Agilent 8757D Data Sheet

Network Analyzers

278 HP 8757 System Accessories

HP R85026A
HP Q85026A
HP U85026A
HP 85027A
HP 85027B
HP 85027C
HP 85027D
HP 85027E

5

HP 8757D Option 002 Power Calibrator

The HP 8757D’s internal power calibrator provides a 50 MHz reference
standard for characterizing the absolute power accuracy and dynamic
power accuracy of the HP 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 HP 8757 only in either ac or dc detection modes

Model range type range loss response accuracy
HP R85026A126.5 to 40 GHz WR-28 +10 to –50 dBm (ac mode) 12 dB ±1.5 dB ±(0.3 dB + 0.03 dB/dB)

HP Q85026A133 to 50 GHz WR-22 +10 to –50 dBm (ac mode) 12 dB ±2.0 dB ±(0.3 dB + 0.03 dB/dB)

HP 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)

HP 85025C 50 to 75 GHz WR-15 +10 to –45 dBm (typical) 9.5 dB — —
Option K57

HP 85025C 75 to 110 GHz WR-10 +10 to –45 dBm (typical) 9.5 dB — —
Option K71

HP 85025C

1

The HP 85025 and 85026 series detectors and the HP 85025C detector adapter require
HP 8757A firmware revision 2.0 or higher. To upgrade previous revisions, order the
HP 11614A firmware enhancement.

Frequency Connector Dynamic Return Frequency Dynamic

+10 to –45 dBm (dc mode)

+10 to –45 dBm (dc mode)

+10 to –45 dBm (dc mode)

3

3

1 2

SMA (m)

2222

(typical)

(typical)

2

Depends upon the particular detector being used.

3

Must be used with the HP 85025C detector adapter.

HP 85027 Series Directional Bridges (ac/dc)

The HP 85027 series directional bridges are designed to operate with
either the HP 8757 in ac or dc detection modes or with the HP 8756 or
8755 in ac detection mode. These bridges offer high directivity, excel­lent test port match, and a measurement range of up to 50 GHz in coax.

Directional Bridge Summary For use with the HP 8757 in ac or dc detection mode or with the 8756 or 8755 in ac detection mode only

Model range impedance input test port Frequency (dB) Frequency match (SWR)
HP 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

HP 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

HP 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

HP 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

HP 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

1

The HP 85037A/B specifications are applicable when used with the HP 8757D scalar
network analyzer. The absolute power accuracy and dynamic power accuracy specifi­cations apply after a calibration via the HP 8757D Option 002’s internal power calibrator.

2

Option 001 changes to a 7-mm connector.

3

The HP 85025 and 85026 series detectors and the HP 85025C detector adapter require
HP 8757A firmware revision 2.0 or higher. To upgrade previous revisions, order the
HP 11614A firmware enhancement.

Frequency Nominal Connector– Connector– Directivity Test port

8.4 to 12.4 GHz <1.25

12.4 to 18 GHz <1.43

20 to 26.5 GHz 36 dB 8.4 to 20 GHz <1.43

20 to 26.5 GHz <1.78

12.4 to 18 GHz 34 dB 8.4 to 12.4 GHz <1.25

12.4 to 18 GHz <1.43

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

20 to 26.5 GHz 36 dB 8.4 to 20 GHz <1.43

4

Dynamic accuracy refers to measurement accuracy as power varies (in dB)
from a 0 dBm reference. 25˚ ±5˚C, 50 MHz.

5

DC mode, 25˚ ±5˚ C.

20 to 26.5 GHz <1.78