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Page 2
Model 461A/462A
Page 6·3. Table 6·1. Change the following part numbers:
Ref.Oesig.
From
To
CHANGE NO.9 applies to Serial Numbers 0946A06021
and greater for the Model 461A, and Serial Numbers
0947 A01786 and greater for the Model 462A.
CHANGE NO.7 For All Serial Numbers.
C9, Cl0
0180.Q155
C21, C27; C32
0160·0170
0180·1701
0160·0128
Page 6-4. Change the part numbers of
L
15, 16 to
9140-
0179 (Coil: 22UHI Otv 2. Add to Misc. Parts -hp- Part
Number 0360·1668 (Term Strip for L15, L161 Otv 1.
Page 1·1, Table 1-1. Change the Frequency Response
Specification to: Frequency Response:
±
1 dB. 1 kHl
to
150 MHz when operating Into a 50
n
resistive load.
Page 5·2. Change Paragraph 5-8 as follows:
5·8, 50 kHz Gain Check (461A and 462AI;
Output Voltage Check (461Al.
b.
Set the oscillator to 50 kHz and oscillator
amplitude to read 0 dB on the . 10 dB range of the
ae voltmeter.
Page 5-3. Change Paragraph 5·9{b) and (e) as follows:
b. Set the oscillator frequency to 50 kHz and
adjust its amplitude to read 0 dB on the . 10 dB
range of the ae voltmeter.
e.
Record the error at 2 MHz for use in Para-
graph 5-12. The reference for high frequency
response must be 50 kHz.
Page 54. Change Paragraph 5-12Ic) and
(f)
as follows:
c. Increase the amplitude of the signal genera-
tor
to
read 0 dB on the 0 dB range of the RF Volt-
meter. (Include the variation from the
50 kHz
reference as recorded in Paragraph 5-9, Step
e.)
f. Connect as in position B. The ac voltmeter
must read the reference at
50 kHz
(0
dB
on the
o
dB ranqel
±
1
dB or less.
ERRATA
Page 5·8, Paragraph 5·22. Steps d. e and f are printed
twice. Delete the second set on top right column.
Page
5-8.
Paragraph 5·23(b). Change Step
b
to read: Con-
nect the ac voltmeter to position "A" and adjust the out-
put of the oscillator for a reading on the ac voltmeter of
·10 d8 at 50 kHz.
CHANGE NO.8 applies to serial numbers 0946A05836
and greater for the Model 461A, and serial numbers
0947A01786 and greater for the Model 462A,
Page 6·4, Table 6-1. Change the part number for
XFl
from 1400·0084 to 2110·0170-Post and 2110·0465-
Cap. Add the following parts as associated hardware:
CHANGE NO. 10 Applies to all Serial Numbers.
Page 6·4. Change the part number of the "Insulator For
01" from 0340·0580 to 0340.Q583, Reference Change
No.4.
2110·0467
1400·0090
2190·0054
Hex Nut
Washer
Washer
orv
1
Otv 1
OW 1
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