User`s guide

8 Using N8480 Series Power Sensors
196 N1911A/1912A P-Series Power Meters User’s Guide
Introduction
The N8480 Series power sensors is a replacement for the 8480 Series
power sensors (excluding the D- model sensors) with build- in Electrically
Erasable Programmable Read- Only Memory
(EEPROM)
1
.
The N8480 Series power sensors is used for measuring the average power
supplied by RF or microwave source or a device-under-test (DUT). The
N8480 Series power sensors places a 50 ohm load on the RF or microwave
source. The power meter indicates the power dissipated in this load in W
or dBm.
The N8480 sensors (excluding Option CFT) measure power levels from
–35 dBm to +20 dBm (316 nW to 100 mW), at frequencies from 10 MHz to
33 GHz and have two independent power measurement path (upper and
lower range).
Table 8 - 14 Power range in the Range setting
Meanwhile, the N8480 sensors with Option CFT only measure power levels
from –35 dBm to +20 dBm (1 µW to 100 mW) in single range.
Similiar to the E- Series power sensors, the N8480 Series power sensors
are also equipped with EEPROM to store sensor’s characteristics such as
model number, serial number, linearity, temperature compensation,
calibration factor
1
and so forth. However, the calibration factor table
stored in EEPROM is not applicable for N8480 Series power sensors with
Sensor Range Setting Lower Range Upper Range
N8481/2/5/7/8A
and N8486AQ/AR
excluding Option CFT
AUTO (Default) –35 dBm to –1 dBm –1 dBm to +20 dBm
LOWER –35 dBm to –1 dBm -
UPPER
2
- –35 dBm to +20 dBm
N8481/2B excluding
Option CFT
AUTO (Default) –5 dBm to +29 dBm +29 dBm to +44 dBm
LOWER –5 dBm to +29 dBm -
UPPER
2
- +29 dBm to +44 dBm
N8481/2H excluding
Option CFT
AUTO (Default) –15 dBm to +17 dBm +17 dBm to +35 dBm
LOWER –15 dBm to +17 dBm -
UPPER
2
- +17 dBm to +35 dBm