35
Interfacing (continued)
T
he RS232 communications parameters on the computer or printer need to be set to match those of
the Model 3520, as detailed below:
1200 Baud
9600 Baud
7 Data Bits
8 data bits
Odd Parity
OR
No parity
1 Stop Bit
1 stop bit
Setting of these options is detailed in Section 3.6.6.
The Model 3520 supports both hardware (CTS/RTS) flow control and software XON/XOFF flow con-
trol.
Pressing the PRINT key outputs from the RS232 interface.
Sending an ASCII “D” to the 3520 causes a printout of the current displayed reading plus sample
number.
Sending an ASCII “C” causes a printout of the last calibration parameters.
Sending an ASCII "P" causes a printout of the stored readings.
6.3 Keypad Emulation
Keypad remote control using RS232 interface:
7
- Instrument On / Standby / Escape
1
- Calibrate / Memory Clear
9
8
- Up Arrow
2
- Down Arrow
4
- Left Arrow
6
- Right Arrow
3 or 5
- Enter / Store
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