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PUPPI IF Amp. Controller Commands

Document No. PUPPI001, Rev. 001

PUPPI IF Amp. Controller Commands Luis Quintero, Arecib o Observatory 1 Intro duction

The B command is used to set the attenuator B: Command: ATNBxx, where

xx: Attenuator value, 00<=x<=31 All the commands must start with the same header (ATN - case sensitive) to be recognized by the controller. The Response: atnok attenuator values must be between 00 (0dB ) and 31 (15.5dB ) (two characters format). The examples below Example: show commands from the computer to the device >>, and >> ATN? the the device response <<. All command and responses << atnm0102 terminate with Carriage Return (CR - \r - 0x0d). >> ATNB31 << atnok 2 Commands >> ATN? << atnm0131 The status request ? command will return the actual configuration values of the A (VATN11 ) and B (VATN2) You can use the M command if you want to configure channels. If the controller is restarted/power-cycled, multiple attenuators with one command: these values correspond to the default values stored in the EEPROM memory. This is the command syntax: Command: ATNMAABB, where Command: ATN? Response: atnmAABB, where atn: lower case header m: multiple attenuators display AA: atten. value of A BB: atten. value of B Example (0dB channel A, 15.5dB channel B): >> ATN? << atnm0031 >> << >> << ATNM0123 atnok ATN? atnm0123 M: multiple attenuators AA: value of atten. A BB: value of atten. B Response: atnok Example:

You can use the R command to print out default configThe W command is used if you want to store your actual uration (EEPROM) of the device: configuration as default (EEPROM): Command: ATNR Response: atnrAABB, where Command: ATNW Example (0.5dB channel A, 1.0dB channel B): Response: atnok >> ATNR << atnr0102 Example: The A command is used to set the attenuator A: Command: ATNAxx, where xx: Attenuator value, 00<=x<=31 Response: atnok Example: >> << >> << >> <<
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>> << >> << >> << >> <<

ATNR atnr0123 ATNM3210 atnok ATNW atnok ATNR atnr3210

ATN? atnm0102 ATNA31 atnok ATN? atnm3102

Use the D command to load the default configuration (EEPROM): Command: ATND Response: atnok Example: Page 1 of 2
Release: March 5, 2012

Variable Attenuator, MiniCircuits ZX76-15R5-SP+

Luis Quintero, Arecibo Observatory


PUPPI IF Amp. Controller Commands

Document No. PUPPI001, Rev. 001

>> << >> << >> << 3

ATNR atnr3210 ATND atnok ATN? atnm3210

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Examples · Maximum attenuation (15.5dB ) for tors: ATNM3131 · Minimum attenuation (0dB ) for all ATNM0000 · 12.5dB (25 = 12.5 в 2) attenuation · 4.5dB (9 = 4.5 в 2) attenuation for all the attenuathe attenuators: for A: ATNA25 B: ATNA09

Error co des

The controller is expecting digits after the command character. If there is an error, the device will return an error code 01 (atnERR01). For example: >> << >> << ATNA0a atnERR01 ATNM*&() atnERR01

The controller will return an error code 02 if the attenuator configuration is out of range (between 0 and 31). Examples: >> << >> >> ATNA99 atnERR02 ATNB70 atnERR03

The attenuator setup command A and B only accepts six (6) characters total. If a different number is provided, the device returns an error code 06. For example: >> << >> << ATNA0 atnERR06 ATNB111 atnERR06

If you are trying to use the M command, and do not provide all the parameters (8 characters - 2 в 2 + 4), the device will return an error code 07: >> ATNM012 << atnERR07 The M command also returns an error code 03 if one of the attenuator values is out of range: >> ATNM0033 << atnERR03 If the command has the ATN header, but not command at all, the controller will return an error code 05. Commands related to EEPROM, information and default configuration require four characters. For example: >> ATN << atnERR05 Finally, if the command does not exits, the device will return an error code 04: >> ATNT << atnERR04 Luis Quintero, Arecibo Observatory Page 2 of 2
Release: March 5, 2012