Optoelectronics X Sweeper Specification Interface Version 1.1

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Page 1

Optoelectronics, Inc.

X Sweeper

Serial Interface Specification

Interface Version 1.1

October 28, 2003

Page 2

INTRODUCTION

This document describes the serial interface of the X Sweeper, a hand-held test receiver with a graphical spectrum display capable of sweeping and locking on to near-field FM VHF and UHF transmissions. The X Sweeper is capable of capturing and storing up to 100 frequencies in each of 10 memory banks, along with the number of occurrences, or hits, of each frequency, the signal strength, the lockout status, the time and date the frequency was last detected, and the latitude and longitude of the X Sweeper when the frequency was last detected (optional internal or external GPS required). In addition, the X Sweeper can log over 1900 events, each containing frequency, signal strength, time and date, and latitude and longitude. This data can then be downloaded to a personal computer for storage and analysis. The X Sweeper can be remotely controlled by a host computer via the serial interface.

This document was written to assist the programmer in developing software applications for the X Sweeper. Optoelectronics, Inc. assumes no responsibility for the accuracy of the information contained in this document, and is under no obligation to provide technical support on matters pertaining to this document, or to provide notification of changes or corrections to this document. To inquire about possible revisions, or to order copies of this document, contact the factory. A nominal fee may be charged to cover printing and shipping costs.

OPTOELECTRONICS, INC.

5821 N.E. 14th Avenue

Fort Lauderdale, FL 33334

Phone: (954) 771-2050

FAX: (954) 771-2052

www.optoelectronics.com

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ABOUT THE INTERFACE

Unlike previous Optoelectronics products, the command structure of the X Sweeper serial interface is not based on the Icom CI-V standard. Instead, a new ASCII command set was developed to provide full control of the instrument, as well as the ability to download data stored in memory. A primary advantage of this new command scheme is that the X Sweeper can be tested under remote control using a personal computer running a common terminal emulator program, such as HyperTerminal.

The X Sweeper serial interface is full-duplex with RS-232C compatible voltage levels. The communications parameters for the serial interface are listed in Table 1 below.

Table 1. Communications Parameters.

DATA RATE START BITS DATA BITS PARITY STOP BITS

To connect the X Sweeper to a personal computer, a miniature (3.5 mm) stereo phone jack is provided on the top panel. The X Sweeper receives commands on the RING terminal and transmits responses on the TIP terminal of the stereo phone jack. Signal ground is provided on the SHIELD terminal of the phone jack. Since the X Sweeper serial interface is compatible with RS-232C voltage levels, no external interface converter box is required to connect the X Sweeper to a standard personal computer COM port. An interface cable for connecting the X Sweeper to a PC is available.

For ReactionTune applications, a subminiature (2.5 mm) phone jack is provided on the top panel. The TIP terminal provides the TTL equivalent of the RS-232 transmit data signal to drive ReactionTune-capable receivers. Signal ground is provided on the SHIELD terminal of the phone jack.

19,200 bps 1 8 NONE 1

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COMMAND REFERENCE

The X Sweeper accepts commands over the serial interface when the INTERFACE TYPE is set to REMOTE CONTROL from the front panel. In this section, all command and response bytes are expressed as ASCII characters. The X Sweeper recognizes 35 different commands, which are summarized in Table 2 below.

The X Sweeper processes commands one at a time. After a command is issued, the host computer must wait for the complete response before transmitting a new command. Any further command characters transmitted while a previous command is being processed will be discarded.

Following the command summary table is a detailed description of each of the commands, including examples illustrating their use.

Table 2. X Sweeper Remote Control Command Summary.

