Anritsu ML2437A Single-Input CW Power Meter (ML2430A Series)

Single-input ML2430A series CW power meter with graphics display, 90 dB dynamic range with a single sensor and optional NiMH battery.

Display: Monochrome LCD, with backlight and adjustable contrast
Display Resolution in Readout Mode: 0.1 dB to 0.001 dB; Linear power units, 3 to 6 digits, 1 to 3 digits selectable to right of decimal, nW to W; Voltage, 1 to 2 digits selectable to right of decimal
Display Resolution in Profile Mode: 0.01 dB
Time Measurement Resolution: 200 pixels display resolution

Datasheet

Overview

The Anritsu ML2437A is the single-input model of the ML2430A series of power meters, which are designed for CW applications. It combines thermal meter accuracy, diode meter speed and peak power meter display graphics in one instrument that samples at more than 35K per second and achieves 90 dB dynamic range with a single sensor.

A graphics display is a standard feature. The meter can show a time-domain profile of pulsed signals or a strip-chart style power versus time display of pulsed power or TDMA signals, and frame triggering allows the average power across a time slot to be measured.

The ruggedized polycarbonate housing is portable and splash resistant, and an optional high-capacity NiMH battery supports field service use. A rear panel BNC input measures voltage or accepts a V/GHz signal for automated sensor calibration factor correction.

Remote operation and software

The meter is controlled over GPIB or RS232 and emulates older meters, including the Anritsu ML4803 and Agilent 436, 437 and 438. In profile mode it can measure and transfer a burst of 200 data points. PowerSuite, free software for the ML2430A series, displays measurement traces on a PC in real time and archives data and plots for later analysis.

Key Features

Graphics display capability included as standard
90 dB dynamic range with a single sensor
Portable, rugged and splash-resistant polycarbonate chassis
Optional NiMH battery providing six hours of continuous operation
Profile operating mode measures and transfers a high-speed burst of 200 data points
99.9% emulation of older meters for ATE systems
Typical test system speed improvement of 2 to 10 times
Operator control of triggering delay and sample integration time per reading
Trigger sources include continuous, internal, external TTL and manual
Burst profile display of pulsed signals over a power range of –40 dBm to +20 dBm
Pulse-top power measurement using between-cursor averaging
Power versus time strip-chart display of pulsed power or TDMA signals
Frame triggering to measure average power across a time slot
Rear panel BNC voltage input for voltage measurement or V/GHz calibration factor correction
Softkey menu control with numerical keypad
Secure mode that wipes non-volatile memory on power up
Remote monitoring with modem dial-out when a limit threshold is exceeded

Specifications

Display and Measurement

Display	Monochrome LCD, with backlight and adjustable contrast
Display Resolution in Readout Mode	0.1 dB to 0.001 dB; Linear power units, 3 to 6 digits, 1 to 3 digits selectable to right of decimal, nW to W; Voltage, 1 to 2 digits selectable to right of decimal
Display Resolution in Profile Mode	0.01 dB
Time Measurement Resolution	200 pixels display resolution Profile and P vs. T modes; for a 1 ms Profile window, cursor resolution on the display is 5 µs
Measurement Hold	Hold, Max, Min
Measurements	Average, Min, Max
Voltage Measurement Range	0.00 to 20.00 V nominal
Display Units	Watt, %, Volts, dBm, dB, dBµV, dBmV, dBr
Display Range	–199.99 dB to +199.99 dB
Measurement Gates	1
Markers	2
Limit Lines	Fixed value high and low limits with audible, rear panel TTL output, and/or visible Pass/Fail alarm indication Failure indication can latch for transient failure detection
Offset Range	–199.99 dB to +199.99 dB Fixed value or frequency dependent table
Measurement Display Readout (Numerical)	2
Measurement Display Profile (Graph)	Power vs. Time graphic of readout data or Profile of Peak power for analysis of repetitive pulse or transient waveforms
Source Sweep	Single channel power sweep or frequency sweep
Peaking Meter	± 5 dB range CW (Readout mode) only
Amplifier Range	Dynamic range covered by five overlapping amplifier ranges: R1, R2, R3, R4, and R5 Universal Sensor MA2481/82D ranges 1 to 6
Range Hold	Auto or Manual (current range or selectable 1 through 5)

