HP 6268B Operating And Service Manual

1-10 OPTIONS
Option No.
Description
1-11 Options are customer-requested factory modifica¬
tions of a standard instrument. The following options are
available for the instruments covered by this manual. Where
necessary, detailed coverage of the options is included
throughout the manual.
Option No. Description
005 Realign ment for 50Hz Operation : Standard
instruments are designed for 57 to 63Hz
operation. For 50Hz operation, a resistor
in the preregulator control circuit is changed
and the preregulator is realigned.
007 T en-Turn Output Voltage Control: A ten-
turn control replaces the coarse voltage con¬
trol for improved resolution in setting the
output voltage.
008 Ten-Turn Output Current Control: A ten-
turn control replaces the coarse current
control for improved resolution in setting
the output current.
009 Ten-Turn Output Voltage and Current
Control s: This option includes Options
007 and 008 in the same instrument.
010 C hassis Slides : Factory installed slides
permit convenient access to the interior of
a rack mounted supply for maintenance.
013 Three-Digit Graduated Decadial Voltage
Control: To improve mechanical stability
and permit accurate resetting of the output
voltage, Option 013 replaces the coarse
voltage control with a ten-turn control
equipped with a 3-digit turns-counting dial.
014 Three-Digit Graduated Decadial Current
Control : To improve mechanical stability
and permit accurate resetting of the output
current. Option 014 replaces the coarse
current control with a ten-turn control
equipped with a 3-digit turns-counting dial.
016 Rewiring for 11 5Vac ±10% Single-Phase
Input (Model 6260B only): This factory
modification replaces the circuit breaker
and power transformer, adds a resistor to the
A2 assembly, and reconnects the bias trans¬
former, preregulator choke, and fans for
11 5Vac operation.
020 Adjustable Voltage Programming : Two
screwdriver-adjustable controls accessible
through holes in the rear panel allow the
voltage programming coefficient and zero
output voltage to be adjusted conveniently
to an accuracy of 0.1%.
021 Adjustable Current Programming: Two
screwdriver-adjustable controls accessible
through holes in the rear panel allow the
current programming coefficient and zero
output current to be adjusted conveniently
to an accuracy of 0.1%.
022 Adjustable Voltage and Current Programming:
This option includes Options 020 and 021
in the same instrument.
026 Rewiring for 11 5Vac ±10% Single-Phase
Input (Models 6259B, 6261 B, and 6268B only):
This factory modification replaces the circuit
breaker (except in the Model 6259B), adds
a resistor to the A2 assembly, and reconnects
the power transformer, bias transformer,
preregulator choke, and fans for 115Vac
operation.
027 Rewiring for 208Vac +10% Single-Phase
Input: This factory modification reconnects
the power and bias transformers for 208Vac
operation.
040 Interfacing for Mu ltiprogrammer Operation :
This factory modification prepares standard
power supplies for resistance programming
by the 6940B Multiprogrammer or the
6941 B Multiprogrammer Extender. Operation
with either of these instruments requires that
the power supply be subjected to a special
calibration and a protection checkout. The
special calibration insures that the power
supply can be accurately set to zero and to
the maximum rated output voltage or current
when programmed by the multiprogrammer.
The protection checkout insures that the
power supply will not be damaged by the
rapid repetitive programming possible with
the multiprogrammer. This option includes
Option 022.
1-12 INSTRUMENT/MANUAL IDENTIFICATION
1-13 Hewlett-Packard power supplies are identified by a
1-2

HP 6268B Specifications

General

Brand	HP
Model	6268B
Category	Power Supply
Language	English