A16 Resistor Parts List - HP 5065A Operating And Service Manual

Model 5065A
Circuit Diagrams, Theory, and Maintenance
CHANGE 20 (1532A00631 and below):
Under Change 19 (this section) A19 Parts List and
schematic diagram delete A2C6. Ignore all ref­
erence to a third A19 board acting as a shield.
CHANGE 21 (1532A632 through 1532A790):
Page 1-4, Table 1-3:
Change CLOCK MOVEMENT to read "24 hour
mechanical clock."
Page 3-9, Paragraph 3-21:
Replace with the following:
"The TIME STANDARD OPTION includes a mechanical
clock movement indicating time in hours, minutes, and
seconds. FAST and STOP pushbuttons on the divider
module (Figure 3-10) permit setting the clock movement
to the nearest second. The hour and minute adjustment
is the knob located on the back of the clock movement.
To set, remove the top cover; then reach in and pull out
the knob to engage and set the clock. Push this knob
back in to release. The SYNC pushbutton allows the 5065A
to be synchronized to an external clock pulse.
Page 3-9, paragraph 3-25(f):
Replace paragraph with:
When the clock pulse is synchronized, the mechanical
clock in the 5065A will run in step. The set knob at the
rear of the clock provides coarse adjustment of hours
and minutes. The FAST and STOP switches on the A5
module provide a way to speed up or stop the clock for
adjustment to the nearest second."
Page 3-9, paragraph 3-28:
Replace with: "Setting the Mechanical Clock".
a. Remove top cover for access. Use the set knob at
the rear of the clock; pull out to engage and set.
b. The FAST and STOP pushbuttons on A5 are ac­
cessible with the top cover removed 10 PPS is routed to
the clock with the FAST pushbutton depressed. The
STOP pushbutton disconnects the clock drive.
Page 3-15, Figure 3-11:
Add attached TOP OPERATING CONTROLS
Figure 7-18.
Page 4-2, paragraph 4-17:
Replace paragraph with the following:
Additional A5 controls are the FAST, STOP, and SYNC
switches. The FAST pushbutton speeds up the clock
movement by replacing the 1 PPS clock drive with 10
PPS. The STOP pushbutton shorts the 1 PPS clock drive
to ground to stop the clock.
To synchronize the 1 PPS with an external reference
pulse, the SYNC pushbutton is depressed for 1 second
then released. If a sync pulse is connected to the rear
SYNC INPUT jack, one reference pulse will enter the
synchronizing circuits during the 1 second interval.
This pulse will reset the digital divider. The output 1 PPS
"tick" pulse from the 1 PPS front panel jack will then be
in "sync" with the reference pulse.
Page 6-2, Figure 6-1 item 4:
Change Panel: Left insert; to 05065-0011. Door
Panel; to 05065-0015. Standard Panel Insert; to
05065-00122. Panel Option 002 Insert; to 05065-
0014.
Page 6-26, Table 6-5:
Added A5B1, 05065-6085.
Change 05065-0048, Chassis: Digital Divider to
05065-0037.
Change A5,05065-6084, Module Assy Digital Divid­
er to 05065-6025. Add A5S1 3101-0052; SWITCH:
PUSHBUTTON SPST; 82389; 961 LESS HWD and
A5S3 Same as A5S1.
Page 6-27, Table 6-5:
Change A16 from 05065-6085 to 05065-6028.
Change A16A1 from 05065-6082 to 05065-6029.
Add: A16IC1 1820-0313 IC; DTL RS/JK CLOCKED
F/F; 28480; 1820-0313
A16A1Q11 and Q12; 1854-0020; TSTR;SI
NPN; 28480; 1854-0020.
A16A1CR13 and CR14; 1902-0554; DIODE BREAK­
DOWN: 10V 1W; 28480; 1902-0554
Page 6-30, Table 6-5:
Add Table 7-11 resistor parts list to A16 (R21 to
R26).
Table 7-11. A16 Resistor Parts List
Reference
Designation
A16A1R21
A16A1R22
A16A1R23
A16A1R24
A16A1R25
A16A1R26
HP Part
Number
0757-0931
0757-0931
0757-0924
0757-0924
0757-0920
0757-0920
Qty
2
2
Description
R: FXD FLM 2K OHM 2% 1/8W
R: FXD FLM 2K OHM 2% 1/8W
R: FXD MET FLM 1K OHM 2% 1/8W
R: FXD MET FLM 1K OHM 2% 1/8W
R: FXD FLM 680 OHM 2% 1/8W
R: FXD FLM 680 OHM 2% 1/8W
Mfr
Code
28480
28480
28480
28480
28480
28480
Part Number
0757-0931
0757-0931
0757-0924
0757-0924
0757-0920
0757-0920
7-52