Arbiter Systems 931A, Operation Manual

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A.3.10 Data Dump, Bitmapped (DDB)
Command:
DDB
Screen dump in bitmap format
Response: Enables XMODEM binary file-transfer protocol-CRC only.
May be sent by host computer prior to initiating transfer request. Sus-
pends normal instrument operation pending file transfer.
The file consists of
≈
2110 8-bit bytes including 62 bytes of header
information and 2048 bytes of graphics data. The header describes the
picture as monochrome, 32 bytes per row, 240 pixels per row and 64 rows.
This data, when stored as a file, may be imported into most PC word
processing, drawing or painting programs.
A.3.11 Store Calibration Data in EEPROM (EEP)
Command:
mmddyyEEP
Stores Calibration Data currently residing in RAM to EEPROM using a
Hamming-Code. Sets Calibration Date to the current date. MM DD YY
is the current date.
A.3.12 DSP Frequency Calibrate (FRD)
Command:
c#,s/r#FRD
Sets or returns the Calibration Constant to correct the DSP frequency.
1 + (c#
÷
1,000,000) multiplies the frequency measurements made by the
DSP.
c# Frequency Calibration Constant
s/r# Action
0 Set Calibration Constant
1 Return Calibration Constant
Return format: Numeric ASCII string.
A.3.13 Frequency, Return (FRQ)
Command:
#FRQ
Returns the frequency of the input signal selected for Channel 1. Use
CHANNEL 1 SELECT (#CHS) to select the desired input.
Response: Numeric ASCII string.
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