1) Enter remote mode. Set Serial Port Echo Mode On. Exit remote mode.
2) The Spectrum Master sweeps once and then sends the Sweep Complete Byte.
3) After you receive it. Enter remote mode. Recall sweep 0 (last sweep trace in RAM).
4) Exit remote mode. Send Sweep Triggering Byte #48 (30h) and wait for the next sweep cycle.
5) Repeat steps 2-4
Bytes to Follow: 1 byte
1) Serial Port Echo Status
00h = Off
01h = On
Spectrum Master Returns: 1 byte
1)
255 (FFh) Operation Complete Byte
224 (E0h) Parameter Error : Invalid serial port echo status
238 (EEh) Time-out Error
Watch-Dog Timer On/Off – Control Byte #12 (0Ch)
Description: Enables or disables the Watch-dog timer. Default is Disabled.
The Spectrum Master incorporates a watch-dog timer for higher reliability in serial communication. In selected control bytes
(see Control Byte Summary), the Spectrum Master checks for the time interval between each byte received from the
computer. If the time interval exceeds the set time limit (0.5 sec), the Spectrum Master notifies the computer by sending
Time-out Byte #238 (EEh). The Spectrum Master discards the data it just received and then waits for the next control byte
sequence.
Bytes to Follow: 1 byte
1) Watch-dog timer On/Off
00h = Off
01h = On
Spectrum Master Returns: 1 byte
1)
255 (FFh) Operation Complete Byte
224 (E0h) Parameter Error : Invalid watch-dog timer status
Store Sweep Trace – Control Byte #16 (10h)
Description: Saves current trace to the next available memory location. Trace name can be set using control byte #9, "Set
Reference Number" before executing this command.
Bytes to Follow: 0 bytes
Spectrum Master Returns: 5 bytes
1-4) Time/Date Stamp (In long integer format)
5)
Operation result:
255 (FFh) Operation Complete Byte
224 (E0h) Out of memory (Memory full)
238 (EEh) Time-out Error
Spectrum Master PM
9
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