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HP4402.book : chapter2.fm 7 Wed Apr 23 15:29:05 1997
Power Meter Operation
Calibrating the Power Meter
HP EPM-442A User’s Guide 2-7
Table 2-1: Connecting the HP 8480 Series Power Sensors During Calibration
Sensor
Model
Connection Requirements
HP 8481A
HP 8481H
HP 8482A
HP 8482H
These power sensors connect directly to the reference calibrator.
HP 8481D
HP 8484A
Prior to the power meter being calibrated an HP 11708A 30 dB
reference attenuator should be connected between the power
sensor and the reference calibrator. This attenuator must be
removed from the power sensor input prior to making
measurements.
HP 8483A This power sensor requires a 75 Ω (f) to 50 Ω (m) N-Type adapter
(1250-0597) to connect to the reference calibrator. This adapter
must be removed from the power sensor input prior to making
measurements.
HP R8486A
HP Q8486A
HP R8486D
HP Q8486D
HP W8486D
The waveguide power sensors have two connectors. The N-Type
connector is the one which is used to calibrate the power meter.
HP 8481B
HP 8482B
These power senors are configured with an attenuator. Prior to
the power meter being calibrated, this attenuator must be
removed. The attenuator must be reconnected prior to making
measurements.
HP 8485A This power sensor requires an APC 3.5 (f) to 50 Ω (m) N-Type
adapter (08485-60005) to connect to the reference calibrator.
HP 8485D Prior to the power meter being zeroed and calibrated an
HP 11708A 30 dB reference attenuator and an APC 3.5 (f) to
50 Ω (m) N-Type adapter (08485-60005) should be connected
between the power sensor and the reference calibrator. This
attenuator must be removed from the power sensor input prior to
making measurements.
HP 8487A This power sensor requires an APC 2.4 (f) to 50 Ω (m) N-Type
adapter (08487-60001) to connect to the power meter.
HP 8487D Prior to the power meter being zeroed and calibrated an
HP 11708A 30 dB reference attenuator and an APC 2.4 (f) to
50 Ω (m) N-Type adapter (08487-60001) should be connected
between the power sensor and the reference calibrator. This
attenuator must be removed from the power sensor input prior to
making measurements.