COMMAND DESCRIPTION

AF Active Frequency

AH Auto-Hold

AS Auto-Skip BK Bank CB Clear Bank

CF Center Frequency

CL Clear Log Memory DB Display Backlight DC Display Contrast

DP Display Polarity

FD Frequency Display

FS Frequency Span

HD Hold

ID Identification LC Log Memory Coordinates LF Log Memory Frequency

LM Log Memory LO Lockout

LS Log Memory Signal Strength LT Log Memory Time/Date

MC Memory Coordinates

MD Mode

MF Memory Frequency MH Memory Hits ML Memory Lockout Status

MS Memory Signal Strength MT Memory Time/Date MY Memory

SG Signal Strength SH Signal/Hits Display SK Skip

SP Setup Parameter

SQ Squelch Status

TD Time/Date

VF VFO Frequency

Page 5

ACTIVE FREQUENCY

Format:

COMMAND RESPONSE AF?<CR> AFffff.ffffff<CR>

Examples:

COMMAND RESPONSE

Read Active Frequency

AF?<CR>

Description:

This command reads the current ACTIVE FREQUENCY.

The FREQUENCY data (ffff.ffffff) is in the form of 11 characters, including decimal point, and represents the frequency in megahertz. The specified FREQUENCY must be in the range 30 MHz to 3 GHz.

If the command length is incorrect, then the command is ignored, and the ERROR response is returned. See the examples shown above.

162.475 MHz

AF0162.475000<CR>

Page 6

AUTO-HOLD

Format:

COMMAND RESPONSE AH?<CR> AHa<CR> AHa<CR> OK<CR>

Examples:

COMMAND RESPONSE

Read Auto-Hold Setting

AH?<CR>

Select Auto-Hold Enabled

AH1<CR>

Select Invalid Auto-Hold Setting

AH2<CR>

Description:

This command either reads or selects the AUTO-HOLD setting.

The AUTO-HOLD data (a) is in the form of 1 character in the range 0 to 1. The AUTO-HOLD values are as follows:

0 = Auto-Hold Disabled 1 = Auto-Hold Enabled

If the command length is incorrect, or if the specified AUTO-HOLD value is out of range, then the command is ignored, and the ERROR response is returned. See the examples shown above.

Auto-Hold Disabled

AH0<CR>

Command Accepted

OK<CR>

Command Error

ERROR<CR>

Page 7

AUTO-SKIP

Format:

COMMAND RESPONSE AS?<CR> ASa<CR> ASa<CR> OK<CR>

Examples:

COMMAND RESPONSE

Read Auto-Skip Setting

AS?<CR>

Select Auto-Skip Enabled

AS1<CR>

Select Invalid Auto-Skip Setting

AS2<CR>

Description:

This command either reads or selects the AUTO-SKIP setting.

The AUTO-SKIP data (a) is in the form of 1 character in the range 0 to 1. The AUTO-SKIP values are as follows:

0 = Auto-Skip Disabled 1 = Auto-Skip Enabled

If the command length is incorrect, or if the specified AUTO-SKIP value is out of range, then the command is ignored, and the ERROR response is returned. See the examples shown above.

Auto-Skip Disabled

AS0<CR>

Command Accepted

OK<CR>

Command Error

ERROR<CR>

Page 8

BANK

Format:

COMMAND RESPONSE BK?<CR> BKbb<CR> BKbb<CR> OK<CR>

Examples:

COMMAND RESPONSE

Read Bank

BK?<CR>

Select Bank 0

BK00<CR>

Select Invalid Bank

BK10<CR>

Description:

This command either reads or selects the BANK.

The BANK data (bb) is in the form of 2 characters in the range 00 to 09.

If the command length is incorrect, or if the specified BANK is out of range, then the command is ignored, and the ERROR response is returned. See the examples shown above.

Bank 7

BK07<CR>

Command Accepted

OK<CR>

Command Error

ERROR<CR>

Page 9

CLEAR BANK

Format:

COMMAND RESPONSE CBssssssssssbb<CR> OK<CR>

Examples:

COMMAND RESPONSE

Clear Bank 5

CB781593416705<CR>

Clear Bank 9, Security Code Invalid CB012345678909<CR> Clear Invalid Bank

CB781593416713<CR>

Description:

This command clears all MEMORY locations in the specified BANK. This command has the same effect as clearing the specified BANK from the front panel.

