Teledyne 3010TB - Split architecture trace oxygen analyzer - Manual (Page 25)

Oxygen Analyzer Part I: Control Unit
Part I: 3-9
Teledyne Analytical Instruments
4) When the CRC closes, remove the span command.
When CRC opens again, zero and span are done, and the sample is
being analyzed.
Note: The Remote Probe connector (paragraph 3.3) provides signals
to ensure that the zero and span gas valves will be controlled
synchronously. If you have the -C Internal valve option -
which includes additional zero and span gas inputs - the
3010TB automatically regulates the zero, span and sample gas
flow.
Range ID Relays: Four dedicated RANGE ID CONTACT relays .
The first three ranges are assigned to relays in ascending order—Low range
is assigned to RANGE 1 ID, Medium range is assigned to RANGE 2 ID,
and High range is assigned to RANGE 3 ID. RANGE 4 ID is reserved for
the Air Cal Range (25%).
Network I/O: A serial digital input/output for local network protocol.
At this printing, this port is not yet functional. It is to be used in future
versions of the instrument.
RS-232 Port: The digital signal output is a standard RS-232 serial
communications port used to connect the analyzer to a computer, terminal, or
other digital device. The pinouts are listed in Table 3-3.
Table 3-3: RS-232 Signals
RS-232 Sig RS-232 Pin Purpose
DCD 1 Data Carrier Detect
RD 2 Received Data
TD 3 Transmitted Data
DTR 4 Data Terminal Ready
COM 5 Common
DSR 6 Data Set Ready
RTS 7 Request to Send
CTS 8 Clear to Send
RI 9 Ring Indicator
The data sent is status information, in digital form, updated every two
seconds. Status is reported in the following order: