Anritsu Spectrum Master MS2711D Owner's manual

Fast. Accurate, Repeatable, Portable Spectrum Analysis
Spectrum Master™
MS2711D
MS2712
MS2712
MS2712
SiteMaster
SpectrumMaster
CellMaster
MS2711DSpectrumMaster
S331DSiteMaster SiteMaster SpectrumMaster MT8212ACellMaster CellMaster

WARRANTY
The Anritsu product(s) listed on the title page is (are) warranted against defects in materi-
als and workmanship for one year from the date of shipment.
Anritsu’s obligation covers repairing or replacing products which prove to be defective
during the warranty period. Buyers shall prepay transportation charges for equipment re-
turned to Anritsu for warranty repairs. Obligation is limited to the original purchaser.
Anritsu is not liable for consequential damages.
LIMITATION OF WARRANTY
The foregoing warranty does not apply to Anritsu connectors that have failed due to nor-
mal wear. Also, the warranty does not apply to defects resulting from improper or inade-
quate maintenance by the Buyer, unauthorized modification or misuse, or operation
outside the environmental specifications of the product. No other warranty is expressed or
implied, and the remedies provided herein are the Buyer’s sole and exclusive remedies.
TRADEMARK ACKNOWLEDGEMENTS
Spectrum Master is a trademark of Anritsu Company.
NOTICE
Anritsu Company has prepared this manual for use by Anritsu Company personnel and
customers as a guide for the proper installation, operation, and maintenance of Anritsu
Company equipment and computer programs. The drawings, specifications, and informa-
tion contained herein are the property of Anritsu Company, and any unauthorized use or
disclosure of these drawings, specifications, and information is prohibited; they shall not
be reproduced, copied, or used in whole or in part as the basis for manufacture or sale of
the equipment or software programs without the prior written consent of Anritsu Com-
pany.
UPDATES
Updates to this manual, if any, may be downloaded from the Anritsu internet site at:
www.us.anritsu.com.
October 2004 10580-00098
Copyright ã2004 Anritsu Co. Revision: C

Table of Contents
Programming Overview . . . . . . . . . . . . . . . . . . . . . . . . . ............1
Control Byte Summary. . . . . . . . . . . . . . . . . . . . . . ................3
Control Byte Descriptions . . . . . . . . . . . . . . . . . . . . ................7
Setup System – Control Byte #1 (01h) ....................................7
Select Measurement Mode – Control Byte #3 (03h) .............................7
Read Time/Date – Control Byte #7 (07h)...................................7
Set Time/Date – Control Byte #8 (08h)....................................8
Set Reference Number – Control Byte #9 (09h) ...............................8
Serial Port Echo On/Off – Control Byte #10 (0Ah) .............................8
Watch-Dog Timer On/Off – Control Byte #12 (0Ch) ............................9
Store Sweep Trace – Control Byte #16 (10h).................................9
Recall Sweep Trace – Control Byte #17 (11h) ...............................10
Save System Setup – Control Byte #18 (12h) ................................14
Recall System Setup – Control Byte #19 (13h) ...............................14
Query System Status – Control Byte #20 (14h) ...............................15
Trigger Self-Test – Control Byte #21 (15h) .................................19
Read Fail Counter – Control Byte #22 (16h) ................................19
Clear Fail Counters - Control Byte #23 (17h) ................................20
Query Trace Names – Control Byte #24 (18h) ...............................20
Delete Sweep Trace – Control Byte #25 (19h) ...............................20
Upload SPA Sweep Trace – Control Byte #26 (1Ah) ............................20
Query Sweep Memory – Control Byte #27 (1Bh)..............................24
Query System Status – Control Byte #29 (1Dh) ..............................24
Select Printer Type – Control Byte #30 (1Eh)................................31
Recall Sweep Trace – Control Byte #33 (21h) ...............................32
Set A/B Trace – Control Byte #34 (22h) ..................................39
Set Spectrum Analyzer A/B Trace – Control Byte #35 (23h) .......................39
Upload Sweep Trace – Control Byte #36 (24h) ..............................40
Get Options – Control Byte #37 (25h) ...................................45
Query Power Level – Control Byte #39 (27h) (Option 29 only) ......................45
Set Power Meter Units – Control Byte #40 (28h) (Option 29 only) ....................46
Power Meter Relative Mode On/Off – Control Byte #41 (29h) (Option 29 only) .............46
Power Meter Offset Mode On/Off – Control Byte #42 (2Ah) (Option 29 only) ..............46
Power Meter Zero Mode On/Off – Control Byte #43 (2Bh) (Option 29 only) ...............46
Power Meter RMS Averaging On/Off – Control Byte #44 (2Ch) (Option 29 only) ............47
Power Meter Center Freq and Span Setup – Control Byte #45 (2Dh) (Option 29 only) ..........47
Trigger Sweep – Control Byte #48 (30h) ..................................47
Spectrum Master PM i

Sweep Data Echo On/Off - Control Byte #49 (31h).............................48
Check Battery Status – Control Byte #50 (32h) ...............................48
Set SPA Minimum Sweep Time - Control Byte #53 (35h) .........................49
Set Trigger Position - Control Byte #54 (36h) ...............................49
Set Video Trigger Level - Control Byte #55 (37h) .............................49
Automatically Save Runtime Setup – Control Byte #64 (40h) .......................50
Download Saved Setup – Control Byte #65 (41h) .............................50
Upload Setup – Control Byte #66 (42h) ...................................60
Query Saved Setups – Control Byte #68 (44h) ...............................70
Enter Remote Mode – Control Byte #69 (45h) ...............................71
Enter Remote Mode Immediately – Control Byte #70 (46h) ........................71
Write Protect Setup – Control Byte #71 (47h) ...............................72
Clear Setup Memory Location – Control Byte #72 (48h) ..........................72
Write Antenna – Control Byte #82 (52h) ..................................73
Recall Antenna – Control Byte #83 (53h) .................................73
Set Field Strength Measurement – Control Byte #84 (54h) .........................74
Set Channel Power – Control Byte #85 (55h) ................................74
Read Channel Power – Control Byte #86 (56h) ...............................75
Set Adjacent Channel Power Ratio (ACPR) – Control Byte #87 (57h) ...................75
Read Adjacent Channel Power Ratio (ACPR) – Control Byte #88 (58h)..................76
Read Signal Standard Name – Control Byte #89 (59h) ...........................76
Measure OCC BW % of Power – Control Byte #96 (60h) .........................76
Measure OCC BW dB Down – Control Byte #97 (61h) ..........................77
Set Bias Tee Function - Control Byte #98 (62h) (Option 10 only) .....................77
Set Spectrum Analyzer Start/Stop Frequency – Control Byte #99 (63h) ..................78
Set Spectrum Analyzer Center Freq./Span – Control Byte #100 (64h) ...................78
Set Spectrum Analyzer Scale – Control Byte #101 (65h) ..........................78
Set Spectrum Analyzer Marker – Control Byte #102 (66h) .........................79
Set Spectrum Analyzer Single Limit – Control Byte #103 (67h) ......................79
Set Spectrum Analyzer Peak Hold – Control Byte #105 (69h) .......................80
Set Spectrum Analyzer Resolution Bandwidth – Control Byte #106 (6Ah) ................80
Set Spectrum Analyzer Video Bandwidth – Control Byte #107 (6Bh) ...................80
Set Spectrum Analyzer Sweep Mode – Control Byte #108 (6Ch) .....................81
Set Spectrum Analyzer Marker to Peak – Control Byte #109 (6Dh) ....................81
Set Spectrum Analyzer Marker to Center – Control Byte #110 (6Eh) ...................81
Set Spectrum Analyzer Attenuation – Control Byte #111 (6Fh) ......................81
Set Spectrum Analyzer Multiple Limit – Control Byte #113 (71h) ....................82
Set Return Spectrum Analyzer Sweep Time – Control Byte #114 (72h) ..................83
Set Reference Level Offset – Control Byte #115 (73h) ...........................83
Set Spectrum Analyzer Impedance - Control Byte #116 (74h) .......................84
ii Spectrum Master PM

Read Marker Value – Control Byte #117 (75h) ...............................84
Set Sweep Averaging – Control Byte #118 (76h) ..............................85
Normalize Spectrum Analyzer - Control Byte #130 (82h) .........................85
Set Spectrum Analyzer Normalization Status - Control Byte #131 (83h) .................85
Set / Reset Spectrum Analyzer External Reference – Control Byte #133 (85h) ..............85