Performance

Number of Input Signals ML2437A	1
Frequency Range	100 kHz to 50 GHz (sensor dependent) The product page summary lists 100 kHz — 65 GHz; datasheet value shown
Dynamic Range (Continuous or Peak)	–70 to +20 dBm Dependent on sensor, external coupler, or attenuator
Nominal Video BW	100 kHz Profile mode
Sampling Rate	31.25 kS/s Product page states sampling at more than 35K per second; datasheet value shown
Instrumentation Accuracy, CW Mode	< 0.5% (± 0.02 dB absolute Accuracy, ± 0.04 dB Relative Accuracy)
Instrumentation Accuracy, Pulse/Modulated Mode	< 0.8% Nominal range 7, 8
Averaging Type	Auto (Moving), Manual (Moving, Repeat)
Averaging Range	1 to 512
Low-level Averaging	Low, Medium, and High settings Apply post average low-pass filter to improve visibility at high display resolution

Triggering

Trigger Source	Internal, External (TTL or RF Blanking), GPIB, Manual, or Continuous
Trigger Modes	Manual: single power value set to cover entire measurement dynamic range of sensor; Auto: automatically sets trigger level for signal over measurement dynamic range
Internal Trigger Dynamic Range	–15 dBm to +20 dBm All diode sensors, selectable to –25 dBm
Internal Trigger Level Accuracy	1 dB Typical
Internal Trigger Settable Resolution	0.1 dB
Trigger Delay Range	0 ms to 999 ms
External Trigger Range	TTL rising or falling edge (BNC input)
Trigger Delay Settable Resolution	0.5% of display period or 100 ns
Trigger/Display Capture Range	Profile mode: 10 ms to 7 s; P v T mode: 1 m to 24 hrs
Trigger Point Display	On-screen indicator/message

Reference Calibrator

Reference Calibrator Power	1 mW
Power Accuracy	± 1.2% per year Traceable to National Standards
Frequency	50 MHz (nominal)
Frequency Accuracy	< 1%
VSWR	< 1.12
Connector Type	N female
Impedance	Nominal input impedance is 50 ohms

Interfaces

Save/Recall	10 storage registers plus RESET default settings
Secure Mode	Wipes non-volatile memory on power up when active
Remote Monitoring	Yes
Modem Compatibility	Yes
GPIB (IEEE–488.2, IEC–625)	> 600 readings/second (per input channel)
GPIB Emulation	Emulation of Anritsu ML4803, Agilent 436, 437, and 438
Parallel Printer Port	Compatible with Deskjet 540 and 340 Models (other 500 Series and 300 Series and later are typically compatible). Canon BJC 80.
RS232	Supports software download, instrument control, and modem dial-out 1200, 2400, 4800, 9600, 19200, 38400, 57600 Baud rates are supported
Cal Factor Voltage Input (BNC)	Input Range: 0 V to 20 V; Resolution: 0.5 mV Display voltage reading on selected channel or voltage proportional to frequency for sensor calibration factor compensation; Blanking Input TTL levels only, selectable polarity
External Trigger (BNC)	TTL, maximum frequency of 800 kHz
Analog Output (BNC)	Two outputs configurable to Log or Lin; Output Range: –5.0 V to +5.0 V; Resolution: 0.1 mV Modes: corrected channel reading, Pass/Fail TTL, near real time uncalibrated channel output, AC modulation output (Output 1 only), dwell output (Output 2 only)

