For product ordering information, see pages 4-7. www.anritsu.com 233
ELECTRONIC COUNTERS, POWER METERS, VOLTMETER
4
GPIB
For Measuring Power in Quasi-Millimeter and Millimeter Wave Bands
POWER METER
ML4803A
100 kHz to 90 GHz
The ML4803A consists of an indicator, which displays the detected
electric signals as the power, and power sensors, which detect power and convert it to electric signals. Several types of power sensors
are provided for accurately measuring power in a frequency range of
100 kHz to 90 GHz. The ML4803A has various functions to meet all
power measurement requirements, from low frequency to super-high
frequency such as the millimeter waveband.
Features
•
Abundant functions
(1) Three measurement modes
The ML4803A can measure absolute values in units of “W” or “dBm”
in addition to relative values in units of “dB” or “%” . When return loss
is measured in absolute value measurement, VSWR can also be displayed.
(2) Automatic sensor sensitivity correction
The sensitivity of coaxial power sensor is corrected automatically by
a one-touch operation using the built-in calibration oscillator.
• Excellent operability and efficient measurement with memory
function
(1) The corrections required in measurements (calibration coefficient,
corrected value of attenuation or gain and reference value in relative measurements) can be easily set using the rotary encoder.
(2) Since the amount of correction for 30 points corresponding to
measured frequencies can be stored beforehand, it need not be
set each time the measured frequency changes. This function improves measurement efficiency.
(3) The amount of correction set is retained even when the power
supply is turned off.
• Three power supplies
The ML4803A can be operated on AC, DC, or batteries and can
therefore be used anywhere.
• Super-wide coaxial-type amorphous sensors
(1) Supper-wide band: 100 kHz to 32 GHz
(2) Wide dynamic range: –30 to +20 dBm
(3) Low VSWR and high response speed
(4) 75 Ω power sensor is provided
The amorphous detection element is field-replaceable.
• Diode sensor suitable for low-level and wide-band measure-
ments
(1) Wide band: 100 kHz to 26.5 GHz
(2) Low-level measurement: –70 to –20 dBm
(3) Compact and lightweight
(4) 75 Ω power sensor
• Quasi-millimeter and millimeter waves can also be measured.
The conventional waveguide-type power sensors can be used by connecting them to the ML4803A using adapter MA4002A/B.
ELECTRONIC COUNTERS, POWER METERS, VOLTMETER
234 www.anritsu.com For product ordering information, see pages 4-7.
Model
Power
supply
Specifications
•
ML4803A indicator
Frequency range
Sensor
Coaxial types
For quasi-millimeter and
millimeter waves
Display
Calibration coefficient, offset value, and
reference level setting
Power range
Range switching
Range display
Accuracy
Accuracy (at indicator)
Zero adjustment
Zero setting
Zero shift between each
range
Calibration oscillator
Averaging
RF blanking output
Recorder output
Remote-control
Memory function
AC power supply
DC power supply
External battery pack
Operating temperature
Safety
Dimensions and mass
EMC
*
1
100 kHz to 90 GHz
For high level: MA4701A, MA4703A, MA4705A, MA4601A, MA4603A
For low level: MA4702A, MA4704A, MA4602A, MA4604A
MP737A, MP738A, MP712A[ ] , MP713A[ ] (used with MA4002A Adapter)
MP714A[ ], MP715A[ ], MP716A[ ], MP717A[ ] (used with MA4002B Adapter)
W, dBm, or dB (REL) can be selected. 4-digit digital display (20% over range is equipped)
Compact analog indicator is built-in (values cannot be used.)
Calibration coefficient: 0 to 10 dB (accuracy: 0.01 dB)
Offset value: 0 to ±99.99 dB (accuracy: 0.01 dB)
Reference level: –99.99 to +99.99 dBm (accuracy: 0.01 dB)
MA4701A/4703A/4705A/4601A/4603A full-scale values: –20, –10, 0, +10, +20 dBm (10 µW to 100 mW)
MA4702A/4704A/4602A/4604A full-scale values: –60, –50, –40, –30, –20 dBm (1 nW to 10 µW)
MP series sensors full-scale values: –20, –10, 0, +10, +20 dBm (10 µW to 100 mW)
Automatic or manual (range hold) can be selected.
