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Model 562A
Section III
01081-1
by the transfer pulse when the nOll level is not present, no external voltage is
required for the D binary.
A -1224 code req uire s the same voltage s but of
diffe re nt polarity.
If the column board is a +1248 code, in table 3-2 find -(minus).
Under the
"Binary Input" column, the - character must have a "l" input for the A, B,
and D binaries.
An external voltage applied to the A binary must be at least
4 volts more positive than the negative reference voltage.
The Band D binaries
do not require an external voltage as the transfer pulse supplies the" 1" level
when "0" level is not present.
A -1248 code requires the same external
voltages, but of different polarity.
3-13. SETTING THE ANALOG CONTROLS (ortional).
The POTENTIOMETER RECORDER binding posts on the 562A are designed
to operate potentiometer type (voltage operated) recorders having lOO-millivolt-
full-scale sensitivity, and greater than 50K ohm input resistance.
The 562A
can also drive recorders having other values of input sensitivity and resistance
by making minor addiqons or modification to the POTENTIOMETER RE-
CORDER ANALOG OUTPUT.
To use the 562A on a potentiometer recorder, proceed as follows:
a.
Set the COLUMN SELECTOR to include the three number columns to
be recorded gr aphically.
b.
Connect the potentiometer recorder to the POTENTIOMETER RECORDER
binding pos ts on the 56 2A.
c.
Set the OPERATE lever switch to the G8.LV.
ZERO position (the GALV.
ZERO control has no effect on the POTENTIOMETER RECORDER output) but
does supply zero output at potentiometer jack.
d.
Zero set the potentiometer recorder with its own controls.
e.
Set the OPERATE lever switch to the CALIBRATE position.
f.
Adjust the CALIBRATE control to obtain full-scale deflection of the
recorder pen.
g.
Repeat steps c, d, e, and f.
h.
Set the OPERATE lever switch to OPERATE.
The graphic recorder
will now plot the number columns indicated by the COLUMN SELECTOR.
3-14. RECORDING WITH GALVANOMETER GRAPHIC RECORDERS.
The GALVANOMETER RECORDER output jack on the 562A is designed to
operate galvanometer type (current operated) recorders having I-milliampere-
3-7
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