Anritsu Spectrum Master MS276xA ultraportable USB spectrum analyzer
Anritsu / Series · Spectrum Analyzers

Spectrum Master MS2760A / MS2762A Ultraportable USB Spectrum Analyzers, 9 kHz to 170 GHz

USB-powered ultraportable spectrum analyzer family controlled from a Windows PC, with continuous coverage from 9 kHz (MS2760A) or 6 GHz (MS2762A) to 170 GHz.

Frequency Range
9 kHz to 32 GHz
Frequency Range
9 kHz to 44 GHz
Frequency Range
9 kHz to 50 GHz
Frequency Range
9 kHz to 70 GHz
View Models Datasheet

Overview

The Anritsu Spectrum Master MS276xA family consists of ultraportable spectrum analyzers that are powered over USB and controlled from a Windows-based PC, laptop or tablet. The family is offered in two lines: the MS2760A models cover 9 kHz up to 170 GHz, and the MS2762A models cover 6 GHz up to 170 GHz with higher dynamic range and lower displayed average noise level (DANL) for more demanding sensitivity requirements. Each line is available in eight frequency versions, with upper limits from 32 GHz to 170 GHz.

Measurement technology

The analyzers use Anritsu's patented nonlinear transmission line (NLTL) technology, which is also used in Anritsu vector network analyzers. The 145 GHz and 170 GHz models provide continuous broadband coverage above 110 GHz, which extends measurements into the full D band.

Form factor and use

Because of their small size, the instruments can be connected directly to the device under test, which avoids long test port cables that add loss and error at millimeter-wave frequencies. For over-the-air measurements, a waveguide horn antenna can be attached directly to the test port. The units are suited to use in the laboratory, on the production floor and in the field.

Software functions

The instruments offer channel power, adjacent channel power and occupied bandwidth measurements, along with spectrum and spectrogram displays, up to six traces, three trace detectors and 12 markers. An external 10 MHz frequency reference input and an external TTL trigger input are also provided.

Models in this series

Model Description
MS2760A-0032
Spectrum Master MS2760A-0032 Ultraportable Spectrum Analyzer, 9 kHz to 32 GHz
USB-powered ultraportable spectrum analyzer covering 9 kHz to 32 GHz with a K (m) test port, controlled from a Windows PC, laptop or tablet.
Details →
MS2760A-0044
Spectrum Master MS2760A-0044 Ultraportable Spectrum Analyzer, 9 kHz to 44 GHz
USB-powered ultraportable spectrum analyzer covering 9 kHz to 44 GHz with a K (2.92 mm) male test port, controlled from a Windows PC.
Details →
MS2760A-0050
Spectrum Master MS2760A-0050 Ultraportable Spectrum Analyzer, 9 kHz to 50 GHz
USB-powered ultraportable spectrum analyzer covering 9 kHz to 50 GHz with a V (1.85 mm) male test port
Details →
MS2760A-0070
Spectrum Master MS2760A-0070 Ultraportable Spectrum Analyzer, 9 kHz to 70 GHz
USB-powered ultraportable spectrum analyzer covering 9 kHz to 70 GHz with a V (1.85 mm) male test port, controlled from a Windows PC.
Details →
MS2760A-0090
Spectrum Master MS2760A-0090 Ultraportable Spectrum Analyzer, 9 kHz to 90 GHz
USB-powered ultraportable spectrum analyzer covering 9 kHz to 90 GHz with a W1 (1.0 mm) male test port connector.
Details →
MS2760A-0110
Spectrum Master MS2760A-0110 Ultraportable Spectrum Analyzer, 9 kHz to 110 GHz
USB-powered ultraportable spectrum analyzer covering 9 kHz to 110 GHz, with a W1 (1.0 mm) male test port and control from a Windows PC or tablet.
Details →
MS2760A-0145
Spectrum Master MS2760A-0145 Ultraportable Spectrum Analyzer, 9 kHz to 145 GHz
Ultraportable, USB-powered spectrum analyzer covering 9 kHz to 145 GHz with a 0.8 mm (m) test port connector.
Details →
MS2760A-0170
Spectrum Master MS2760A-0170 Ultraportable Spectrum Analyzer, 9 kHz to 170 GHz
USB-powered ultraportable spectrum analyzer covering 9 kHz to 170 GHz continuously, controlled from a Windows PC, laptop or tablet.
Details →
MS2762A-0032
Spectrum Master MS2762A-0032 Ultraportable Spectrum Analyzer, 6 GHz to 32 GHz
USB-powered ultraportable spectrum analyzer covering 6 GHz to 32 GHz with a K (2.92 mm) male test port, controlled from a Windows PC.
Details →
MS2762A-0044
Spectrum Master MS2762A-0044 Ultraportable Spectrum Analyzer, 6 GHz to 44 GHz
USB-powered ultraportable spectrum analyzer covering 6 GHz to 44 GHz with a K (2.92 mm) male test port and DANL as low as –142 dBm typical.
Details →
MS2762A-0050
Spectrum Master MS2762A-0050 Ultraportable Spectrum Analyzer, 6 GHz to 50 GHz
USB-powered ultraportable spectrum analyzer covering 6 GHz to 50 GHz with a V (1.85 mm) male test port, controlled from a Windows PC.
Details →
MS2762A-0070
Spectrum Master MS2762A-0070 Ultraportable Spectrum Analyzer, 6 GHz to 70 GHz
USB-powered ultraportable spectrum analyzer covering 6 GHz to 70 GHz with >108 dB typical dynamic range at 70 GHz and a V (1.85 mm) test port.
Details →
MS2762A-0090
Spectrum Master MS2762A-0090 Ultraportable Spectrum Analyzer, 6 GHz to 90 GHz
USB-powered ultraportable spectrum analyzer covering 6 GHz to 90 GHz with a W1 (1.0 mm) test port and –141 dBm typical DANL.
Details →
MS2762A-0110
Spectrum Master MS2762A-0110 Ultraportable Spectrum Analyzer, 6 GHz to 110 GHz
USB-powered ultraportable spectrum analyzer covering 6 GHz to 110 GHz with a W1 (1.0 mm) test port and high-sensitivity DANL performance.
Details →
MS2762A-0145
Spectrum Master MS2762A-0145 Ultraportable Spectrum Analyzer, 6 GHz to 145 GHz
USB-powered ultraportable spectrum analyzer covering 6 GHz to 145 GHz with a 0.8 mm test port, controlled from a Windows PC, laptop or tablet.
Details →
MS2762A-0170
Spectrum Master MS2762A-0170 Ultraportable Spectrum Analyzer, 6 GHz to 170 GHz
USB-powered ultraportable spectrum analyzer covering 6 GHz to 170 GHz with a 0.8 mm test port, controlled from a Windows PC, laptop or tablet.
Details →

Key Features

  • Continuous frequency coverage to 170 GHz
  • Broadband mmWave capabilities for radio astronomy, automotive radar, wireless backhaul, 802.11ad and satcom
  • Ultraportable form factor for measurements directly at the device under test
  • USB-powered and controlled from a Windows-based PC, laptop or tablet
  • Measurements: channel power, adjacent channel power, occupied bandwidth
  • Patented NLTL technology with > 100 dB dynamic range
  • -141/-136/-129/-122 dBm DANL to 90/110/145/170 GHz (Spectrum Master MS2762A)
  • Spectrum and spectrogram displays
  • Up to 6 traces, 3 trace detectors and 12 markers
  • Resolution bandwidth (RBW) 1 Hz to 3 MHz
  • External 10 MHz frequency reference input
  • External TTL trigger input

Specifications

Frequency
Frequency Range
MS2760A-0032
9 kHz to 32 GHz
Usable to 0 Hz
Frequency Range
MS2760A-0044
9 kHz to 44 GHz
Usable to 0 Hz; 40 GHz to 44 GHz typical
Frequency Range
MS2760A-0050
9 kHz to 50 GHz
Usable to 0 Hz
Frequency Range
MS2760A-0070
9 kHz to 70 GHz
Usable to 0 Hz; 67 GHz to 70 GHz typical
Frequency Range
MS2760A-0090
9 kHz to 90 GHz
Usable to 0 Hz
Frequency Range
MS2760A-0110
9 kHz to 110 GHz
Usable to 0 Hz; the web page specification table lists this model as MS2760A-0100, the datasheet and ordering table as MS2760A-0110
Frequency Range
MS2760A-0145
9 kHz to 145 GHz
Usable to 0 Hz
Frequency Range
MS2760A-0170
9 kHz to 170 GHz
Usable to 0 Hz; 160 GHz to 170 GHz typical
Frequency Range
MS2762A-0032
6 GHz to 32 GHz
Frequency Range
MS2762A-0044
6 GHz to 44 GHz
40 GHz to 44 GHz typical
Frequency Range
MS2762A-0050
6 GHz to 50 GHz
Frequency Range
MS2762A-0070
6 GHz to 70 GHz
67 GHz to 70 GHz typical
Frequency Range
MS2762A-0090
6 GHz to 90 GHz
Frequency Range
MS2762A-0110
6 GHz to 110 GHz
Frequency Range
MS2762A-0145
6 GHz to 145 GHz
Frequency Range
MS2762A-0170
6 GHz to 170 GHz
160 GHz to 170 GHz typical
Tuning Resolution 1 Hz
Internal 10 MHz Frequency Reference, Accuracy ±0.2 ppm (25 °C ± 25 °C) + aging
Internal 10 MHz Frequency Reference, Aging ±1.0 ppm/year
Frequency Span 10 Hz to maximum frequency range of instrument
Bandwidth
Resolution Bandwidth (RBW) 1 Hz to 3 MHz
Span ≥10 Hz; Zero Span 5 kHz to 20 MHz
Video Bandwidth (VBW) 1 Hz to 3 MHz
Span ≥10 Hz; Zero Span 5 kHz to 20 MHz
VBW/Average Type Linear / Log
RBW Filters Flat Top, Nuttall
Shape Factor <5:1
typical
Amplitude
Dynamic Range
MS2760A
> 103 dB at 70 GHz
typical, 2/3 (TOI – DANL) in 1 Hz RBW
Dynamic Range
MS2762A
> 108 dB at 70 GHz
typical, 2/3 (TOI – DANL) in 1 Hz RBW
Display Range 1 dB to 15 dB/div in 1 dB steps, ten divisions displayed
Measurement Range
MS2760A
DANL to +10 dBm
Measurement Range
MS2762A
DANL to 0 dBm
Reference Level Range –120 dBm to +30 dBm
Amplitude Units dBm
Maximum Safe Level Input
MS2760A
+30 dBm CW, ±10 VDC
Maximum Safe Level Input
MS2762A
+18 dBm CW, ±10 VDC
Amplitude Accuracy (–10 dBm CW signal)
9 kHz to 644 MHz
MS2760A
±1.3 dB max, ±0.5 dB typ (20 °C to 30 °C); ±2.0 dB max, ±0.5 dB typ (0 °C to 50 °C)
After 30 minute warm-up (20 °C to 30 °C) / 60 minute warm-up (0 °C to 50 °C)
> 644 MHz to 40 GHz
MS2760A
±1.8 dB max, ±0.5 dB typ (20 °C to 30 °C); ±3.0 dB max, ±1.0 dB typ (0 °C to 50 °C)
≥ 6 GHz to 40 GHz
MS2762A
±1.8 dB max, ±0.5 dB typ (20 °C to 30 °C); ±3.0 dB max, ±1.0 dB typ (0 °C to 50 °C)
> 40 GHz to 70 GHz ±2.0 dB max, ±0.5 dB typ (20 °C to 30 °C); ±3.0 dB max, ±1.0 dB typ (0 °C to 50 °C)
> 70 GHz to 90 GHz ±2.2 dB max, ±0.5 dB typ (20 °C to 30 °C); ±3.0 dB max, ±1.0 dB typ (0 °C to 50 °C)