The SECURITY CODE (ssssssssss) is in the form of 10 characters. This unique 10-digit code (7815934167) must be correctly specified to clear the specified BANK.

The specified BANK data (bb) is in the form of 2 characters. The specified BANK must be in the range 00 to 09.

If the command length is incorrect, or if the SECURITY CODE is not valid, or if the specified BANK is out of range, then the command is ignored, and the ERROR response is returned. See the examples shown above.

Command Accepted

OK<CR>

Command Error

ERROR<CR>

Command Error

ERROR<CR>

Page 10

CENTER FREQUENCY

Format:

COMMAND RESPONSE CF?<CR> CFffff.fff<CR> CFffff.fff<CR> OK<CR>

Examples:

COMMAND RESPONSE

Read Center Frequency

CF?<CR>

Write Center Frequency 824.675 MHz

CF0824.675<CR>

Write Invalid Center Frequency 3000.001 MHz

CF3000.001<CR>

Description:

This command either reads or selects the CENTER FREQUENCY.

The CENTER FREQUENCY data (ffff.fff) is in the form of 8 characters, including decimal point, in the range

0000.000 MHz to 3000.000 MHz.

If the command length is incorrect, or if the specified CENTER FREQUENCY is out of range, then the command is ignored, and the ERROR response is returned. See the examples shown above.

445.000 MHz

CF0445.000<CR>

Command Accepted

OK<CR>

Command Error

ERROR<CR>

Page 11

CLEAR LOG MEMORY

Format:

COMMAND RESPONSE CLssssssssss<CR> OK<CR>

Examples:

COMMAND RESPONSE

Clear Log Memory

CL8569204738<CR>

Clear Log Memory, Security Code Invalid

CL0123456789<CR>

Description:

This command clears all LOG MEMORY locations. This command has the same effect as clearing the LOG MEMORY from the front panel.

The SECURITY CODE (ssssssssss) is in the form of 10 characters. This unique 10-digit code (8569204738) must be correctly specified to clear the LOG MEMORY.

If the command length is incorrect, or if the SECURITY CODE is not valid, then the command is ignored, and the ERROR response is returned. See the examples shown above.

Command Accepted

OK<CR>

Command Error

ERROR<CR>

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DISPLAY BACKLIGHT

Format:

COMMAND RESPONSE DB?<CR> DBb<CR> DBb<CR> OK<CR>

Examples:

COMMAND RESPONSE

Read Display Backlight Setting

DB?<CR>

Select Display Backlight Off

DB0<CR>

Select Invalid Display Backlight Setting

DB2<CR>

Description:

This command either reads or selects the DISPLAY BACKLIGHT setting.

The DISPLAY BACKLIGHT data (b) is in the form of 1 character in the range 0 to 1. The DISPLAY BACKLIGHT values are as follows:

0 = Display Backlight Off 1 = Display Backlight On

If the command length is incorrect, or if the specified DISPLAY BACKLIGHT value is out of range, then the command is ignored, and the ERROR response is returned. See the examples shown above.

Display Backlight On

DB1<CR>

Command Accepted

OK<CR>

Command Error

ERROR<CR>

Page 13

DISPLAY CONTRAST

Format:

COMMAND RESPONSE DC?<CR> DCcc<CR> DCcc<CR> OK<CR>

Examples:

COMMAND RESPONSE

Read Display Contrast Setting

DC?<CR>

Select Display Contrast 41

DC41<CR>

Select Invalid Display Contrast Setting

DC64<CR>

Description:

This command either reads or selects the DISPLAY CONTRAST setting.

The DISPLAY CONTRAST data (cc) is in the form of 2 characters in the range 00 to 63.

If the command length is incorrect, or if the specified DISPLAY CONTRAST value is out of range, then the command is ignored, and the ERROR response is returned. See the examples shown above.

