Ectron 451, Инструкция по эксплуатации

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SECTION VI
ALIGNMENT
GENERAL
The Model 451 is easily aligned in two steps: output alignment and input alignment. Prior
to aligning the Model 451, the user should read Section III, Operation, to become familiar
with its operation.
EQUIPMENT REQUIRED
Digital multimeter Hewlett Packard Model 3478A or equivalent.
Matched resistor set
Two 5-k
Ω
metal film resistors, each with an absolute
tolerance of
±
0.1% and ratio-matched to each other to
within
±
0.005%.
Precision resistive divider
ESI Model 622A or equivalent.
Dual operational amplifier
Analog Devices Model OP270FZ or equivalent.
Dc power supply (PS1)
This power supply will be used to power the Model 451.
Requirements are 10.5 to 32 V dc @ 80 mA nominal.
Plus-and-minus dc power
supply (PS2)
This power supply must be capable of supplying 10 V
dc (
±
0.5 V dc) to the dual operational amplifier.
Hookup wires and cables
as required.
PROCEDURES
Output Alignment
The output alignment consists of going to the two out-
put-alignment screens for voltage and setting the output
(Pins 4 and 11) to
±
10 V dc. The numbers on the bottom
line of the two alignment screens are provided so that
the user can retain the setting for future reference should
it be needed.
1. Connect the Model 451 and dc voltmeter as is shown
in Figure 6-1. Set PS1 to any voltage between 10.5
and 32 V dc and set the dc voltmeter to measure
10 V dc with 1-mV resolution.
2. From the operating screen press the display once
to go to the main menu. turn the encoder until
OTHER
is displayed, then press the display.
3. Turn the encoder until
ALIGN
is displayed and
again press the display. At this point the display
should read
ALIGN +10V
.
6-1