> 90 GHz to 110 GHz ±2.5 dB max, ±0.5 dB typ (20 °C to 30 °C); ±3.0 dB max, ±1.0 dB typ (0 °C to 50 °C)
> 110 GHz to 145 GHz ±3.5 dB max, ±0.5 dB typ (20 °C to 30 °C); ±4.0 dB max, ±1.5 dB typ (0 °C to 50 °C)
> 145 GHz to 170 GHz ±3.5 dB max, ±0.5 dB typ (20 °C to 30 °C); ±4.0 dB max, ±1.5 dB typ (0 °C to 50 °C)
Amplitude Accuracy > 160GHz typical
Displayed Average Noise Level (DANL)
10 MHz to 670 MHz
MS2760A
–131 dBm max, –134 dBm typ
RMS detection, VBW/Avg type = Log, IF Gain On, 1 Hz RBW
> 670 MHz to 4 GHz
MS2760A
–136 dBm max, –140 dBm typ
RMS detection, VBW/Avg type = Log, IF Gain On, 1 Hz RBW
> 4 GHz to 40 GHz
MS2760A
–131 dBm max, –134 dBm typ
RMS detection, VBW/Avg type = Log, IF Gain On, 1 Hz RBW
> 40 GHz to 70 GHz
MS2760A
–128 dBm max, –132 dBm typ
RMS detection, VBW/Avg type = Log, IF Gain On, 1 Hz RBW
> 70 GHz to 90 GHz
MS2760A
–127 dBm max, –130 dBm typ
RMS detection, VBW/Avg type = Log, IF Gain On, 1 Hz RBW
> 90 GHz to 110 GHz
MS2760A
–123 dBm max, –127 dBm typ
RMS detection, VBW/Avg type = Log, IF Gain On, 1 Hz RBW
> 110 GHz to 145 GHz
MS2760A
–112 dBm max, –120 dBm typ
RMS detection, VBW/Avg type = Log, IF Gain On, 1 Hz RBW
> 145 GHz to 170 GHz
MS2760A
–107 dBm max, –114 dBm typ
RMS detection, VBW/Avg type = Log, IF Gain On, 1 Hz RBW
> 6 GHz to 40 GHz
MS2762A
–135 dBm max, –142 dBm typ
RMS detection, VBW/Avg type = Log, IF Gain On, 1 Hz RBW
> 40 GHz to 70 GHz
MS2762A
–137 dBm max, –141 dBm typ
RMS detection, VBW/Avg type = Log, IF Gain On, 1 Hz RBW
> 70 GHz to 90 GHz
MS2762A
–136 dBm max, –141 dBm typ
RMS detection, VBW/Avg type = Log, IF Gain On, 1 Hz RBW
> 90 GHz to 110 GHz
MS2762A
–132 dBm max, –136 dBm typ
RMS detection, VBW/Avg type = Log, IF Gain On, 1 Hz RBW
> 110 GHz to 145 GHz
MS2762A
–119 dBm max, –129 dBm typ
RMS detection, VBW/Avg type = Log, IF Gain On, 1 Hz RBW
> 145 GHz to 170 GHz
MS2762A
–114 dBm max, –122 dBm typ
RMS detection, VBW/Avg type = Log, IF Gain On, 1 Hz RBW
Spectral Purity and Distortion
SSB Phase Noise @ 1 GHz, 1 kHz / 10 kHz / 100 kHz offset
MS2760A
–100 / –110 / –116 dBc/Hz
typical, 20 °C to 30 °C
SSB Phase Noise @ 7 GHz, 1 kHz / 10 kHz / 100 kHz offset
MS2762A
–89 / –97 / –98 dBc/Hz
typical, 20 °C to 30 °C
SSB Phase Noise @ 60 GHz, 1 kHz / 10 kHz / 100 kHz offset –69 / –84 / –84 dBc/Hz
typical, 20 °C to 30 °C
Third-Order Intercept (TOI)
MS2760A
2 GHz: +35 dBm; 18 GHz: +35 dBm; 62 GHz: +25 dBm
IF Gain Off, typical, 0 dBm tones 1 MHz apart, 0 dBm reference level
Third-Order Intercept (TOI)
MS2762A
18 GHz: +22 dBm; 62 GHz: +21 dBm
IF Gain Off, typical, -10 dBm tones 1 MHz apart, –10 dBm reference level
Second Harmonic Distortion
MS2760A
0 dBm Input: –50 dBc maximum; –20 dBm Input: –60 dBc maximum