Display Contrast 35

DC35<CR>

Command Accepted

OK<CR>

Command Error

ERROR<CR>

Page 14

DISPLAY POLARITY

Format:

COMMAND RESPONSE DP?<CR> DPp<CR> DPp<CR> OK<CR>

Examples:

COMMAND RESPONSE

Read Display Polarity Setting

DP?<CR>

Select Reverse Display Polarity

DP1<CR>

Select Invalid Display Polarity Setting

DP2<CR>

Description:

This command either reads or selects the DISPLAY POLARITY setting.

The DISPLAY POLARITY data (p) is in the form of 1 character in the range 0 to 1. The DISPLAY POLARITY values are as follows:

0 = Display Polarity Normal 1 = Display Polarity Reverse

If the command length is incorrect, or if the specified DISPLAY POLARITY value is out of range, then the command is ignored, and the ERROR response is returned. See the examples shown above.

Display Polarity Normal

DP0<CR>

Command Accepted

OK<CR>

Command Error

ERROR<CR>

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FREQUENCY DISPLAY

Format:

COMMAND RESPONSE FD?<CR> FDd<CR> FDd<CR> OK<CR>

Examples:

COMMAND RESPONSE

Read Frequency Display Setting

FD?<CR>

Select Measured Frequency Display

FD1<CR>

Select Invalid Frequency Display Setting

FD2<CR>

Description:

This command either reads or selects the FREQUENCY DISPLAY setting.

The FREQUENCY DISPLAY data (d) is in the form of 1 character in the range 0 to 1. The FREQUENCY DISPLAY values are as follows:

0 = Channel Frequency Display 1 = Measured Frequency Display

If the command length is incorrect, or if the specified FREQUENCY DISPLAY value is out of range, then the command is ignored, and the ERROR response is returned. See the examples shown above.

Channel Frequency Display

FD0<CR>

Command Accepted

OK<CR>

Command Error

ERROR<CR>

Page 16

FREQUENCY SPAN

Format:

COMMAND RESPONSE FS?<CR> FSs<CR> FSs<CR> OK<CR>

Examples:

COMMAND RESPONSE

Read Frequency Span

FS?<CR>

Select 100 MHz Span

FS6<CR>

Select Invalid Span

FSA<CR>

Description:

This command either reads or selects the FREQUENCY SPAN.

The FREQUENCY SPAN data (s) is in the form of 1 character in the range 0 to 9. The FREQUENCY SPAN values are as follows:

0 = 100 KHz Span 1 = 300 KHz Span 2 = 1 MHz Span 3 = 3 MHz Span 4 = 10 MHz Span 5 = 30 MHz Span 6 = 100 MHz Span 7 = 300 MHz Span 8 = 1000 MHz Span 9 = 3000 MHz Span

If the command length is incorrect, or if the specified FREQUENCY SPAN is out of range, then the command is ignored, and the ERROR response is returned. See the examples shown above.

300 KHz Span

FS1<CR>

Command Accepted

OK<CR>

Command Error

ERROR<CR>

Page 17

HOLD

Format:

COMMAND RESPONSE HD?<CR> HDh<CR> HD<CR> OK<CR>

Examples:

COMMAND RESPONSE

Read HOLD function

HD?<CR>

Enable HOLD function (SWEEP mode)

HD<CR>

Toggle HOLD function (SCAN mode)

HD<CR>

Invalid HOLD function (other mode)

HD<CR>

Description:

This command reads, enables, or toggles the HOLD function, depending on the current operating MODE. This command is only valid in either SWEEP or SCAN mode.

The HOLD data (h) is in the form of 1 character in the range 0 to 1. The HOLD values are as follows:

0 = Hold Disabled 1 = Hold Enabled

If SWEEP mode is selected, then HOLD is enabled. If SCAN mode is selected, then HOLD is toggled.

If the command length is incorrect, or if neither SWEEP nor SCAN mode is selected, then the command is ignored, and the ERROR response is returned. See the examples shown above.

HOLD function enabled

HD1<CR>

Command Accepted

OK<CR>

Command Accepted

OK<CR>

Command Error

ERROR<CR>

Page 18

IDENTIFICATION

Format:

COMMAND RESPONSE ID?<CR> IDpppddrrii<CR>

Examples:

COMMAND RESPONSE

Read Identification Information

ID?<CR>

Description:

This command reads the IDENTIFICATION information.

