HP Cell Phone Accessories E6380-90019 Manual Do Utilizador
136
Chapter 5
Analog Measurements - Screens and Control Fields
Input Gain
Input Port
Input Gain
This field displays and selects the gain of the AF analyzer’s input
amplifier. The choices are 0 dB, 20 dB, or 40 dB. Refer to the
amplifier. The choices are 0 dB, 20 dB, or 40 dB. Refer to the
Gain
Cntl
field more information.
Screens on which this field is displayed
AF ANALZYER
Input Port
This field selects the RF IN/OUT or ANT IN port for making RF
measurements. The RF IN/OUT port must be used for making TX
power measurements.
measurements. The RF IN/OUT port must be used for making TX
power measurements.
Operating Considerations
If the RF power at the RF IN/OUT port exceeds allowable limits, a loud
warning signal sounds and a message appears at the top of the screen.
If this occurs, disconnect the RF power, reset using
warning signal sounds and a message appears at the top of the screen.
If this occurs, disconnect the RF power, reset using
Meas Reset
(press and
release the
Shift
key, then the
Hold
key), and allow the Test Set to cool off
for approximately two minutes before making any other measurements
on this port.
on this port.
The ANT IN (antenna input) connector provides a highly-sensitive
input for very low level signals (such as “off the air” measurements).
You cannot measure TX (RF) power on the RF ANALYZER screen
using the ANT IN port.
input for very low level signals (such as “off the air” measurements).
You cannot measure TX (RF) power on the RF ANALYZER screen
using the ANT IN port.
CAUTION
Connecting a signal of >60 mW to the ANT IN port can
cause instrument damage (although internal protection
circuits can typically withstand a short-duration signal of
several Watts).
cause instrument damage (although internal protection
circuits can typically withstand a short-duration signal of
several Watts).
If the overpower circuit is triggered (signified by a
warning message at the top of the screen), remove the
signal from the ANT IN port, and reset using
warning message at the top of the screen), remove the
signal from the ANT IN port, and reset using
Meas Reset
(press and release the
Shift
key, then the
Hold
key) or turn
the Test Set off and on.
Maximum signal levels at the RF IN/OUT, DUPLEX OUT,
and ANT IN ports are printed on the connector panel.
Exceeding these levels can cause permanent instrument
damage.
and ANT IN ports are printed on the connector panel.
Exceeding these levels can cause permanent instrument
damage.
Screens on which this field is displayed
SPEC ANL: RF IN/ANT main controls menu
RF ANALYZER
RF ANALYZER
Main Menu