10-3-B. Taking Out Data
In the TSL-210, the method to retrieve data differs between GP-IB and RS-232C. Explana-
tions on how to take data out per each communication protocol are outlined below:
1. GP-IB
When a command is executed, the output data changes. At the next data request, data is auto-
matically selected and output. For example, when retrieving wavelength data, send the wave-
length tuning command, or send the command with the addition of data. Until the next output
data change command is sent, the TSL-210 sends the current wavelength data to data request.
When an incorrect command is received, the TSL-210 outputs “NR” to the next data request;
when the correct command is received, the TSL-210 stops outputting “NR”, and begins
responding to the new command.
2. RS-232C
When a command is executed, output data changes. At the next data request, data is automati-
cally selected and output. For example, when retrieving wavelength data, send the wavelength
tuning command, or send the command with the addition of data. Until the next output data
change command is sent, the TSL-210 sends the current wavelength data to data request. When
an incorrect command is received, the TSL-210 outputs “NR” as an echo back, but when
a correct command is received, it echoes back two letter characters. Different from GP-IB,
RS-232C uses a command (DI) without echo back for data request. The data input after trans-
mission of the DI command is the current output available.
Command (DI) and (SU) do not return echo back.
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