The PRODUCT data (ppp) is in the form of 3 characters, which uniquely identify the product as follows: XSW = X Sweeper

The DIGITAL BOARD VERSION data (dd) is in the form of 2 characters in the range 00 to 99, which indicate the current Digital Board software version.

The RF BOARD VERSION data (rr) is in the form of 2 characters in the range 00 to 99, which indicate the current RF Board software version.

The INTERFACE VERSION data (ii) is in the form of 2 characters in the range 00 to 99, which indicate the current Serial Interface version.

If the command length is incorrect, then the command is ignored, and the ERROR response is returned. See the examples shown above.

X Sweeper, Digital Board version 1.8, RF Board version 1.3, Interface version 1.1

IDXSW181311<CR>

Page 19

LOG MEMORY COORDINATES

Format:

COMMAND RESPONSE LCmmmmm?<CR> LCaa:bb.bbc,ddd:ee.eef<CR>

Examples:

COMMAND RESPONSE

Read Coordinates from Log Memory 0

LC00000?<CR>

Read Coordinates from Log Memory 1378 LC01378?<CR> Read Coordinates from Invalid Log Memory

LC22459?<CR>

Description:

This command reads the COORDINATES stored in the specified LOG MEMORY location.

The specified LOG MEMORY data (mmmmm) is in the form of 5 characters. The specified LOG MEMORY must be in the range 00000 to 01918.

The LATITUDE DEGREES data (aa) is in the form of 2 characters in the range 00 to 90.

The LATITUDE MINUTES data (bb.bb) is in the form of 5 characters, including decimal point, in the range 00.00 to 59.99.

The LATITUDE HEMISPHERE data (c) is in the form of 1 character, where ‘N’ represents North Latitude, and ‘S’ represents South Latitude.

The LONGITUDE DEGREES data (ddd) is in the form of 3 characters in the range 000 to 180.

The LONGITUDE MINUTES data (ee.ee) is in the form of 5 characters, including decimal point, in the range 00.00 to 59.99.

The LONGITUDE HEMISPHERE data (f) is in the form of 1 character, where ‘E’ represents East Longitude, and ‘W’ represents West Longitude.

If the command length is incorrect, or if the specified LOG MEMORY is out of range, then the command is ignored, and the ERROR response is returned. See the examples shown above.

27 Deg., 48.92 Min. N., 86 Deg., 12.45 Min., W.

LC27:48.92N,086:12.45W<CR>

10 Deg., 31.05 Min. S., 143 Deg., 58.22 Min., E.

LC10:31.05S,143:58.22E<CR>

Command Error

ERROR<CR>

Page 20

LOG MEMORY FREQUENCY

Format:

COMMAND RESPONSE LFmmmmm?<CR> LFffff.ffffff<CR>

Examples:

COMMAND RESPONSE

Read Frequency from Log Memory 37

LF00037?<CR>

Read Frequency from Log Memory 1918

LF01918?<CR>

Read Frequency from Invalid Log Memory

LF02561?<CR>

Description:

This command reads the FREQUENCY stored in the specified LOG MEMORY location.

The specified LOG MEMORY data (mmmmm) is in the form of 5 characters. The specified LOG MEMORY must be in the range 00000 to 01918.

The FREQUENCY data (ffff.ffffff) is in the form of 11 characters, including decimal point, and represents the frequency in megahertz. The specified FREQUENCY must be in the range 30 MHz to 3 GHz.

If the command length is incorrect, or if the specified LOG MEMORY is out of range, then the command is ignored, and the ERROR response is returned. See the examples shown above.

162.475 MHz

LF0162.475000<CR>

445.8125 MHz

LF0445.812500<CR>

Command Error

ERROR<CR>

Page 21

LOG MEMORY

Format:

COMMAND RESPONSE LM?<CR> LMmmmmm<CR> LMmmmmm<CR> OK<CR>

Examples:

COMMAND RESPONSE

Read Log Memory

LM?<CR>

Read Log Memory

LM?<CR>

Select Log Memory 1862

LM01862<CR>

Select Invalid Memory

LM01919<CR>

Description:

This command either reads or selects the LOG MEMORY location.

