Pviodel 1415A
Appendix I1
CHANGE 8 Paragraphs 5-9, 5-25 step a, and Table 5-5,
Figure 5-24, Change "SWEEP.. . . . NORMAL" to "SCANNING
R601: Change value to 12K ohms. . . ... NORMAL, INT."
Tables 6-1 and 6-2, Paragraphs 5-14 steps a and c, and 5-38 step a,
R601, R603: Change to hp Part No. 0684-1231; Change "SWEEP" to "SCANNING. "
R: fxd, comp, 12K ohms, 50/0, 1/4W; MfrOll21;
Mfr Part No. CB1231. Paragraph 5-44, second sentence,
Change to read: If Set SCANNING INT/MANUAL
CHANGE 9 control to MANUAL and adjust so that the dot
is - - - - -.f'
Paragraph 3-8,
Replace the completeparagraph with the following: Figure 5-6,
Delete R110, and connect R112 in parallel with
"3-8. SCANNING. This control function con-
sists of two controls which set up the horizontal Q102 base and collector.
scan mode. The NORMAL/DETAIL slide switch R103: Change value to 15K ohms.
selects either normal scanning of the input sig-
Figure 5-8,
nal (about 3000 samples per sweep, repetition
Delete
rate of 50 cps) or detail scanning which provides
Figure 5-9,
a higher sampling density for a more detailed
sweep (about 30,000 samples per sweep, repe- Replace with Figure IIA-2 of this appendix.
tition rate of 5 cps). The INT/MANUAL con-
trol selects either internal scanning (when Figure 5-11,
turnedfully counterclockwise) of the input signal Delete: ,5203, R208 thru R211, C204, CR210, and
or, when rotated clockwise, provides a manual Q2 15.
scanning capability. Connect 901, 5201, andassociatedcomponents as
shown in Figure IIA-3 of this appendix.
Paragraph 3-12, Delete R276 and R277, and connect R275 to +15V.
Delete Paragraph 3- 12. Q2 10/Q2 11: Change transistors to NPNand connect
Figure 3-1, both collectors to +15VF. Connect R281 and
Replace with Figure IIA-1 of this appendix. R282 to -12. 6V, and change value of R282 to
2200 ohms.
Figure 3-2, step 4,
Change dc voltages as follows:
Change to read "Set SCANNING INT/MANUAL to Q210 base to +2.85V
INT. 'I Q211 base to +2.8V
Figure 3-5, step 3,
Figure 5-14,
Delete Note.
L301: Change value to 500 ph.
Figure 3-6, step 4,
C322: Change value to 80 pf.
Delete Note.
R325: Change value to lOOK ohms.
Paragraph 4-6, second sentence,
Figure 5-18,
Delete: "Narrow band - - - - - interference band. I'
C403: Change value to 1.0 pf,
Paragraph 4-10, third sentence, Delete asterisk on V401 designator.
Replace with the iollowing: "This voltage may be an
internally- generated sawtooth (SCANNING control Figures 5-19 and 5-20,
Replace with Figures IIA-4 and IIA-5 of this appendix.
switched to INT) or manually determined by
operating R206 (MANUAL). " Figure 5-23,
R528: Change value to 68K ohms.
Paragraph 4-11,
Delete: R598A and R598B.
Replace four sentences beginning with "With the
Include C581 on Amplifier board A5.
SWEEP switch - - - -I' andendingwith 'I- - - -
Delete R534, and connect V503, pin 12 directly to
approximately zero volts. with the following
V401, pin 12.
sentence: "With the MANUAL/INT control in
MANUAL scan condition, the dc voltage on the
Figure 5-24,
wiper of R206 is the slow ramp signal. 'I
Delete R609 and its leads.
Figure 4-3, Delete CR603, and connect Q60l emitter directly
Delete: "RECORD SWEEP GENERATOR Q215"
to ground.
block, Record/Reset section of switch, callouts
Figure 5-25,
"Record/Reset'' and "Sweep Switch S203, and
Replace with Figure IIA-6 of this appendix.
switch mechanical linkage.
Change "Normal Detail" callout to Normal/Detail/
Tables 6-1 and 6-2,
Int. '' Make changes, additions, and deletions as shown
in Table EA-1 of this appendix.
Paragragraph 4-24, sixth sentence,
Delete: ''Broad band - - - - - interference band. ''
m-2 01944-1 |