Teledyne 100AH instruction manual Summary of Diagnostic Modes, 10-12, Diag Mode Description

Teledyne API Model 100AH SO2 Analyzer Instruction Manual, 02417, Rev. D

Table 10-3: Summary of Diagnostic Modes

DIAG Mode	Description
SIGNAL I/O	Gives access to the digital and analog inputs and outputs on the V/F
	board. The status or value of all of the signals can be seen. Some of
	the signals can be controlled from the keyboard. Table 10-4gives
	details on each signal and information on control capabilities.
	NOTE: Some signals can be toggled into states that indicate
	warnings or other faults. These settings will remain in effect until
	DIAG mode is exited, then the M100AH will resume control over
	the signals.
ANALOG OUTPUT	Causes a test signal to be written to the analog output DAC's. The
	signal consists of a scrolling 0%, 20%, 40%, 60%, 80%, 100% of
	the analog output value. The scrolling may be stopped by pressing
	the key underneath the % display to hold that value. The exact
	voltage values depend on the jumper settings on the analog output
	buffer amplifiers.
DAC CALIBRATION	The analog output is created by 4 digital-to-analog converters. This
	selection starts a procedure to calibrate these outputs. Refer to
	Section 10.3.2.1 for a detailed procedure.
OPTICAL TEST	Sets the M100AH into a known state and turns on an LED near the
	PMT to test the instrument signal path. See Section 10.1.3.3 for
	details on using this test.
ELECTRICAL TEST	Tests just the electronic portion of the PMT signal path. Used in
	conjunction with optic test, see Section 10.1.3.2.
LAMP CAIBRATION	This feature allows to update the Lamp Calibration value. Displayed
	value is the current lamp intensity and pressing ENTR key will
	update the Lamp Calibration value. Refer Section 10.4.2 for UV
	Lamp adjustment. See also Section 10.1.6 Factory Calibration
	Procedure.
FLOW CALIBRATION	This feature allows to enter the actual sample flow. Once the flow is
	calibrated, it will compute the flow automatically from the pressure
	measurements. Refer Section 10.3.5.
TEST CHANNEL	This feature allows to output scaled voltage of most test
OUTPUT	measurement through the analog output terminal. Refer
	Section 10.1.5.
RS-232	Causes a 1 second burst of data to be transmitted from the RS-232
	port. Used to diagnose RS-232 port problems. See Sections 10.1.3.6
	and 4.3.1.2 for RS-232 port diagnostic techniques.

10-12