Power

Non-Volatile RAM Battery	Lithium (10 year life)
Battery Option	> 6 hr usable with 3000 mAhr (NiMH) battery
DC Power Requirements	12 to 24 VDC, Reverse protected to –40 V Maximum input 30 V
AC Power Requirements	85 VAC to 240 VAC, 47 Hz to 400 Hz, 40 VA Maximum No AC mains connection to measurement circuits. Quick Fact Sheet lists 90 to 250 VAC, 47 to 440 Hz; datasheet value shown

Environmental

Operating Temperature	0 °C to 40 °C Quick Fact Sheet lists 0° to 50 °C; datasheet value shown
Operating Elevation	4,600 m Per W31P4Q-18-007
Environment	For indoor use only, Pollution Degree 2
Storage Temperature	–40 °C to 70 °C
Moisture	Splash and rain resistant, 95% humidity non-condensing
Military Compliance	MIL-T-28800F, class 3

Physical

Dimensions	223 mm x 150 mm x 390 mm Quick Fact Sheet lists 213 mm W x 88 mm H x 390 mm D; datasheet value shown
Weight	3 kg Excluding battery option
Grounding Post	Used as safety ground when operating from DC or battery power
Warranty	Power meters have a standard 1 year warranty Quick Fact Sheet states 3-year standard for all Power Meters; datasheet value shown

Regulatory Compliance

European Union EMC	2014/30/EU, EN 61326-1:2013 CISPR 11/EN 55011, IEC/EN 61000-4-2/3/4/5/6/8/11
Low Voltage Directive	2014/35/EU
Safety	EN 61010-1:2010
RoHS Directive	2011/65/EU & 2015/863
Australia and New Zealand	RCM AS/NZS 4417:2012
South Korea	KCC-REM-A21+-0004
Canada	ICES-1(A)/NMB-1(A)

Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.

Applications

CW power measurement
Field service
Automated test equipment (ATE) systems
Cellular and PCS burst power profiling (TDMA, PHS, GSM, DCS-1800)
Mobile telephone power control troubleshooting
Remote power monitoring

Included

Power cord for destination country
One 1.5 m sensor cord per meter input
Certificate of Calibration
PowerSuite software
Operation Manual (soft copy)
Programming Manual (soft copy)

Options & Accessories

Option	Description
ML2400A-05	Front Bail Handle
ML2400A-06	Rear Mount Input A on ML2437A — Options 6, 7, 8 and 9 are mutually exclusive for any given ML2430A unit
ML2400A-07	Rear Input A and Reference on ML2437A — Options 6, 7, 8 and 9 are mutually exclusive for any given ML2430A unit
ML2400A-98	Calibration to ISO 17025 and/or ANSI/NCSL Z540
ML2400A-99	Premium Calibration
2000-1603	NiMH Battery
2000-996-R	Desktop Battery Charger with Power Supply
2000-1534-R	Desktop Battery Charger (for use in Japan only)
2000-1545	Bulkhead Adapter
10585-00001	Hard Copy Operation and Programming Manuals
10585-00003	Hard Copy Maintenance Manual
D41310	Soft Carry Case with Shoulder Strap
760-209	Hardside Transit Case
2000-1535	Front Panel Cover
2400-82	Rack Mount, Single Unit — Options 5, 2400-82, and 2400-83 are mutually exclusive
2400-83	Rack Mount, Side-by-Side — Options 5, 2400-82, and 2400-83 are mutually exclusive
2000-1536-R	0.3 m Sensor Cable
2000-1537-R	1.5 m Sensor Cable — Standard sensor cable; peak and pulse sensor performance is specified with this cable
2000-1538-R	3 m Sensor Cable
2000-1539-R	5 m Sensor Cable
2000-1540-R	10 m Sensor Cable
2000-1541-R	30 m Sensor Cable
2000-1542-R	50 m Sensor Cable
2000-1543-R	100 m Sensor Cable
2000-1544	RS-232 Bootload Cable