Check Spectrum Analyzer External Reference – Control Byte #134 (86h).................86
Set Spectrum Analyzer Preamp State (On/Off/Auto) – Control Byte #136 (88h) .............86
Set Spectrum Analyzer Units – Control Byte #140 (8Ch) .........................86
Set Spectrum Analyzer Resolution Bandwidth – Control Byte #141 (8Dh) ................87
Set Spectrum Analyzer Video Bandwidth – Control Byte #142 (8Eh) ...................87
Set Spectrum Analyzer Attenuation – Control Byte #143 (8Fh) ......................88
Set AM/FM Demodulation – Control Byte #145 (91h) ...........................88
Set Baud Rate – Control Byte #197 (C5h) .................................89
Set Language – Control Byte #198 (C6h) ..................................89
Query Time – Control Byte #208 (D0h) ..................................89
Read ASCII Serial Number – Control Byte #225 (E1h) ..........................90
Exit Remote Mode – Control Byte #255 (FFh) ...............................90
Select Spectrum Analyzer/Power Meter Signal Standard - Control Word (A103h) ............90
Select Spectrum Analyzer/Power Meter Channel - Control Word (A104h) ................90
Read External Module Name – Control Word (A201h) (Option 6 only) ..................91
Read External Module Serial Number – Control Word (A202h) (Option 6 only) .............91
Read External Module Frequency Range – Control Word (A203h) (Option 6 only) ............91
Read Module Fail Counter – Control Word (A204h) (Option 6 only) ...................92
Clear Module Fail Counter – Control Word (A205h) (Option 6 only) ...................92
Perform Transmission Mode Calibration – Control Word (A301h) (Option 21 only) ...........92
Turn OFF Transmission Mode Calibration – Control Word (A302h) (Option 21 only) ..........93
Remote Self Test – Control Word (AA15h).................................93
Trigger Sweep – Control Word (AA30h) ..................................95
Programming Examples . . . . . . . . . . . . . . . .....................96
Examples in C ................................................96
Example in Visual Basic ..........................................105
Parameter Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ......107
Spectrum Analyzer Signal Standards . . . . . . . . . . . . . . . . . ...........108
Spectrum Master PM iii

Programming Overview
NOTE: This programming manual is written exclusively for the Anritsu Spectrum Master MS2711D. For
information on firmware upgrades, contact your local Anritsu Service Center. Commands listed in this
manual are not all backward-compatible with earlier Anritsu models.
General Description
The Spectrum Master must first be set into “remote” mode for communication with a computer. Remote mode differs from
normal repetitive sweep and single-sweep modes. During remote mode, the Spectrum Master suspends normal operations and
attends to the serial port. The front panel display indicates when the Spectrum Master is in remote mode.
Once in remote mode, a series of control bytes and associated data are sent to the Spectrum Master to perform various func-
tions and activities. The serial port supports virtually all features accessible from the keypad with the exception of the
printer. The printer requires connection to the same 9-pin connector on the Spectrum Master rear panel used for remote com-
munication.
To complete the communication session, send the control byte to exit remote mode and the Spectrum Master will resume nor-
mal operations. You may also exit the remote mode by pressing the ESCAPE/CLEAR key on the Spectrum Master front
panel.
Interface Cable Installation
The Spectrum Master is a DTE-type serial device. Communication between the Spectrum Master and a PC is accomplished
over a null modem serial cable provided with the Spectrum Master (Anritsu part number 800-441). Connect the cable to the
Serial Interface connector on the Spectrum Master test connector panel and to the appropriate COM port connector on the
PC.
Serial Communication Parameters
The Spectrum Master begins communication at 9600 bps when first powered on. It uses no parity bits, 8 data bits, and 1 stop
bit (N-8-1). No hardware handshaking is used. The Set Baud Rate Control Byte #197 (C5h) serial command can be used to
change the baud rate to 19,200, 38,400, 56,000 or 115,200. An invalid setting returns the rate to 9600.
Communications Error Checking
Since there is no hardware handshaking, byte level error handling must be done by the controlling program. Use the expected
number of response bytes (listed in the control byte description section of this manual) when waiting for feedback from the
Spectrum Master. For data streams going to the Spectrum Master, the “watch dog timer” protects against interrupted trans-
missions by aborting a control byte sequence if the inter-byte time limit is exceeded.
Parameter Validation
The Spectrum Master validates input parameters for each control byte sequence. If the input parameters are out of range or
invalid, the Spectrum Master notifies the computer by sending Parameter Error Byte #224 (E0h). The Spectrum Master dis-
cards the received data and waits for the next control byte.
Entering Remote Mode
Send the Enter Remote Mode Byte #69 (45h) to the Spectrum Master to enter remote mode at the end of the current sweep.
Send the Enter Remote Mode Immediately byte #70 (46h) to enter remote mode in the middle of a sweep.
The Spectrum Master serial port buffer is one byte wide. No internal buffer exists, so waiting for the response from the unit is
essential. If the Spectrum Master is not in remote mode, sending a second byte overwrites the original byte commanding it to
enter remote mode. If control byte #69 is sent, the Spectrum Master will enter remote mode at the end of the current sweep. If
control byte #70 is sent, the unit will enter remote mode as soon as it receives the byte. This means that data stored for the
Spectrum Master PM 1

current sweep may be incomplete. Once a response string is received from the Spectrum Master, the unit is ready to accept
additional control bytes.
Exiting Remote Mode
To exit remote mode, send the Exit Remote Control byte #255 (FFh) to the Spectrum Master. The Spectrum Master sends a
response byte of 255 (FFh) then exits remote mode. Remote mode can also be exited by pressing the ESCAPE/CLEAR
front panel key.
Remote Mode Changes to Spectrum Master Operating Parameters
System parameters changed during remote mode remain changed for normal operation after the unit exits remote mode.
However, the changes are not automatically written to the non-volatile EEPROM. Turning off the Spectrum Master power
erases the changed settings.
To retain the changes, the setup must be saved to one of the setup memory locations. Use either the run-time setup location 0,
(which holds the power-on defaults) or one of the nine other setup locations. Control byte #64 (40h) sets the auto-save flag
which commands the Spectrum Master to automatically save the changes to the run-time setup location upon exiting remote
mode. See the Spectrum Master User’s Guide or information in this manual on control byte #18 (12h) for further details.
Write Cycle Limitation of EEPROM
The EEPROM, used to store calibrations, setups and traces has a guaranteed lifetime of at least 100,000 write cycles and an
unlimited number of read cycles. The write cycle limitation is for a specific location. For example, setup #1 can be stored
100,000 times and setup #2 can be stored 100,000 times, etc. Because of this, the Spectrum Master does not automatically
store the changed system parameters to the EEPROM. Be aware of the EEPROM write cycle limitation when programming
the Spectrum Master and keep the number of write cycles to a minimum.
Documentation Conventions
Throughout this manual, the following conventions will be observed:
Numeric Representation
Hexadecimal numbers are represented with the suffix h. For example, the decimal number 255 is represented in hexadecimal
as FFh.
Binary numbers are represented with the suffix b. For example, the decimal number 2 is represented in binary as 10b.
Decimal numbers are represented with the prefix #when referring to a control byte (command byte) and without a prefix or
suffix in all other cases.
Bit Positions
When enumerating bits in a byte, bit 0 will always be the least significant bit (LSB).
Mode References
The term “SPA” in reference to a command denotes Spectrum Analyzer mode. All other modes are referenced individually.
2 Spectrum Master PM

Control Byte Summary
Control
Byte # Name Description Watchdog
Timer
1 (01h) Setup System Sets system status flags and switches Yes
3 (03h) Select Measurement Mode Sets current Spectrum Master measurement mode Yes
7 (07h) Read Time/Date Reads the current time and date from the real time clock —-
8 (08h) Set Time/Date Sets time and date of the Spectrum Master Yes
9 (09h) Set Reference Number Sets reference number (trace name) for a sweep trace Yes
10 (0Ah) Serial Port Echo On/Off Allows synchronization of the Spectrum Master and request from computer for
sweep trace Yes
12 (0Ch) Watch-dog Timer On/Off Enables or disables the watch-dog timer —-
16 (10h) Store Sweep Trace Saves current trace data to EEPROM —-
17 (11h) Recall Sweep Trace Spectrum Master sends the sweep data associated with a trace (obsolete) Yes
18 (12h) Save System Setup Saves system setup parameters to EEPROM Yes
19 (13h) Recall System Setup Recalls system setup parameters from EEPROM Yes
20 (14h) Query System Status Gets the current system settings (obsolete) —-
21 (15h) Trigger Self-Test Triggers a self test —-
22 (16h) Read Fail Counters Returns the values of the lock-fail counters —-
23 (17h) Clear Fail Counters Resets the Lock Fail counters —-
24 (18h) Query Trace Names Returns list of all saved traces —-
25 (19h) Delete Sweep Trace Deletes single or all stored sweep traces Yes
26 (1Ah) Upload SPA Sweep Trace Uploads a spectrum analyzer sweep trace to Spectrum Master (obsolete) Yes
27 (1Bh) Query Sweep Memory Queries Spectrum Master for percentage of memory that is available for trace
storage —-
29 (1Dh) Query System Status Queries the Spectrum Master for current system settings Yes
30 (1Eh) Select Printer Type Selects printer type Yes
33 (21h) Recall Sweep Trace Queries the Spectrum Master for sweep trace data Yes
34 (22h) Set A/B Trace Defines traces "A" and "B" Yes
35 (23h) Set SPA A/B Trace Defines traces “A” and “B” for SPA mode Yes
36 (24h) Upload Sweep Trace Uploads a sweep trace to the Spectrum Master Yes
37 (25h) Get Options Returns an ASCII string listing installed options —-
39 (27h) Query Power Level Returns power level at RF In in Power Meter mode —-
40 (28h) Set Power Meter Units Sets Power Meter displaying unit Yes
41 (29h) Set Power Meter Relative
Mode Enables or disables Power Meter Relative Mode Yes
42 (2Ah) Set Power Meter Offset
Mode Enables or disables Power Meter offset Yes
43 (2Bh) Set Power Meter Zero
Mode Enables or disables Power Meter zeroing mode Yes
44 (2Ch) Power Meter RMS
Averaging On/Off Sets Power Meter RMS Averaging. Yes
Spectrum Master PM 3

Control
Byte # Name Description Watchdog Timer
45 (2Dh) Power Meter Center
Frequency and Span Sets the center frequency and span frequency for the Power Meter mode Yes
48 (30h) Trigger Sweep Starts the next sweep —-
49 (31h) Sweep Data Echo On/Off Sets the sweep data echo mode On/Off Yes
50 (32h) Check Battery Status Returns smart battery status —-
53 (35h) Set SPA Minimum Sweep
Time Sets the min sweep time for the SPA Yes
54 (36h) Set Trigger Position Sets the trigger position for the SPA when the span is 0 Yes
55 (37h) Set Video Trigger Level Sets the trigger level for the SPA in video trigger mode Yes
64 (40h) Auto Save Runtime Setup Automatically save the runtime setup when exiting remote mode Yes
65 (41h) Download Saved Setup Returns parameters associated with the saved setup Yes
66 (42h) Upload Setup Receives parameters defining a setup and saves them in the memory location
associated with the specified setup number. Yes
68 (44h) Query Saved Setups Returns a list of saved setups Yes
69 (45h) Enter Remote Mode Enters remote mode at the end of the sweep and returns model number and
firmware version —-
70 (46h) Enter Remote Mode
Immediately
Enters remote mode immediately and returns model number and firmware
version —-
71 (47h) Write Protect Setup Sets a stored setup memory location to read-only Yes
72 (48h) Clear Setup Memory
Location Clears a setup memory location to <EMPTY> Yes
82 (52h) Write Antenna Writes custom antenna data to the Spectrum Master via the serial port Yes
