Measurement Accuracy And Speed; Setting The Range - Agilent Technologies E Series Operating And Service Manual

Making Measurements

Measurement Accuracy and Speed

Measurement Accuracy and Speed
The power meter has no internal ranges. The only ranges you can set are
those of the Agilent E- series E9300 power sensors (and other Agilent E-
series power sensors). With an Agilent E- series E9300 power sensor the
range can be set either automatically or manually. Use autoranging when
you are not sure of the power level you are about to measure.
Caution To prevent damage to your sensor do not exceed the power levels specified in the
section "Maximum Power" on page 37.
The Agilent 9304A sensor is DC coupled. DC voltages in excess of the maximum value (5
Vdc) can damage the sensing diode.

Setting the Range

There are two manual settings, "LOWER" and "UPPER". The LOWER range
uses the more sensitive path and the UPPER range uses the attenuated path
in the Agilent E- series E9300 power sensors (see Table 2- 1).
The default is "AUTO". In AUTO the range crossover value depends on the
sensor model being used (see Table 2- 2).
30
Table 2-1 Sensor Ranges
Sensor
E9300/1/4A –60 dBm to –10 dBm
E9300/1B –30 dBm to +20 dBm
E9300/1H –50 dBm to 0 dBm
Table 2-2 Range Crossover Values
E9300/1/4A
±0.5
-10 dBm dBm
LOWER range
–10 dBm to +20 dBm
+20 dBm to +44 dBm
0 dBm to +30 dBm
E9300/1B
±
+20 dBm 0.5 dBm
UPPER range
E9300/1H
±
0 dBm 0.5 dBm