at 1 GHz input
Second Harmonic Distortion
MS2762A
–25 dBm Input: –50 dBc maximum
at 7 GHz input
Residual Spurs, 10 MHz to 70 GHz
MS2760A
–85 dBm max, –95 dBm typ
Residual Spurs, 6 GHz to 70 GHz
MS2762A
–85 dBm max, –95 dBm typ
Input-related Spurious, all other input frequencies <–60 dBc
–10 dBm CW input (MS2760A); –20 dBm CW input (MS2762A)
Sweep, Trace and Marker Functions
Smart Measurements Channel Power, Occupied Bandwidth, Adjacent Channel Power
Zero Span Sweep Time 0.02 ms to 60 s
Sweep (Trace) Points Settable range from 10 to 10,001 points; the default is 501 points
Sweep Time Accuracy ± 2% in Zero Span
Traces Up to six traces
Detector Type per Trace Peak, RMS / Avg, Negative
Markers Up to 12 Markers
Spectrogram Trace Time Cursor Up to six Time Cursors to recall historical trace data by trace number or time
External Trigger
Source External, Free Run, Video, Periodic (0 s to 5 s)
Delay 0 ms to 1670 ms; –60 s (up to sweep time) in zero span and video or external trigger
Holdoff 0 ms to 5000 ms
Slope Rising, Falling, Both
Hysteresis 0 dB to 200 dB
Connectors
RF In
MS2760A-0032, MS2760A-0044, MS2762A-0032, MS2762A-0044
K Connector (2.92 mm), male 50Ω
32 GHz and 44 GHz instruments; compatible with SMA and 3.5 mm connectors
RF In
MS2760A-0050, MS2760A-0070, MS2762A-0050, MS2762A-0070
V Connector (1.85 mm), male 50Ω
50 GHz and 70 GHz instruments; compatible with 2.4 mm connectors
RF In
MS2760A-0090, MS2760A-0110, MS2762A-0090, MS2762A-0110
W Connector (1.0 mm), male 50Ω
90 GHz and 110 GHz instruments
RF In
MS2760A-0145, MS2760A-0170, MS2762A-0145, MS2762A-0170
0.8 mm Connector, male 50Ω
145 GHz and 170 GHz instruments
USB Interface USB 3.0, Type C Connector
External Reference In MCX(f), 50Ω, 10 MHz
External Trigger In MCX(f), 50Ω, TTL Levels
Computer Requirement
Display Resolution 16:9 / 16:10 Aspect Ratio (>1280 x 720 / 1280 x 800)
Operating System Windows® 7, 8.1, 10; 64-bit
Recommended Minimum Configuration Quad Core i7 fourth generation or higher CPU, 16 GB RAM, 128 GB Data Storage, USB 3.0
Environmental
Environmental Standard MIL-PRF-28800F Class 3
not including Windows Tablet/Laptop/PC
Operating Temperature Range 0 ºC to 50 ºC
Storage Temperature Range –40 ºC to 71 ºC
Maximum Relative Humidity 95 % RH at 30 ºC, non-condensing
Half Sine Shock 30 g
Altitude 4600 meters, operating and non-operating
General
Size 155 mm x 84 mm x 27 mm (6.1 in x 3.3 in x 1.1 in)
not including Windows Tablet/Laptop/PC
Weight 255 g (9.0 oz)
Warranty Standard one-year warranty
The web page and MS2760A Quick Fact Sheet state a standard three-year warranty; the technical data sheet states one year
Calibration Cycle Recommended calibration cycle is 12 months
Safety EN 61010-1:2010

