Teledyne T200 Operation Manual page 311

Teledyne API – T200 NO/NO
Note
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13.3.3.7. I C DATA BUS
13.3.3.8. POWER-UP CIRCUIT
06858E DCN7057
/NO Analyzer Operation Manual
2 X
OPTICAL TEST (OTEST) CONTROL: When the CPU sets this control signal to
high (ON) the optical test feature is initiated (see Section 8.3).

The OTEST can be initiated by following the procedure in 12.7.12.1, or by setting
the SIGNAL I/O Function OPTIC_TEST to ON.
PMT PREAMPLIFIER RANGE CONTROL: The CPU uses this control switch the
instrument between its LOW and HIGH physical ranges (see Section 5.4.1).

The instrument can be forced into its HIGH physical range setting the SIGNAL I/O
function PREAMP_RANGE_HI to ON.
O GEN STATUS: The CPU uses this control signal to turn the O
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by setting it to HIGH/LOW respectively. The CPU turns OFF the O
is if there is no or low air flow to it as measured by the O
instrument has been turned off for more than 30 minutes.

The O generator can be manually turned ON/OFF by using the OZONE
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GENERATOR OVERIDE feature (See Section 12.7.15.1) or by setting the SIGNAL
I/O function O3GEN_STATUS to ON or OFF.
Any I/O signals changed while in the signal I/O menu will remain in effect ONLY
until signal I/O menu is exited.
The analyzer regains control of these signals upon exit and returns them to their
normal value/setting.
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I C is a two-way, clocked, bi-directional digital serial I/O bus that is used widely in
commercial and consumer electronic systems.
converts data and control signals from the PC-104 bus to I
fed to the relay board, optional analog input board and valve driver board circuitry.
This circuit monitors the +5V power supply during start-up and sets the analog outputs,
external digital I/O ports, and I
instrument software can establish control.
A transceiver on the Motherboard
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C circuitry to specific values until the CPU boots and the
Principles of Operation
generator ON/OFF
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generator if there
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flow sensor or if the
3
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C format. The data is then
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