WILLTEK 4400 Mobile Phone Tester Series, Руководство пользователя

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Chapter 1 Overview
The front and rear panels
10
4460 GSM System Option and 4468 EDGE System Option Version 12.20
MS Power — four-pin socket. Output, providing electric power for the mobile
under test. This output is only available when the MS Power Supply and Current
Measurement Options are installed.
The cable for this connector is delivered with the MS Power Supply Option.
AF in — BNC socket. Input for AF (audio) signal. This input is only used when the
Audio option is installed.
This input can be used either as a balanced or as an unbalanced input (software
switch).
The input impedance is approx. 250 k
Ω
/20 pF.
The usable AC frequency range stretches from 30 Hz to 20 kHz.
AF out — BNC socket. Unbalanced AF (audio) signal output of the 4400. Used
only when the Audio option is installed.
Best performance is achieved on a 600
Ω
load.
The maximum output voltages are 4 V (rms) for sinusoidal signals or 11 V peak-
to-peak for all other signals.
RF in/out — RF signal input for transmitter measurements and output for
receiver measurements. It depends on the current system test whether the 4400
measures an input signal, generates an output signal or both.
HAZARD
The absolute maximum input voltage is ±40 V DC or 30 V (rms) AC . An AF
input voltage of more than ±40 V DC or 30 V (rms) AC may result in an imme-
diate destruction of the highly sensitive AF input stage of the 4400. Willtek
will not accept liability for any damage of the input stage due to overload.
HAZARD
The absolute maximum input power is 5 W (37 dBm) . An RF input power of
more than 5 W may result in an immediate destruction of the highly sensitive
RF input stage of the 4400. Willtek will not accept liability for any damage of
the input stage due to overload.
Note: There is no time limitation for applying the maximum input power.