2.
On the Alphanumeric Printer Type 2312:
a.
Set the INTERFACE MODE SWITCH on the rear panel to the "IEC - Listen Always"
position.
b.
Set the CLOCK CONTROL SELECTOR on the front panel
to
the time interval required
between readings. This controls not only the output
to
the 2312, but also
to
the other
instruments on the bus. If the switch is set in the
"Ext."
position, data will be printed out
and sent to the other instruments connected
to
the bus at the end
of
each averaging
period i.e. every 2 seconds.
c. Set the right hand PRINT switch to
"Auto".
3.
On
the Digital Cassette Recorder Type 7 400:
a.
Set the INTERFACE MODE switch on the rear panel
to
"IEC".
b.
Set the 7400 up
for
recording as described in its Instruction Manual.
c. Press the two RECORD pushkeys
"Data"
and "Enable" simultaneously so that the LED in
the
"Data"
pushkey comes on indicating that the 7400 is ready to receive data.
4.
On
the
2512:
a.
Set the ADDRESS SWITCH on the rear panel as in the table below:
Subswitch Number
Position
Function
7
0 Calculator
6 1
Ton
810042
b.
Set the front panel controls for the measurement required as in Chapter
3.
c.
Press the two MEASURMENT pushkeys simultaneously, so that their LEDs are lit, and
press the INTERFACE pushkey
to
activate the interface.
5.
Press ST ART
to
begin the measurement.
Data will now be transmitted from the 2512
to
the external devices at
an
interval
determined by the setting
of
the CLOCK CONTROL SELECTOR on the 2312. If
'Ext"
has
been selected, data will be output at an interval determined by the time constant
of
the
2512, i.e. once every two seconds.
Switching off one
of
the instruments on the bus has no effect on the rest
of
the
instruments on the bus, which continue to receive data without interruption.
7.
To stop the measurement press MEASUREMENT STOP on the 2512.
45
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