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The ML2430A Series Power Meters combine the advantages of thermal meter accuracy, diode meter speed and peak power meter display graphics. The result is a single instrument that samples at more
than 35k per second and achieves 90 dB dynamic range with a single sensor.
The ML2430A Series includes graphics display capability as a standard feature. The ruggedized housing and optional high-capacity
NiMH battery bring laboratory quality accuracy to field service applications.
Performance
• Speed and dynamic range
The 90 dB range MA2470A Series Power Sensors’ high sensitivity
reaches stable power readings to -70 dBm. 35 kHz sample rates profile cellular, PCS and other pulsed signals to 0.1 µsec resolution.
Modern connector technology achieves industry leading return loss
for improved accuracy through 50 GHz. The 87 dB range MA2440A
Series High Accuracy Sensors further improve return loss performance by adding a matching circuit to the MA2470A Series’ front
end.
• Fast thermal sensors
Anritsu’s latest semiconductor processing technology produces thermal power sensors with speed increased by an order of magnitude.
Improvements in connector technology reduce measurement mismatch uncertainty through 50 GHz to levels previously attained only
to 20 GHz. The fabrication technique as well as the ML2430A ’ s sampling and DSP technology optimize measuring speed to 4 ms rise
and fall times.
• GPIB speed
Industry leading speed is achieved under a variety of operating conditions including averaging settings, sensor control settings, triggering conditions, operating mode, sensor type, and GPIB interface
manufacturer. The ML2430A series offers the ability to measure and
transfer a high speed burst of 200 data points using profile operating
mode with sampling rates of 35k per second.
• GPIB emulation
With 99.9% emulation of older meters, the ML2430A series improves
ATE system productivity. Typical test system speed improvement is
2 to 10 times faster system speed depending upon the number of
measurements taken during the test, the minimal use of wait statements within the code, and the meter model emulated.
• Triggering controls
What use is high speed without triggering and sample controls?
Data acquisition event arming and triggering functions traditionally
found on expensive peak power meters are standard in the
ML2430A series. Triggering delay and the sample integration time
per reading can be directly controlled by the operator. Trigger
sources include, continuous, internal, external TTL, and manual.
Thus, data acquisition can be optimally controlled for synchronization with other test equipment.
• Burst profile graphics display
The ML2430A features random repetitive sampling for high resolution of fast signals. A time domain graphic display profiles pulsed signals over a power range of –40 dBm to +20 dBm. 35 kHz sampling
speed produces clear power profiles of cellular and PCS signals including TDMA, PHS, GSM, and DCS-1800. Pulse top power is easily
and repeatably measured using between cursor averaging. Measure
pulse-top power over >80 dB dynamic range in readout mode at
POWER MET ERS
ML2430A series
GPIB
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New power sensor technology achieves industry leading
measurement linearity and high sensitivity.
GPIB speeds >200 readings per second.
• Power vs. time graphics display
One of the most common power meter ATE program types is a plot
of RF power versus some stimulus. The power versus time mode is
a strip chart style display for monitoring gain and output power variations over time/temperature, supply voltage or a component tolerance. In service applications, power versus time mode speeds trouble shooting of unusual conditions such as intermittent switches or
abnormal power control in a mobile telephone. The power versus
time mode provides a clear strip chart display of RF power variation.
• Parallel printer connector
Many deskjet series printers can be connected directly to the
ML2430A for fast documentation of performance on the bench or in
the field. Meter calibration, triggering and averaging settings are listed with the display printout. Thus, evidence of DUT (device under
test) anomalies can be duplicated quickly, allowing engineers to fix
problems with minimal time investment.
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• 90 dB dynamic range
Typical communications industry ATE systems operate over a 60 to
80 dB dynamic range. The MA2470A series’ 90 dB dynamic range
replaces two 50 dB sensors. Further an RF switch is no longer needed for the two sensors. This reduces software control complexity and
further speeds test execution.
• Sensor EEPROM
All MA2400A series sensors are equipped with internal EEPROMs
for storage of calibration factor data vs. frequency. This allows the
power meter to interpolate and correct readings automatically, improving accuracy and convenience.
• High reliability
Rugged poly-carbonate chassis design handles drop shocks and
rough field treatment. No vent holes are present, thus the meter is
splash resistant. A front cover panel and softcase are optional for further environmental protection. Power sensors are also ruggedized
for rough handling.
• Improved accuracy
Mismatch uncertainty is typically the largest source of error. The
MA2400A series Power Sensors offer a typical 5 to 6 dB improvement in sensor return loss, typically cutting mismatch uncertainty in
half. The MA2440A series High Accuracy Sensors incorporate a
matching pad which further improves return loss by 5 to 6 dB - again
halving mismatch uncertainty.
Specifications
Frequency range
*
1
10 MHz to 110 GHz
Power sensors Meter specifications apply to MA2400A series Power Sensors. Compatible with Anritsu MA and MP series sensors.
MA2420A series Fast Thermal Sensors: 50 dB
Sensor dynamic range MA2440A series High Accuracy Power Sensors: 87 dB CW, 57 dB Peak
MA2470A series Power Sensors: 90 dB CW, 60 dB Peak
Power measurement range –70 to +47 dBm (0.1 nW to 50 W), sensor/attenuator dependent. Use couplers for higher power levels.
Voltage measurement range 0.00 to 20.00 V, nominal
Display range –99.999 to +99.999 dB
Display resolution
Selectable from 0.1 dB 0.001 dB limited to 0.01 dB in graphical display modes; Linear power units, 3 to 6 digit,
1 - 3 digits selectable to right of decimal nW - W; Voltage, 1 - 2 digits selectable to right of decimal.
Offset range –99.999 to +99.999 dB. Fixed value or frequency dependent table.
Display units dBm, dB, dBr, dBmV, dBVr, W, %, Volts
Instrumentation accuracy <0.5%
Zero set and drift
<0.5% MA2420A; <0.5% MA2470A series and MA2440A series. Percent of full scale in most sensitive range,
measured over one hour with maximum averaging after one hour warm up at constant temperature.
Noise
<0.5% of full scale in most sensitive range, measured over a one minute interval with maximum averaging, two
standard deviations at constant temperature after one hour warm up, typical. MA2470A series, 20 pW typical.
Frequency: 50 MHz nominal
Output level: 1.00 mW, ±1.2%/year, ±0.9% RSS, NIST Traceable
1.00 mW power reference Maximum input: +20 dBm continuous or peak, ±50 V dc
VSWR: <1.04
Connector: Type N precision female
Readout, dual channel. RF power or voltage.
Operating modes Power versus time: Single channel graphic of readout data over adjustable time interval. RF power or voltage
Profile: Single channel RF peak power graphic display for analysis of repetitive pulse or transient waveforms
Range hold Current range or selectable 1 through 5.
Auto-averaging: Moving average increases averaging at low power ranges.
Averaging types: Auto, Manual (Moving, Repeat)
Averaging Manual average range: 1, 2, 4, ..., 512
Low-level averaging: Low, Medium, and High settings apply post-average low pass filter to improve visibility at high
display resolution settings.
Limit lines
Variable high and low limits with audible, rear panel TTL output, and/or visible Pass/Fail alarm indication. Failure
indication can be set to latch until cleared so that a transient failure can be easily noticed.
Two manually adjustable cursors with power, delta cursor power, between cursor power average, and delta time
Cursors readout display.
Delta t resolution: 0.5% of display period or 100 ns
Trigger sources Internal, External TTL, GPIB, Manual, Continuous
Delay range 0.0 to 1000.0 Milliseconds
Delay resolution 0.5% of display period or 100 ns
Internal trigger range –25.0 to +20.0 dBm MA2470A series Sensors.
