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ML2490A Series
Peak Power Meters
● 65 MHz Bandwidth Mainframe
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ML2490A Series Peak Power Meter
Higher Resolution Rise Time Measurements
● 1ns Settable display resolution
● Suitable for Radar Rising Edge signals
● 50MHz/1GHz
calibrator calibrates
all Anritsu sensors
● Internal or External
trigger facilities
● CW Meter Mode
High Dynamic
Range accurate CW
measurements
● Sensor Inputs
Compatible with
all Anritsu
MA2400A sensors
● Fast Rise Time Sensors
Optimised for Fast Rise Time High Video
bandwidth measurements
MA2411B 40 GHz 8ns Rise Time
MA2490A/91A 8GHz/18GHz 18ns Rise Time
Sensors
● Sensor EEPROM
All MA2400 Series sensors have built-in
EEPROMS with factory calibration data.
Up to 9 User Calibration Factor Tables allow
on-site calibration, extra frequency points or
compensation for attenuators and couplers
● Preset key for common
measurement set ups
● Colour Graphical Display
Displays Peak, average and
crest of any signal
● 50ns to 7s
display range
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● High resolution rising Edge measurements
The ML2490A is the ideal companion for other Anritsu Test
equipment such as the MG3690B series and the MG3700A series
● Rear panel options for Sensor Inputs and 0dBm Reference
● RS232 for control & firmware updates
● TTL outputs for Pass Fail Limits
● GPIB Comprehensive Command set
for full functionality over GPIB
● TTL Trigger Control PRF (Pulse
Repetition Frequency) to 10MHz
● V/GHz input for Cal factor
correction or PAE(Power Added
Efficiency) current Probe
● External Video Provides 1/4VGA signal to CRT Monitor
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Features
● 1ns Settable Display Resolution
The ML2490A has 1ns settable resolution on time based
measurements from 50ns to 3.2 µs.
● 50ns minimum time display
See and measure the detail on narrow pulse width signals.
● 8ns typical Rise time with MA2411B sensor
The ML2490A rise time is typically 8ns with the MA2411B
pulse sensor providing a fast measurement on the most
demanding of radar signals.
● 65MHz Bandwidth
The power meter mainframe has 65MHz bandwidth.
Wide enough for accurate rise time measurements on
radar signals or for measuring the peak signal of the latest 4G OFDM signals.
● Two Sample modes
For time durations up to 3.2 µs, the ML2490A series samples continuously. This can be set either automatically or the
sample rate can be adjusted directly by the user.
For time durations of 50ns to 3.2µ s the power meter uses repetitive sampling to build up the trace to 1ns settable
display resolution. Changeover between the two modes is automatic.
● External Video Connector
The ML2490A has a video connector on the rear panel as standard. The power meter can be connected to a standard
CRT VGA monitor. The power meter can be located remotely in a test rack and the video screen located close to
where the adjustments are taking place.
● 50MHz and 1GHz Calibration signals
The ML2490A has 50MHz and 1GHz calibrators as standard. Frequency is automatically selected for the sensor
in use.
● Dual Display Channel
The ML2490A supports dual display channels. Each display channel is a measurement set up and can use any
selection or combination of the sensor inputs. The instrument can be configured to view one display channel or two.
It can be switched between display channels quickly and simply via the Ch1/Ch2 Hard 'hot' key on the front panel.
The user can also choose to view the measurement results as a graph profile or numerical readout.
● Measurement Gates
At the heart of the power meter's signal processing lies the measurement gate facility. The new power meter supports
up to 4 independently set gates or 8 gates repeated in a pattern. The gate allows the user to capture the relevant
information from the signal under test. The wide bandwidth and high speed A/D allows the positioning of the gate
very accurately within the signal profile. The user can choose between several measurements performed within the
gate, average, peak, crest, max and min.
The max and min data are time stamped so that the position of these signals is recorded within the gate and can be
used to record the overshoot and undershoot of a pulsed signal.
● Markers
4 independent markers are available for denoting points of interest on the signal profile. The active marker can be
scrolled directly from the front panel. A delta marker can be set independently from the active marker to read the
difference or the average power result. The delta marker function can be linked to provide continuous scrolling
through the signal.
● Special Marker features
A set of specialised automatic marker functions has been provided to ease the measurement of pulsed systems.
These functions are automatic pulse rise time, pulse fall time, off time and pulse repetition interval.
● Trigger facilities
High speed measurements require precise triggering therefore the trigger level can be set manually or automatically.
The ML2490A series offer the following trigger modes:
Continuous, internal trigger on the rising or falling edge of either input A or input B and external TTL trigger.
The external trigger allows the power meter to be synchronised to external equipment. Data collection can be
delayed for a pre-determined time after the trigger point. The internal trigger facility incorporates a settable frame
arming facility which enables the power meter to synchronise to multi-pulse signals. A pre-trigger facility allows the
capture and display of information on the signal before the trigger.
The single shot trigger facility can be used to capture specific one off events with a bandwidth of 20MHz.
Long duration pulses can also be measured in CW mode and the trigger sensitivity extends to <-30dBm.
● Test Limits
The ML2490 series has two different types of automatic test limits. For many applications a simple power limit can
be set up to test the upper and /or lower boundaries of the signal. For pulsed systems such as RADAR a time varying
limit line can be set to test all aspects of the pulse profile. The power meter can be set up to indicate pass or fail and
to hold the measurement display on failure which is important when trying to track down intermittent faults.
An internal limit editor enables the user to create and select his or her own limit profiles.
● Presets
The ML2490 offers a number of radio system presets. Each preset configures the power meter settings to measure
a radio system. GSM, GPRS, WCDMA, WLAN, Bluetooth and radar are some of the examples of radio systems
supported by this facility.
● Settings stores
The power meter has 20 settings stores. These provide a convenient way of having application specific measurement
set ups for easy recall by the user.
● Remote Interfaces
The ML2490A series supports GPIB and RS 232 as standard.
● Secure mode
The ML2490A series has a secure mode for operations in security sensitive areas. Once activated the secure mode
wipes all information stored in the non-volatile RAM on power up.
● CW Meter Mode
Functions as a dual purpose high accuracy, high dynamic range CW power meter
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