The specified LOG MEMORY data (mmmmm) is in the form of 5 characters in the range 00000 to 01918, or to the highest non-empty log memory location, whichever is less.

If the command length is incorrect, or if the specified LOG MEMORY is out of range, then the command is ignored, and the ERROR response is returned. See the examples shown above.

Memory 8

LM00008<CR>

Memory 837

LM00837<CR>

Command Accepted

OK<CR>

Command Error

ERROR<CR>

Page 22

LOCKOUT

Format:

COMMAND RESPONSE LO<CR> OK<CR>

Examples:

COMMAND RESPONSE

Initiate LOCKOUT function (SWEEP, SCAN, or MEMORY mode)

LO<CR>

Invalid LOCKOUT function (other mode)

LO<CR>

Description:

This command initiates the LOCKOUT function. This command is only valid in SWEEP, SCAN, or MEMORY mode.

In SWEEP mode, a LOCKOUT locks out the active frequency, clears the HOLD function, and resumes sweeping. In SCAN mode, a LOCKOUT locks out the active frequency, and resumes scanning. In MEMORY mode, a LOCKOUT toggles the LOCKOUT status of the currently selected MEMORY in the currently selected BANK.

If the command length is incorrect, or if SWEEP, SCAN, or MEMORY mode is not selected, then the command is ignored, and the ERROR response is returned. See the examples shown above.

Command Accepted

OK<CR>

Command Error

ERROR<CR>

Page 23

LOG MEMORY SIGNAL STRENGTH

Format:

COMMAND RESPONSE LSmmmmm?<CR> LSss<CR>

Examples:

COMMAND RESPONSE

Read Signal Strength from Log Memory 185

LS00185?<CR>

Read Signal Strength from Log Memory 614

LS00614?<CR>

Read Signal Strength from Invalid Log Memory

LS95637?<CR>

Description:

This command reads the SIGNAL STRENGTH stored in the specified LOG MEMORY location.

The specified LOG MEMORY data (mmmmm) is in the form of 5 characters. The specified LOG MEMORY must be in the range 00000 to 01918.

The SIGNAL STRENGTH data (ss) is in the form of 2 characters in the range 00 to 50, and represents the number of bargraph segments displayed.

If the command length is incorrect, or if the specified LOG MEMORY is out of range, then the command is ignored, and the ERROR response is returned. See the examples shown above.

38 Bargraph Segments

LS38<CR>

43 Bargraph Segments

LS43<CR>

Command Error

ERROR<CR>

Page 24

LOG MEMORY TIME / DATE

Format:

COMMAND RESPONSE LTmmmmm?<CR> LThh:mm:ss,w,nn-dd-yyyy<CR>

Examples:

COMMAND RESPONSE

Read Time/Date from Log Memory 16

LT00016?<CR>

Read Time/Date from Log Memory 1506 LT01506?<CR> Read Time/Date from Invalid Log Memory

LT32589?<CR>

Description:

This command reads the TIME/DATE stored in the specified LOG MEMORY location.

The specified LOG MEMORY data (mmmmm) is in the form of 5 characters. The specified LOG MEMORY must be in the range 00000 to 01918.

The HOURS data (hh) is in the form of 2 characters in 24-hour time format in the range 00 to 23.

The MINUTES data (mm) is in the form of 2 characters in the range 00 to 59.

The SECONDS data (ss) is in the form of 2 characters in the range 00 to 59.

The WEEKDAY data (w) is in the form of 1 character in the range 0 to 6, where 0 represents Sunday.

The MONTH data (nn) is in the form of 2 characters in the range 01 to 12.

The DAY data (dd) is in the form of 2 characters in the range 01 to 31.

The YEAR data (yyyy) is in the form of 4 characters in the range 2000 to 2099.

