Tektronix 310A, Instruction Manual, Page: 9 / 132

SECTION 2
OPERATING INSTRUCTIONS
Type 310A
Change information, if any, affecting this section will be found at the rear of the manual.
General
To effectively use the Type 310A, the operation and
capabilities of the instrument must be known. This section
describes the operation of the front-panel controls, gives
first-tim e and general operating inform ation and lists some
basic applications.
Power Requirements
The Type 31OA can be operated from either a 117-volt
or a 234-volt nominal line-voltage source. Two auxiliary
windings in addition to the standard windings allow the
nominal primary voltage to be increased or descreased in
steps o f seven volts from 117-volts nominal (to provide
110, 117 or 124 volt nominal operation) or 14 volt steps
from 234-volts nominal (to provide 220, 234 or 248-volt
nominal operation). As the nominal operating voltage is
changed, the regulating range of the power supply changes
also, to provide regulated o utput voltages w ith input line
voltages about 10% lower and 6% higher than the nominal
voltage. The regulating range fo r each line voltage that this
instrument can be wired fo r is as follows.
110-volts nominal
117-volts nominal
124-volts nominal
220-volts nominal
234-volts nominal
248-volts nominal
99 - 117 volts
1 0 5 -1 2 4 volts
111 -132 volts
198 - 234 volts
210 -2 4 8 volts
222 - 264 volts
This instrument w ill regulate over a line frequency range
o f 50 to 800 cycles. For correct regulation at 800 cycles,
increase the minimum line voltage requirement about 4%.
Power consumption is approximately 175 watts. To convert
to a different line voltage than the one fo r which the instru­
ment is wired, use the follow ing procedure.
1. Disconnect the instrument from the power source.
2. Connect the transformer fo r the desired line voltage
as shown in Fig. 2-1.
M m -
9 9 -1 1 7
vo lt*
193 -23 4
volt*
^ ........................ — ^
l
8 7 6 5 4 3 2 1 J
N. __ A
^
8 7 6 5 4 3 2 1
j
105 -12 4
volts
1 1 7 -V o lt N o m inal Connection*
□ c
1 1 1 -1 3 2
volts
j t
k. 8 7 6 5 4 3 2 1 J
8 7 6 5 4 3 2 1 j
2 1 0 -2 4 8
volts
2 3 0 -V o lt N o m inal Connections
2 2 2 -2 6 4
volts
2-1
Fig.
2-1. Power
transformer primary connections.