Ceyear 3943B, Руководство по эксплуатации

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8 Technical indicators and testing methods
8.1 Statement
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8 Technical indicators and testing methods
This chapter describes the technical specifications and main test methods of the 3943B monitoring
receiver.
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S t a t e m e n t
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P roduct Features
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Technical indicators
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Additional information
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Performance characterization testing
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8.1 Statement
Unless otherwise stated, all index test conditions are: Temperature range is: 23°C ± 5°C after half an
hour of power on. The additional instrument information is to facilitate users to understand more clearly
the instrument performance that is not contained in the technical indicator range. Key word descriptions
are shown below:
Technical specifications (spec): Unless otherwise stated, performance is guaranteed for calibrated
instruments after a minimum of two hours in the operating temperature range of 0 to 40°C, followed by a
30-minute warm-up; this includes errors in measurement. All data in the document are technical
specifications, unless otherwise specified.
Typical value (Typ): It indicates 80% of the instruments can reach typical performance, which is not a
guarantee, and excludes uncertainty factors during the measurement. It is valid only at the room
temperature (about 25°C).
Nominal value (nom): It indicates such performances as the expected average performance, designed
performance features or those that
cannot be tested by limited means, for example, the 50 Ω connector.
The measured values are not guaranteed data and are measured at room temperature (approx. 25°C).
Measured value (meas): It indicates the performance feature measured during the design phase for
comparing with the expected performance, for example, amplitude drifting change with time. This data
is not guaranteed and is measured at room temperature (approx. 25°C).
8.2 Product features
Table 8.1 Product features
General Technical Indicators
Temperature range
Working time: 0 ~ +50
℃
Storage time:
–40 ~ +70
℃
Elevation 4,600 meters
Electromagnetic
compatibility
Meet the following requirements as specified in GJB 3947A-2009, 3.9.1:
a)Harassment from power supply: in accordance with the provisions of GB
4842-2004, in which the frequency of 150 kHz ~ 30 MHz, in line with the
requirements of the voltage limit of Group 1 Class B equipment.
b) RF field induction conducted harassment immunity: in accordance with the
provisions of GB/T 17626.6-1998, where the test level is 2, the effective value
of 3V, frequency 150kHz ~ 80MHz, 1kHz sine wave 80% modulation
magnitude.
c) Electrical fast transient pulse group immunity: according to GB/T
17626.4-1998, where the test level is 3, 2kV peak for AC line, 1kV for signal,
control and DC lines, rise time T
r
=5ns, hold time T
h
=50ns, repetition
frequency (5~100) kHz.
d) Electromagnetic radiation harassment: in accordance with the provisions of
GB 4842-2004, the frequency of 30MHz ~ 1000MHz, in line with the
requirements of the limit value of electromagnetic radiation harassment of