If the command length is incorrect, or if the specified LOG MEMORY is out of range, then the command is ignored, and the ERROR response is returned. See the examples shown above.

16:50:14, Thursday ,June 26, 2003

LT16:50:14,4,06-26-2003<CR>

8:13:58, Sunday ,May 4, 2003

LT08:13:58,0,05-04-2003<CR>

Command Error

ERROR<CR>

Page 25

MEMORY COORDINATES

Format:

COMMAND RESPONSE MCbbmmm?<CR> MCaa:bb.bbc,ddd:ee.eef<CR>

Examples:

COMMAND RESPONSE

Read Coordinates from Bank 0, Memory 0

MC00000?<CR>

Read Coordinates from Bank 9, Memory 78 MC09078?<CR> Read Coordinates from Invalid Bank

MC31085?<CR>

Description:

This command reads the COORDINATES stored in the specified BANK and MEMORY.

The specified BANK data (bb) is in the form of 2 characters. The specified BANK must be in the range 00 to 09.

The specified MEMORY data (mmm) is in the form of 3 characters. The specified MEMORY must be in the range 000 to 099.

The LATITUDE DEGREES data (aa) is in the form of 2 characters in the range 00 to 90.

The LATITUDE MINUTES data (bb.bb) is in the form of 5 characters, including decimal point, in the range 00.00 to 59.99.

The LATITUDE HEMISPHERE data (c) is in the form of 1 character, where ‘N’ represents North Latitude, and ‘S’ represents South Latitude.

The LONGITUDE DEGREES data (ddd) is in the form of 3 characters in the range 000 to 180.

The LONGITUDE MINUTES data (ee.ee) is in the form of 5 characters, including decimal point, in the range 00.00 to 59.99.

The LONGITUDE HEMISPHERE data (f) is in the form of 1 character, where ‘E’ represents East Longitude, and ‘W’ represents West Longitude.

If the command length is incorrect, or if the specified BANK is out of range, or if the specified MEMORY is out of range, then the command is ignored, and the ERROR response is returned. See the examples shown above.

27 Deg., 48.92 Min. N., 86 Deg., 12.45 Min., W.

MC27:48.92N,086:12.45W<CR>

10 Deg., 31.05 Min. S., 143 Deg., 58.22 Min., E.

MC10:31.05S,143:58.22E<CR>

Command Error

ERROR<CR>

Page 26

MODE

Format:

COMMAND RESPONSE MD?<CR> MDm<CR> MDm<CR> OK<CR>

Examples:

COMMAND RESPONSE

Read Mode

MD?<CR>

Read Mode

MD?<CR>

Select VFO Mode

MD3<CR>

Select Invalid Mode

MD7<CR>

Description:

This command either reads or selects the MODE.

The MODE data (m) is in the form of 1 character in the range 0 to 6. The MODE values are as follows:

0 = SWEEP Mode 1 = SCAN Mode 2 = MEMORY Mode 3 = VFO Mode 4 = GPS Mode 5 = LOG MEMORY Mode 6 = SETUP Mode

If the command length is incorrect, or if the specified MODE is out of range, then the command is ignored, and the ERROR response is returned. See the examples shown above.

SWEEP Mode

MD0<CR>

MEMORY Mode

MD2<CR>

Command Accepted

OK<CR>

Command Error

ERROR<CR>

Page 27

MEMORY FREQUENCY

Format:

COMMAND RESPONSE MFbbmmm?<CR> MFffff.ffffff<CR> MFbbffff.ffffff<CR> OK<CR>

Examples:

COMMAND RESPONSE

Read Frequency from Bank 2, Memory 37

MF02037?<CR>

Read Frequency from Invalid Bank

MF23076?<CR>

Write Frequency 442.6875 MHz to Bank 8

MF080442.687500<CR>

Write Invalid Frequency 26.450 MHz to Bank 5

MF050026.450000<CR>

Description:

This command either reads the FREQUENCY stored in the specified BANK and MEMORY, or writes the specified FREQUENCY to the next available MEMORY in the specified BANK.