83 (53h) Recall Antenna Recalls custom antenna data from the Spectrum Master via the serial port Yes
84 (54h) Set Field Strength
Measurement Sets the field strength measurement state and the antenna index Yes
85 (55h) Set Channel Power Sets the Channel Power measurement state and the setup parameters Yes
86 (56h) Read Channel Power Reads the current channel power or the channel power of a stored trace Yes
87 (57h) Set ACPR Sets the ACPR measurement state and parameters Yes
88 (58h) Read ACPR Reads the current adjacent channel power or the adjacent channel power of a
stored trace Yes
89 (59h) Read Signal Standard
Name Returns the signal standard name in English Yes
96 (60h) Measure OCC BW % of
Power Measures OCC BW with % of Power method Yes
97 (61h) Measure OCC BW dB
Down Measures OCC BW with dB down method Yes
98 (62h) Set Bias Tee Function Set the Bias Tee function On/Off (Option 10 only) Yes
99 (63h) Set Spectrum Analyzer
Start/Stop Frequency Sets the Spectrum Analyzer Start and Stop frequencies Yes
100 (64h) Set Spectrum Analyzer
Center Freq./Span Sets the Spectrum Analyzer center frequency and frequency span Yes
101 (65h) Set Spectrum Analyzer
Scale Sets the Spectrum Analyzer reference level and scale value Yes
4 Spectrum Master PM

Control
Byte # Name Description Watchdog Timer
102 (66h) Set Spectrum Analyzer
Marker Sets position and on/off status of a Spectrum Analyzer marker Yes
103 (67h) Set Spectrum Analyzer
Single Limit Sets position and on/off status of Spectrum Analyzer single limit line Yes
105 (69h) Set Spectrum Analyzer
Peak Hold Enables or disables the Spectrum Analyzer Max and Min Hold features Yes
106 (6Ah) Set Spectrum Analyzer
Resolution Bandwidth Freq Sets the Spectrum Analyzer resolution BW frequency (obsolete) Yes
107 (6Bh) Set Spectrum Analyzer
Video Bandwidth Freq Sets the Spectrum Analyzer video BW frequency (obsolete) Yes
108 (6Ch) Set Spectrum Analyzer
Sweep Mode Sets the Spectrum Analyzer sweep mode Yes
109 (6Dh) Set Spectrum Analyzer
Marker to Peak Sets specified marker to peak value of the sweep Yes
110 (6Eh) Set Spectrum Analyzer
Marker to Center Sets the center frequency equal to the frequency of the specified marker Yes
111 (6Fh) Set Spectrum Analyzer
Attenuation
Sets the attenuation for the Spectrum Master Spectrum Analyzer mode
(obsolete) Yes
113 (71h) Set Spectrum Analyzer
Multiple Limit Sets the position and On/Off Status of a limit segment for the SPA mode Yes
114 (72h) Set Return Spectrum
Analyzer Sweep Time
If this is enabled, the duration of the current sweep (in milliseconds) will be
returned as 4 bytes via the serial port at the end of the sweep Yes
115 (73h) Set Reference Level Offset Sets the value of the reference level offset Yes
116 (74h) Set Spectrum Analyzer
Impedance Sets the impedance and loss (if necessary) for the RF In port Yes
117 (75h) Read Marker Value Returns the frequency location of the specified marker, and the value at that
location Yes
118 (76h) Set Sweep Averaging Sets the number of sweeps to average Yes
130 (82h) Normalize SPA Performs Normalization of SPA graph —-
131 (83h) Set Normalization Status Turns Normalization on or off Yes
133 (85h) Set/Reset SPA External
Reference Sets the external reference frequency for the spectrum analyzer Yes
134 (86h) Check External SPA
Reference Returns the state of the SPA external reference —-
136 (88h) Set SPA Preamp State Sets the state of the SPA preamp Yes
140 (8Ch) Set SPA Units Sets the scale type (logarithmic or linear) and the units Yes
141 (8Dh) Set SPA Resolution
Bandwidth Sets the resolution BW frequency for the Spectrum Analyzer Yes
142 (8Eh) Set SPA Video Bandwidth Sets the video BW frequency for the Spectrum Analyzer Yes
143 (8Fh) Set SPA Attenuation Sets the attenuation for the Spectrum Analyzer Yes
145 (91h) Set AM/FM Demod Sets the AM/FM/SSB Demodulation state Yes
197 (C5h) Set Baud Rate Sets the serial communication baud rate for this session Yes
198 (C6h) Set Language Sets the Spectrum Master display language Yes
208 (D0h) Query Time Queries the Spectrum Master for the current time in ASCII format —-
225 (E1h) Read ASCII Serial Number Returns the ASCII Serial Number as four bytes Yes
Spectrum Master PM 5