 0.03 dB/dB)
+10 to –45 dBm (dc mode)
U85026A
40 to 60 GHz
WR-19
+10 to –50 dBm (ac mode)
12 dB
±2.0 dB
±(0.3 dB + 0.03 dB/dB)
+10 to –45 dBm (dc mode)
85025C
50 to 75 GHz
WR-15
+10 to –45 dBm (typical)
9.5 dB
—
—
Option K57
3
(typical)
85025C
75 to 110 GHz
WR-10
+10 to –45 dBm (typical)
9.5 dB
—
—
Option K71
3
(typical)
85025C
1
2
SMA (m)
2
2
2
2
System Accuracy
Transmission Loss or Gain Measurement Accuracy
Transmission loss or gain measurements are made relative to a 0 dB
reference point established at calibration. Transmission measure-
ment uncertainty = dynamic power ac mismatch uncertainty.
Dynamic power accuracy is the measurement uncertainty due
to the change in power level between calibration and the measure-
ment. Mismatch uncertainty is the uncertainty due to reflections in
the measurement setup. The frequency response errors of the source,
detectors, bridge and power splitter are removed via calibration.
2
Depends upon the particular detector being used.
3
Must be used with the 85025C detector adapter.
1
The 85025 and 85026 series detectors and the 85025C detector adapter require
8757A firmware revision 2.0 or higher. To upgrade previous revisions, order the
11614A firmware enhancement.
Directional Bridge Summary
For use with the Agilent 8757 in ac or dc detection mode
Model
Frequency
Nominal
Connector –
Connector –
Frequency
Directivity
Frequency
Test Port
Range
Impedance
Input
Test Port
(dB)
Match (SWR)
85027A
10 MHz to 18 GHz
50
Ω
Type-N (f)
7 mm
0.01 to 18 GHz
40 dB
0.01 to 8.4 GHz
<1.15
8.4 to 12.4 GHz
<1.25
12.4 to 18 GHz
<1.43
85027B
10 MHz to 26.5 GHz
50
Ω
3.5 mm (f)
3.5 mm (f)
0.01 to 20 GHz
40 dB
0.01 to 8.4 GHz
<1.15
20 to 26.5 GHz
36 dB
8.4 to 20 GHz
<1.43
20 to 26.5 GHz
<1.78
85027C
10 MHz to 18 GHz
50
Ω
Type-N (f)
Type-N (f)
0.01 to 12.4 GHz
36 dB
0.01 to 8.4 GHz
<1.15
12.4 to 18 GHz
34 dB
8.4 to 12.4 GHz
<1.25
12.4 to 18 GHz
<1.43
85027D
10 MHz to 50 GHz
50
Ω
2.4 mm (f)
2.4 mm (m)
0.01 to 20 GHz
36 dB
0.01 to 16 GHz
<1.18
20 to 26.5 GHz
32 dB
16 to 30 GHz
<1.27
26.5 to 40 GHz
30 dB
30 to 40 GHz
<1.57
40 to 50 GHz
25 dB
40 to 50 GHz
typically <2.00
85027E
10 MHz to 26.5 GHz
50
Ω
3.5 mm (f)
3.5 mm (m)
0.01 to 20 GHz
40 dB
0.01 to 8.4 GHz
<1.15
20 to 26.5 GHz
36 dB
8.4 to 20 GHz
<1.43
20 to 26.5 GHz
<1.78
Transmission Measurement Uncertainty Examples
Assumptions:
• Measurement frequency = 10 GHz
• DUT input/output SWR = 1.5
• Change in power after calibration <30 dB
(+0 to –30 dBm range)
Uncertainty
85037B Precision
85025E
Component
Detector
Detector
Dynamic accuracy (±dB)
0.11
0.40
Mismatch (±dB)
0.45
0.33
Uncertainty Total (±dB)
0.56
0.73
85027 Series Directional Bridges (ac/dc)
The 85027 series directional bridges are designed to operate with
either the 8757 in ac or dc detection modes. These bridges offer high
directivity, excellent test port match, and a measurement range of
up to 50 GHz in coax.
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