Atten AT5000 Panduan Petunjuk Pengoperasian - Halaman 10
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(two signals >3MHz apart)
Sensitivity: Better than -90dBm
Log scale fidelity: 2dB(without attn.)
Ref: 250MHz
Input attenuator: 0 to 40dB (4 10dB steps)
Input attenuator accuracy: 1dB/10dB step
Max. input level: +10dBm, 25VDC (0dB
attenuation) +20dBm (40dB attenuation)
Frequency scan width: 100KHz/div. to 100MHz
/div.in 1-2-5 steps and 0Hz/div. (Zero Scan)
Tracking Generator
Output Frequency: 0.15 MHz to 1050 MHz
Output attenuator: 0 to 40dB (4 10dB steps)
Output attenuator accuracy: 1dB
Frequency response: 1.5dB
Output impedance: 50
(BNC)
Radio Frequency Interference(RFI): <20dBc
Output level range: -50dBm to +1dBm
(in 10dB steps and var.)
General Specifications
Display: 6 inch, 8 10 division graticule
Trace rotation: adjustment from front panel
Power: 220V
10%, 50Hz to 60Hz
Power consumption: approx. 20W
Operation Ambient: 0
to +40
Safety: Grade I (IEC 1010-1)
Weight: approx. 7kg
Dimensions: 380 285 125 (L W H) mm
Input impedance: 50
Socket: BNC
Load resistance: > 8
AM/FM demodulation output
Near Field Sniffer Probes AZ530
(Optional)
The AZ530 is the ideal toolkit for the investigation
of RF electromagnetic fields. Lt is indispensable of
EMI pre-compliance testing during product
development, prior to third party testing. The set
includes 3 hand-held probes with a built-in
pre-amplifier covering the frequency range from
100KHz to over 1000MHz.
The probes-ove magnetic field probe, one electric
field probe, and one high impedance probe are all
matched to the 50
inputs of Spectrum analyzers
or RF-receivers. The power can be supplied either
from batteries, Ni-Cads or through a power cord
directly connected to an AT5010/AT5011 series
spectrum analyzer.
Signal feedis via a 1.5m BNC-cable. When used in
conjuction with a spectrum analyzer or measuring
receiver, the probes canbe used to locate and qualify
EMI sources, as well as evaluate EMC problems at
the breadboard and prototype level. They enable the
user to evaluate radiated fields and perform shield
effectiveness comparisons. Mechanical screening
performance and immunity tests on cables and
components are easily performed.
Specifications
Frequency range: 0.1MHz to 1000MHz
(lower frequency limit depends on probe type)
Output impedance: 50
Output connector: BNC
Input capacitance: 2pF (high imped Probe)
Max. lnput Level: +10dBm
(without destruction)
1dB-compression point: -2dBm
(frequency range dependent)
DC-input voltage: 20V max
Supply Voltage: 6V DC, 4AA size batteries,
Supply-power of Analyzer
Supply Current: 8mA (H-Field Probe),
5mA (E-Fieldprobe), 24mA (High imp probe)
Probe Dimensions: 195 40 19 (L W H)mm
Housing: Plastic (electrically shielded internally)
The H-Field Near-Field probe
The H-Field probe provides a voltage
to the connected measurement system which is
proportionalto the
magnetic radio
frequency (RF) field
strength existing at the
probe location, With this
AZ530-M
probe, circuit RF sources
may be localized in close proximity of each other.
The H-Field will decrease as the cube of the
distance from the source, A doubling of the distance
will reduce the H-field by a factor of eight (H=1/d ).
where d is the distance.
In the actual use of the H-field sensor one observes
therefore a rapid increase of the probe's output
voltage as the interference source is approached.
While investigating a circuit board, the sources are
immediately obvious. It is easily noticed which
compo-nent (i.e.IC)causes interference and which
does not. In addition.by use of a spectrum analyzer
the maximum a mplitued as a function of frequency
is easily identified. Therefore, one can eliminate
early in the development components which are not
suitable for EMC purposes. The effectiveness of
countermeasures can be judged easily. One can
investingate shields for "leaking" areas and cables
or wires for conducted interference.
The E-Field Monopole Probe
The E-field monopole probe has the highest
sensitivity of the three probes. It is sensitive enough
to be used as an
antenna for radio
or TV reception.
With this probe the
entire radiation from
a circuit or an equipment
can be measured.
It is used, for example, for example, to determine
the effectiveness of shielding measures. With this
probe, the entire effectiveness of filters can be
measured by measuring the RFI which is conducted
along cables that leave the equipment and may
influence the total radiation. In addition, the E-field
probe may be used to perform relative
measurements for certification tests. This makes it
possible to apply remedial suppression measures so
that any re-qualification results will be positive. In
addition, pre-testing for certification tests may be
performed so that no surprises are encountered
during the certification tests.
The High-Impedance probe
The High-impedance probe (Hi-Z) permits the
determination of the radio frequency interference
(RFI) on individual contacts or printed circuit traces.
It is a direct-contact probe. The probe is of very
high impedance (near the insulation resistance of
the printed circuit
material) and is
loading the test
3
point with only
2pF (80
at 1GHz).
Thereby one can
measure directly in a
circuit without significantly influencing the
relationships in the circuit with the probe. One can,
for example, measure the quantitative effectiveness
of filters or other or other blocking measures.
Individual pins of ICs can be identified. With this
Hi-Z probe individual test points of a circuit can be
connected to the 50W impedance of spectrum
analyzer.
Frequency Expander AT5000F Series
Since the prices of 3GHz spectrum analyzers are all
above several ten thousands RMB, it is not
affordable for most radio fans, service men and
even medium or small sized enterprises. Meantime,
there are many signals above 1000MHz in
communication field, such as LO(local oscillator)
signals of mobile phone usually between 1GHz to
2GHz, some are exceed 2GHz, and 1800MHz,
AZ530-E
2400MHz or more. Based on above situations,
favorable frequency expanders have been developed
by Shenzhen ATTEN Electronics Co., Ltd.
AT5000F1 operating accompany with AT5000
series spectrum analyzer of 1000MHz, frequency
can be expanded to 1050MHz to 2050MHz.
Example: connect AT5000F1 to AT5010
spectrum analyzer, if a 800MHz signal display in
spectrum analyzer, then the tested signal should
be added 100MHz, so the frequency of tested
signal must be 1800MHz.
Frequency of AT5000F2 can be expanded to
2050MHz to 3050MHz, the tested frequency is
the display frequency add 2000MHz.
Frequency of AT5000F3 can be expanded to
3050MHz to 4050MHz, the tested frequency is
the display frequency add 3000MHz.
AT808 GSM Servicing RF Signal Generator
AT 808 Mobile Phone Signal Generator analogs RF
signals of receiving frequency range for mobile
phones. The unit is mainly used in maintaining
failures of mobile receiver, it is regarded as the
spectrum analyzer's best partner.
AZ530-H
Functions
Since the phone's receiving signals transmit by base
(Optional)
(Optional)