A
CAUTION
THE 91OOA CALCULATOR WILL
,A\ oPERATE FROM A 400 HERTZ
. POWER SOURCE, THE 9120A
PRINTER WILL NOT. DAMAGE
COULD RESULT TO THE PRINTER
IF 4OO HERTZ POWER IS APPLIED.
A member of the growing 9100 system's instrument fam-
ily, the 9I20A printer gives the 9100 series calculator
printing power. The 91204 will print, singularly or in any
combination, the contents of the calculator's X keyboard,
Y accumulate, and Z temporary registers. The printer will
also print the contents of the calculator's memory.
The Model 91204 requires either 115 or 230 volts AC
-+lOo/o, 50 to 60 Hertz and approxímately 45 watts of
power. With the printer disconnected from the AC power
source, slide the line voltage switch on the rear panel until
the line is under the voltage to be used.
GENERAL INFORMATION
GENERAL DESCRIPTION
POWER REQUIREMENTS
RAD|O FREQUET{CY
INTERFERENCE
GROUNDING
REQUIREMENTS
3
CAUTION
DO NOT APPLY OPERATING POWER
TO THE 9120A PRINTER UNLESS
THE LINE VOLTAGE SWITCH ON THE
REAR PANEL IS IN THE PROPER
POSITION.
Radio Frequency lnterference (RFl) is generated by many
electrical devices, included in this group is the 9120A. A
paper length of less than one foot will minimize the
amount of RFI generated by the printer; as the paper is
conductive it acts as an antenna.
To protect operating personnel, the National Electrical
Manufacturer's Association (NEMA) recommends that the
printer keyboard and cabinet be grounded. The printer is
equipped with a three-conductor power cable which, when
plugged into an appropriate receptacle, grounds the
cabinet of the printer. The center pin on the power cable
three-pronged connector is the ground connection.
,t\