Internal trigger level accuracy 1.0 dB, typical
External trigger range TTL rising or falling edge trigger. BNC input
Manual trigger Front panel softkey
Continued on next page
Sensor/channel controlTriggering
• Offset table for path loss correction
Compensating for the true frequency response of attenuators, couplers, cables, switches and other test setup devices improves measurement accuracy. For this reason, the ML2430A series can apply
an offset table of attenuation-versus-frequency in addition to the traditional fixed dB offset capability. When a power sensor connection
is preceded with a new 1N series wideband power limiter, the offset
table compensates for frequency response. Thus, the combination
achieves an accurate, “burnout-proof” sensor.
• Softkey menu control
Softkey menus simplify instrument control by making the user interface easier to understand. The numerical keypad simplifies the operator interface.
• Battery
The optional NiMH “Smart” battery supports high charge density for
a typical 8 hour day of operation. Accurate fuel gauging, <2 hour fast
charge cycling, and the elimination of NiCd style memory effect further enhances the convenience of this battery technology.
• Voltmeter
The ML2430A series also supports high speed voltage measurement. A rear panel BNC measures voltage or operates as V/GHz input supporting automated sensor calibration factor correction.
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Display
LCD graphic display with dual channel readout mode and dual peak meters. Backlight and adjustable contrast standard.
Offset table memory: Five 200 point storage locations of power level and frequency pairs. A table can be subtracted
from measurements and recalled for parallel printer output or download to controller.
Save/Recall
Setup memory: 10 storage registers plus RESET default settings
Offset table record length: 200 points maximum.
Secure mode Erases memory information upon power ON. Default condition is secure mode OFF.
Operating modes
Voltage: Display voltage reading on selected channel
Cal factor Voltage proportional to frequency for sensor calibration factor compensation
voltage input Blanking input: TTL levels only. Selectable positive or negative polarity.
(BNC) Input range: 0 to 20 V
Resolution: 0.5 mV
Control: Adjustable voltage to frequency relationship
Operating modes
Analog out: Selectable channel adjusted for calibration factors and other power reading correction settings.
Pass/Fail: Selectable TTL High or Low
Channel output: Uncalibrated, real time analog.
AC modulation output: Output 1 only.
Dwell output: Output 2 only
Output range: –5.0 to 5.0 V
Resolution: 0.1 mV
Trigger input Operating modes: External TTL or RF Blanking.
GPIB IEEE-488.2 and IEC-625
interface Implements: AH1, SH1, T6, LE0, SR1, RL1, PP0, DC1, DT1, C0 and E1
RS-232 Supports software download and remote monitoring.
Parallel Compatible with Deskjet 540 and 310 models. Other 500 series and 300 series and later are typically compatible.
printer output See manual for DIP switch settings.
General MIL-T28800E, Type 3, class 5, Style E
Display Flat panel monochrome LCD graphic with backlight
Operating temperature range 0.0 to +50°C.
Storage temperature range –40 to +95˚C
Moisture Splash and rain resistant, 95% humidity non-condensing.
AC: 90 to 250 Vac, 47 to 440 Hz, 40 VA maximum
Power requirements DC: 12 to 24 Vdc, Reverse protected to –40. Maximum input 30 V.
Battery: >6 hr usable with 3000 mAhr battery
Replaceable battery (Option) 3000 mAhr NI-Mh (DR-36 series)
EMI Complies with EN 55011 GRP1: 1991 CLASS A; 50082-1: 1992
Warranty 1 year, additional available
Dimensions 8.39 inches (213 mm) wide, 3.46 inches (88 mm) high, 9.84 inches (250 mm) deep
Mass <6.6 Ibs (<3 kg)
Operation and programming manual
Accessories furnished Sensor cable 1.5 m: One per input
Power cord mains plug matches destination requirements.
Analog output
(BNC): two
outputs
configurable
to log or lin
Rear panel
inputs/
outputs
System configurationGeneral specifications
*
1: Sensor dependent
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