Applications

  • Automotive radar testing
  • Satellite communications
  • Radio astronomy
  • Wireless backhaul
  • Antenna beam pattern testing
  • 5G and mmWave device development
  • 802.11ad/WiGig spectral mask testing
  • On-wafer spectrum measurements
  • Microwave radio link testing
  • Electronic warfare and radar
  • RF component and device characterization on the production line
  • D band research and development

Options & Accessories

Option Description
MS276xA-0097 Accredited Calibration — Accredited Calibration to ISO17025 and ANSI/NCSL Z540-1, includes calibration certificate, test report, and uncertainty data
MS276xA-0098 Standard Calibration — Standard Calibration to ISO17025 and ANSI/NCSL Z540-1, includes calibration certificate
MS276xA-0099 Premium Calibration — Premium Calibration to ISO17025 and ANSI/NCSL Z540-1, includes calibration certificate, test report, and uncertainty data
1091-456-R Adapter, 49.9 to 67.0 GHz, WR15 to V(f)
1091-457-R Adapter, 39.3 to 59.7 GHz, WR19 to V(f)
1091-458-R Adapter, 33.0 to 50.1 GHz, WR22 to V(f)
1091-459-R Adapter, 26.4 to 40.1 GHz, WR28 to V(f)
1091-402-R Inline Adapter, W1 (f) to WR15, 50 to 75 GHz
1091-401-R Inline Adapter, W1 (f) to WR12, 60 to 90 GHz
1091-400-R Inline Adapter, W1 (f) to WR10, 75 to 110 GHz
2000-1889-R Inline Adapter, K (f) to WR42, 17.6 to 26.7 GHz
2000-1890-R Inline Adapter, K (f) to WR28, 26.4 to 40.1 GHz
2000-1880-R Coaxial Adapter, V (f) to N (m), DC to 18 GHz, 50 Ω
2000-1881-R Coaxial Adapter, V (f) to N (f), DC to 18 GHz, 50 Ω
2000-1605-R BNC(m) - MCX(m) Cable, 1.5 meters
2000-1859-R USB 3.0 Type C to Type A Cable, 1m
2000-1888-R USB 3.0 Extender Cable, 10m — USB 3.0 Powered Extension Cable, 10 m (32 ft); up to two can be used in series for a total length of 20 m
2000-1918-R 200m USB multimode fiber extender — 4-port 200 m USB Multimode Fiber Extender System
2000-1867-R Directional Horn Antenna, 17.6 to 26.7 GHz, WR42, 25 dBi gain
2000-1868-R Directional Horn Antenna, 26.4 to 40.1 GHz, WR28, 25 dBi gain
2000-1869-R Directional Horn Antenna, 33.0 to 50.1 GHz, WR22, 25 dBi gain
2000-1870-R Directional Horn Antenna, 39.3 to 59.7 GHz, WR19, 25 dBi gain
2000-1871-R Directional Horn Antenna, 49.9 to 75.8 GHz, WR15, 25 dBi gain
2000-1872-R Directional Horn Antenna, 60.0 to 90.0 GHz, WR12, 25 dBi gain
2000-1873-R Directional Horn Antenna, 75.0 to 110.0 GHz, WR10, 25 dBi gain
2000-2003-R Directional Horn Antenna, 24 GHz to 40 GHz, WR28, 19 dBi gain — Small form factor assembly with K(f) adapter, mounting bracket, and case
2000-1929-R Low Noise Amplifier, 18 GHz to 42 GHz, 28 dB Gain, V(m) to V(f) — Fits models MS276xA-0050 and MS276xA-0070. Noise Figure: 4 dB; Max RF input level: -5 dBm (0 dBm damage level); specification temperature +25°C
2000-1933-R USB power bank for the MS276xA Low Noise Amplifier accessory — Includes battery, USB Type-C cable, and two fastening straps
760-291-R Transit Case

Documents & Resources

Spectrum Master Ultraportable Spectrum Analyzer MS276xA Product Brochure
brochure
Spectrum Master MS2760A Ultraportable mmWave Spectrum Analyzer Quick Fact Sheet
brochure · PDF
Spectrum Master MS2762A Ultraportable mmWave Spectrum Analyzer Quick Fact Sheet
brochure
Antennas and Antenna Kits
datasheet · PDF
Spectrum Master MS276xA Technical Data Sheet
datasheet · PDF
Low Noise Amplifiers Technical Data Sheet
datasheet · PDF
USB Extender Technical Data Sheet
datasheet · PDF
USB 3.0 Extension Cable 2000-1888-R Technical Data Sheet
datasheet · PDF
Ultraportable Spectrum Analyzer Declaration of Conformity
other · PDF
IoT, Medical & Healthcare Device Wireless Communication Quality Improvement
app note
Spectrum Monitoring with Field Master Pro Series Spectrum Analyzers
app note
Combining On-Wafer Vector Network Analyzer and Spectrum Analyzer Measurements to 110 GHz Application Note
app note
Automotive Radar Testing with Anritsu’s Spectrum Master MS2760A Ultraportable Spectrum Analyzer
app note
Millimeter Wave Measurement Solutions
brochure
Automotive Testing & Verification Solutions
brochure
Spectrum Master Ultraportable Spectrum Analyzer Product Flyer
brochure
Signal Analyzers and Spectrum Analyzers Selection Guide
brochure
Electronic Measuring Instruments Digest 2026 Catalog
brochure
Precision RF & Microwave Components Catalog
brochure
Automotive Test Solutions
brochure
Spectrum Master MS276xA User Guide
manual
Spectrum Master MS276xA Help
manual
Spectrum Master MS2760A Maintenance Manual
manual