HP 85422E, Руководство пользователя

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13 ST A TE functions control features that aect the overall
instrument state such as single sweep , instrument mode
(receiver or signal analysis), user menus , FFT measurements ,
and instrument conguration.
14 D A T A entries allow you to change the numeric value of an
active function and can be made by using the numeric keypad,
knob , or step keys .
15 RF INPUT is the signal input for the receiver RF section.
CA UTION
Excessive signal input will damage the receiver input attenuator and
input mixer . Use extreme caution when using the receiver around
high-power RF sources and transmitters . The maximum input power
the receiver can tolerate appears on the front panel and should not be
exceeded.
Excessive dc voltage can also damage the input attenuator . DO NOT
EXCEED the maximum dc voltage specied on the receiver front
panel (underneath the RF INPUT connector).
16 PROBE PO WER provides power for high-impedance ac probes
or other accessories (+15 VDC and 012.6 VDC).
17 RF OUT provides a ltered input signal for the receiver RF
section. Normally , the RF OUTPUT is connected to the receiver
RF section RF INPUT .
18 INPUT 2 is a signal input for the receiver that sweeps from
20 MHz to 2.9 GHz, from 1 GHz to 6.5 GHz (for an HP 8546A
only), or the full band (in bypass mode).
19 ALC INPUT provides a connection to the tracking generator
leveling circuitry in the receiver RF section from the RF
lter section. The receiver uses the tracking generator for
performing instrument calibration.
20 ALC provides a connection to the tracking generator leveling
circuitry in the receiver RF section from the RF lter section.
21 RF O VERLO AD LED lights up when an RF overload condition
is detected. The LED is turned o when the signal amplitude
is reduced or eliminated. This can be done by adding RF
attenuation or ltering.
22 300 MHz is the calibration signal input from the receiver RF
section.
23 300 MHz OUTPUT provides the 300 MHz calibration signal for
the RF lter section.
24 INPUT 1 is a signal input to the receiver . The frequency range
of INPUT 1 is 9 kHz to 50 MHz.
25 TRA CKING GENERA TOR is a signal input for the tracking
generator output of the receiver RF section.
26 TRA CKING GENERA TOR OUTPUT provides the built-in
tracking generator output from the receiver RF section.
Getting Started 1-5