MKS PDR 2000 - Serial Interface; Table 6: Analog Output and Displayed Pressure

41
0.016 mTorr (µBar)
0.10
0.10 mTorr (µBar) 0.50
0.20 mTorr (µBar) 0.65
1.0 mTorr (µBar) 1.00
1.58 mTorr (µBar) 1.10
10.0 mTorr (µBar) 1.50
100 mTorr (µBar) 2.00
1.00 Torr (mBar) 2.50
10.0 Torr (µBar) 3.00
100 Torr (mBar) 3.50
999 Torr (mBar) 4.00
10.00 kTorr (mBar) 4.50
OFF
5.00
Table 6: Analog Output and Displayed Pressure
The pressure as a function of the Analog Output voltage is:
P=0.01*log
-1 (2V)
or
P=0.01*10
(2V)
Note
The analog output is valid for the gauge that is selected on the display.
Serial Interface
The RS-232 serial port gives pressure readings when requested by the terminal. The interface is standard
RS-232 format: 9600 baud, 8-bits, no parity, 1 stop bit. The interface is through the 15-pin D-sub
accessory connector.
• Pin 7 is Tx (signal from the PDR 2000 to the terminal)
• Pin 8 is Rx (signal from the terminal to the PDR 2000)
• Pin 9 is return (ground).
The serial port allows reading pressure and other parameters of the PDR 2000; it is not possible to
modify stored parameters over the serial port.