Справочник Пользователя для HP Cell Phone Accessories E6380-90019
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Chapter 6
Configuration - Screens and Control Fields
Duplex Out
Ext Ref In
Duplex Out
This field is used to indicate losses or gains between the DUPLEX OUT
port and the device-under-test.
port and the device-under-test.
• Enter a positive value to indicate a gain (such as an amplifier gain).
The RF generator’s level is automatically set that amount below
what is indicated in the RF generator’s
what is indicated in the RF generator’s
Amplitude
field. (Example;
if this value is 10 dB, and the
Amplitude
field shows 0 dBm, the
actual level out this port is
−
10 dBm.) The value at the output of the
external amplifier should then be at the level indicated in the
Amplitude
field.
• Enter a negative value to indicate a loss (such as cable loss). The RF
generator’s level is automatically set that amount above what is
indicated in the RF generator’s
indicated in the RF generator’s
Amplitude
field to compensate. The
value at the opposite end of the cable (loss) should then be at the
level indicated in the
level indicated in the
Amplitude
field; unless the resulting RF
generator setting exceeds the maximum output level, then an error
occurs:
occurs:
Input value out of range
. In that case, reduce the
Amplitude
setting, or decrease the
Duplex Out
value.
This field is only used when the
RF Level Offset
field is set to
On
.
Screen(s) Where Field is Present
INSTRUMENT CONFIGURE
Ext Ref In
This field selects the reference frequency of the signal at the EXT REF
IN connector. You can select 1, 2, 5, or 10 MHz; 1x, 2x, 4x, 8x, or 16x
chip.
IN connector. You can select 1, 2, 5, or 10 MHz; 1x, 2x, 4x, 8x, or 16x
chip.
Operating Considerations
This signal is used as a reference for, and directly affects, these
functions:
functions:
• RF Generator Frequency (including the Tracking Generator)
• RF Frequency Counter
• AF Frequency Counter
• RF Analyzer Tune Frequency
• Spectrum Analyzer Center Frequency
• RF Frequency Counter
• AF Frequency Counter
• RF Analyzer Tune Frequency
• Spectrum Analyzer Center Frequency
AF generators 1 and 2 are not affected by the external reference; they
use their own reference.
use their own reference.
See
for more information.
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