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MANUAL CHANGES MODEL 5065A (05065-9041)
SERIAL PREFIX OR
SERIES NUMBER
CHANGES
Page 8-66. Circuit Diagrams, Theory, and Maintenance:
All Serials
DIGITAL DIVIDER POWER SUPPLY A16 THEORY
>Change first line to read, "The A16 module has two basic
circuits".
>Delete paragraph "c".
>Change second sentence in first paragraph at top of column
to: "In T2 output, CR10 provides isolation."
>Replace second paragraph in column two with the following:
"The 1 PPS pulses from A5 Digital Divider output connector
(J1) are input as MASTER 1 PPS pulses at terminal W on
Clock Display Assembly A19."
>Delete third paragraph under "A16 MAINTENANCE".
Page 8-67i Figure 8-25. Figure 8-25. A16 Digital Divider Power Supply Assembly:
All Serials
>Change reference designation of diode CR13 to CR12,
located between R19 and R20 (upper left corner).
>Change reference designation of diode directly to the
left of R10 (top center) from R15 to CR10.
>Add resistor R15 betweeen the two terminal posts just above
R17.
Reference Designator Table
>Change CR1-15 to CRI-12,15.
>Change Q1-12 to Q1-10.
>Change R1-26 to R1-20.
2148A
>Change A16.A16A1 SERIES to 2148.
>Add to NOTES:
4. Transistor 1854-0916 is a preferred part. A16 and
A16A1 SERIES 2148, which use the 1854-0916 transistor
for Q9
f
Q10, are directly interchangeable with prior
series. These assemblies are used in Opt 001 and 003
only. Option series changes do not affect the serial
prefix in this instrument.
Table of Active Components
>Change Q9, Q10 to 1854-0916.
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