The specified BANK data (bb) is in the form of 2 characters. The specified BANK must be in the range 00 to 09.

The specified MEMORY data (mmm) is in the form of 3 characters. The specified MEMORY must be in the range 000 to 099.

The FREQUENCY data (ffff.ffffff) is in the form of 11 characters, including decimal point, and represents the frequency in megahertz. The specified FREQUENCY must be in the range 30 MHz to 3 GHz.

If the command length is incorrect, or if the specified BANK is out of range, or if the specified MEMORY is out of range, or if the specified FREQUENCY is out of range, or if the specified BANK is full, then the command is ignored, and the ERROR response is returned. See the examples shown above.

162.475 MHz

MF0162.475000<CR>

Command Error

ERROR<CR>

Command Accepted

OK<CR>

Command Error

ERROR<CR>

Page 28

MEMORY HITS

Format:

COMMAND RESPONSE MHbbmmm?<CR> MHhhhhh<CR>

Examples:

COMMAND RESPONSE

Read Hits from Bank 6, Memory 42

MH06042?<CR>

Read Hits from Invalid Bank

MH26081?<CR>

Description:

This command reads the HITS stored in the specified BANK and MEMORY.

The specified BANK data (bb) is in the form of 2 characters. The specified BANK must be in the range 00 to 09.

The specified MEMORY data (mmm) is in the form of 3 characters. The specified MEMORY must be in the range 000 to 099.

The HITS data (hhhhh) is in the form of 5 characters, and represents the number of HITS in the range 0 to 65,535.

6,158 Hits

MH06158<CR>

Command Error

ERROR<CR>

Page 29

MEMORY LOCKOUT STATUS

Format:

COMMAND RESPONSE MLbbmmm?<CR> MLs<CR>

Examples:

COMMAND RESPONSE

Read Lockout Status from Bank 4, Memory 0

ML04000?<CR>

Read Lockout Status from Bank 7, Memory 99 ML07099?<CR> Read Lockout Status from Invalid Bank

ML21032?<CR>

Description:

This command reads the LOCKOUT STATUS stored in the specified BANK and MEMORY.

The specified BANK data (bb) is in the form of 2 characters. The specified BANK must be in the range 00 to 09.

The specified MEMORY data (mmm) is in the form of 3 characters. The specified MEMORY must be in the range 000 to 099.

The LOCKOUT STATUS data (s) is in the form of 1 character, where ‘0’ indicates that the associated frequency is not locked out, and ‘1’ indicates that the associated frequency is locked out.

Not Locked Out

ML0<CR>

Locked Out

ML1<CR>

Command Error

ERROR<CR>

Page 30

MEMORY SIGNAL STRENGTH

Format:

COMMAND RESPONSE MSbbmmm?<CR> MSss<CR>

Examples:

COMMAND RESPONSE

Read Signal Strength from Bank 1, Memory 5

MS01005?<CR>

Read Signal Strength from Invalid Bank

MS20013?<CR>

Description:

This command reads the SIGNAL STRENGTH stored in the specified BANK and MEMORY.

The specified BANK data (bb) is in the form of 2 characters. The specified BANK must be in the range 00 to 09.

The specified MEMORY data (mmm) is in the form of 3 characters. The specified MEMORY must be in the range 000 to 099.

The SIGNAL STRENGTH data (ss) is in the form of 2 characters in the range 00 to 50, and represents the number of bargraph segments displayed.

38 Bargraph Segments

MS38<CR>

Command Error

ERROR<CR>

Page 31

MEMORY TIME / DATE

Format:

COMMAND RESPONSE MTbbmmm?<CR> MThh:mm:ss,w,nn-dd-yyyy<CR>

Examples:

COMMAND RESPONSE

Read Time/Date from Bank 2, Memory 6

MT02006?<CR>

Read Time/Date from Bank 9, Memory 30 MT09030?<CR> Read Time/Date from Invalid Bank

MT25001?<CR>

Description:

This command reads the TIME/DATE stored in the specified BANK and MEMORY.