Stanford Research Systems RGA100, Руководство по эксплуатации и программированию

Страница: 135 / 362

Initialization Commands 6-31
SRS Residual Gas Analyzer
Command excecution times vary depending on the pre-existing ionizer
conditions. The end of the command excecution is prompted to the host computer
returning the STATUS byte over RS232.
Parameters:
IN0: Initialize communications and check the ECU hardware.
x
The input and output data buffers are emptied (all communications are
disabled while this happens).
x
Bit 0 of STATUS and RS232_ERR are cleared
x
A fresh check of the ECU hardware, including the 24V P/S, the Electrometer
and the QMF RF P/S, is performed and the necessary error bytes are updated.
IN1: Reset the RGA to its factory default settings.
In addititon to the above, the RGA is reprogrammed to its default (i.e. Factory
preferred) values:
x
Total Pressure measurement. is enabled: TP_Flag =1
x
Default parameter settings are selected for: MI (1), MF (M_MAX), SA
(10), NF (4), IE (1), EE (70), and VF (90).
x
The filament’’s electron emission setting is left unmodified and the
ionizer is biased to default voltages if necessary.
IN2 : Activate Standby mode.
In addition to the above:
x
The filament and the CDEM are turned off.
Error Checking:
The command accepts no default or query parameter values.
The absence of a parameter is treated as a bad-parameter error.