When manual is selected, an arbitrary range can be set unrelated to input levels.
Selected range (when range is held) is displayed on range lamps 1 to 5.
An under range or over range is also displayed.
WATT mode: ±0.5%, dBm mode: ±0.02 dBm, dB (REL) mode: ±0.02 dB
Automatically performed by pressing push-button key
MA series sensors: ±0.5% of full scale (typical value) at the highest sensitivity range (range 1)
MP series sensors: ±1.0% of full scale (typical value) at the highest sensitivity range (range 1)
MA series sensors: ±0.2% of full scale after zero set at the highest sensitivity range
MP series sensors
±0.8% of full scale: Range 2 after zero set at the highest sensitivity range
±0.5% of full scale: Range 3 to 5 after zero set at the highest sensitivity range
50 MHz calibration oscillator is built in. Output connector: N (J)
Output power: 1.00 mW (0 dBm)
Accuracy: Set to within 0.7% at factory (NIST traceable) ±1.2% worst case for one year
4 sample rates can be selected.
Low-level TTL (0 to +0.25 V) in zero set mode
High-level TTL (5 ±0.25 V) when zero set mode is cancelled
DC voltage proportional to indicated value is output (1 V in full-scale display).
Output impedance: 1 kΩ, Output connector: BNC
GPIB is standard.
Front panel functions other than the power switch can be controlled externally.
SH1, AH1, T5, L4, SR1, RL1, PP0, DC1, DT0, C0
Up to 30 frequencies, calibration coefficient, offset value, and reference level data combinations can be stored.
100 V
+10
–15
%, 50/60 Hz, <20 VA
+7 to +12 V, ≤13 VA
Continuous operation with MZ5003A Battery Pack: 5 hours
0˚ to 50˚C
213 (W) x 88 (H) x 250 (D) mm, ≤3 kg
EN61010-1: 1993 (Installation Category ΙΙ, Pollution Degree ΙΙ)
EN55011: 1991, Group 1, Class A
EN50082-1: 1992
*
1: Electromagnetic Compatibility
•
Coaxial-type power sensors
Amorphous power sensor
Frequency range
Nominal impedance
Measured power range
Maximum input power
Linearity
Input connector
Dimensions and mass
Maximum VSWR
MA4701A
10 MHz to 18 GHz
50 Ω
–30 to +20 dBm (1 µW to 100 mW)
300 mW in average
±3% in only +10 to +20 dBm range
N
34 (W) x 25 (H) x 98 (L)
mm, ≤200 g
1.4 (10 to 30 MHz)
1.18 (30 to 50 MHz)
1.1 (50 MHz to 2 GHz)
1.18 (2 to 12.4 GHz)
1.28 (12.4 to 18 GHz)
MA4703A
50 MHz to 26.5 GHz
APC-3.5
34 (W) x 25 (H) x 87 (L) mm, ≤200 g
1.15 (50 to 100 MHz)
1.10 (0.1 to 2 GHz)
1.15 (2 to 12.4 GHz)
1.20 (12.4 to 18 GHz)
1.25 (18 to 26.5 GHz)
MA4705A
50 MHz to 32 GHz
1.15 (50 to 100 MHz)
1.10 (0.1 to 2 GHz)
1.15 (2 to 12.4 GHz)
1.20 (12.4 to 18 GHz)
1.25 (18 to 26.5 GHz)
1.50 (26.5 to 32 GHz)
MA4601A
100 kHz to 5.5 GHz
N
34 (W) x 25 (H) x 98 (L) mm, ≤200 g
1.3 (100 to 300 kHz)
1.2 (0.3 to 1 MHz)
1.1 (1 MHz to 4 GHz)
1.2 (4 to 5.5 GHz)
MA4603A
100 kHz to 2 GHz
75 Ω
NC
1.4 (100 to 300 kHz)
1.15 (300 kHz to 2 GHz)
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