HP 5245L User manual

@ MANUAL CHANGES
MODEL 5245L
ELECTROMC COT'NTER
Manual Serial Prefixed: 408-
Manual Printed: MAR 1964
MAKE ALL CORRECTIONS IN THIS MANUAL ACCORDING TO ERRATA BELOW, THEN CHECK THE FOLLOWING TABLE FOR YOUR
INSTRUMENT sERIAL PREFIX {3 OIGITS) OR SERIAL NUMBER (8 DIGITS} Ai{O MAKE ANY LISTED CHANGE(S) IN THE MANUAL.
> NEW ITEM.
5ERIAL PREFIX OR NUMBER MAKE MANUAL CHANGES SERIAL PREFIX OR NUMBER MAKE MANUAL CHAI{CEs
425-
429- 1.2
430- t-2.3
442- Lr2,3,4
Figure 5-35, Table 6-1,
Change: A25Q4 to_2N2043; @ Stock No. 1850-0092. Recornmended replacement
for all 5243A-65T assemblies.
Table 6-1,
Delete: MP39 Bracket; Transformer 5248 A-LZA.
Paragraph 5-18 should be corrected to read as follows:
e. Adjust A19R? until correct count appears. Alternately
decrease the output of the oscillator and adjust AlgR?
until manimum sensitivity is obtained.
f. Vary frequency below 50 Mc. Correct count should be
obained over the frequency range with a signal input of
100 mv.
Add: h. The above procedure adjusts the counter for manimum
sine wave operation. For pulse operatlon the sensttivity mugt
be readjusted for manlmum performance with either positive
' or negative pulses.
i. For negative pulse operation, adjust sensitivity by turning
A19R7 in a clockwise direction.
j. For positive pulse operation, adjust sensitivity by turning
A19R? in a counterclockwise direction.
Paragraph 5-28 a.
change last line to read as follows: ". . . to pERroD or FREeuENcy. "
Paragraphs 5-28 c, and 5-29 c. , "
Change 20 Mc to 50 Mc.
Figure 5-5:
Correct Figure 5-5 as shown in Figure 1.
Figure 5-29:
Change "GATED SIG TO A17 (2)" to "A1?(13)".
Table 6-1:
Add: A8DS2 through DSg 2140-0028.
Change: A21T1 to 9130-0035.
Supplement A for
05245-9001
t0-22-64

-=-i.-=!€FE,.-:J:' W:-i:
ERRATA
(Cont'd)
RESET
TORAGE
AsstA -1
-rfiil
PART OF A5
SCALER
SIGNAL
Manual Changes Mode1 5245L Page 2
) Table 1-1, 'Pag e L-2,
Under TIME BASE change the followlng:
Aging rate-less than 3 parts in l0r^per 24 hrs**
Short term-Iess than 2 parts in 10'' RMS.
) Table 5-6, Page 5-?,
Under Line Voltage 115 change the following:
-130 *1070.
+1?0 xl%.
) Figure 5-5, Page 5-11,
A21 stoek number should be 5245A-65K.
> Figure II A-3, Table II A-3,
Change C2 to 140 pf, @ Part No. 0140 -02L7
At6 t4'ol/
DCA
5232L-48, DCA caz
5245A .9lpr
11
A BC D
\--v---, READOUT
ASSY
5245L-48
11
RI
22K
ABCD
Y
At5(2)
TIE
POINT GATED SIGNAL
L0-22-64

Manual Changes Model 5245L Page 3
CHAI.IGE 1 Figure 5-15, Table 6-1,
Charge: A?CR2 to'1902 -02L4.
Table 6-1,
Delete: MP52 5243L-L7 A
MP52, 55 5243L-3?A
MP58, 59 5243L-74A
MP63, 64 5243L-g3D
MP66 5243L-91A
MP69, ?0 5243L-109A
MP?4- 5245L-2A
Change MP53 to 05243 -20L9
Add: 05243-0006 Retainer-Front Plate 1 Each
05243-000? Retainer-Latch 1 Each
05243-2013 PawI 1 Each
06243-2014 Shaft-Latch 1 Each
05243-2015 Knob 1 Each
05245-2005 Panel-Front 1 Each
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_.G*
r_ t_.
CHANGE 2
CHAI{GE 3
CHANGE 4
Manual Changes Model 5245L Page 4
Figure 5-44, Tables 6-1, 6-2,
Delete J9 and J10, @ Stock No. 1251-0085, and all assoclated wiring.
(Remote control circuitry is available by special order. )
Table 6-L, 6-2,
Change MP?5 Rear Panel to @ Stoctc No. 05243-200?.
Figure 5-23, Table 6-1,
Change A1?Q9 to @ Stock No. 1850-0163.
Figure 5-32, Table 6-1,
Delete: C10 1000 pf @ Stock No. 0140-0152.
Add: Cll 390 pf @ Stock No. 0140-0200.
Add: C12, 13 .L ttf @ Stoct< No. 0150-0121.
Add: R36 4?0 ohms @ Stock No. 0686-4?15.
See schematic below.
- l5v
INH IBIT
AMPL
Q3
R!3
47o.
r850-
.I cil
3?OPF
R9
47K
HOLDOFF TRIG
EMIT FOL
olo
1890-0062
Table 6-1,
Change: A19R3 to @ Stock No. 0?5?-091?.
Change: A19R2 to @ Stock No. 0?b?-0959.
Change: A19R12 to @ Stock No. O?b?-0g5b.
Figure 5-15, Tables 6-1, 6-2,
Add: A6C2, 3 .01 prf, @ Stock No. 01?0-001?.
Add: A6C1, 4 .047 1fi., @ Stock No. 01?0-0040.
Connect as follows:
AOCI between pinA and pin 2.
A6C2 between pin I and pin 14.
AOC3 between pin 8 and pin 13.
AOC4 between pin 5 and pin 6.
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