HP 3580A - Page 150

Section VII Model 3580A
GENERAL SCHEMATIC NOTES
1. PARTIAL REFERENCE DESIGNATIONS ARE SHOWN.
PREFIX WITH ASSEMBLY QR SUBASSEMBLY Dl<SIG-
NATION(S) OR BOTH FOR COMPLETE DESIGNATION.
2. COMPONENT VALUES ARE SHOWN AS FOLLOWS UN-
LESS OTHERWISE NOTED.
RESISTANCE IN OHMS
CAPACITANCE IN MICROFARADS
INDUCTANCE IN MILLIHENRYS
3. J_
DENOTES EARTH GROUND.
USED FOR TERMINALS WITH NO LESS THAN A
NO. 18 GAUGE WIRE CONNECTED BETWEEN
Tt:RMINAL AND EARTH GROUND TERMINAL OR
AC POWER RECEPTACLE.
4. J.
DENOTES FRAME GROUND.
USED FOR TERMINALS WHICH ARE PERMA-
NENTLY CONNECTED WITHIN APPROXIMATELY
0.1 OHM OF EARTH GROUND.
6.
7.
9.
10.
DENOTES GROUND ON PRINTED CIRCUIT
ASSEMBLY. (PERMANENTLY CONNECTED TO
FRAME GROUND).
DENOTES ASSEMBLY.
DENOTES MAIN SIGNAL
PATH.
DENOTES FEEDBACK
PATH.
DENOTES FRONT PANEL MARKING.
r---,
11. L. - - .J DENOTES REAR PANEL MARKING.
12. .... DENOTES SCREWDRIVER ADJUST.
13. * AVERAGE VALUE SHOWN, OPTIMUM VALUE SE-
LECTED AT FACTORY. THE VALUE OF THESE
COMPONENTS MAY VARY FROM ONE INSTRU-
MENT TO ANOTHER. THE METHOD OF SELECTING
THESE COMPONENTS IS DESCRIBED IN SECTION V
OF THIS MANUAL.
''
14. -7 )--- DENOTES SECOND APPEARANCE OF A CON-
, " NECTOR PIN.
15. \924 /DENOTES WIRE COLOR: COLOR CODE SAME AS
RESISTOR COLOR CODE. FIRST NUMBER IDEN-
TIFIES BASE COLOR, SECOND NUMBER IDEN-
TIFIES WIDER STRIP, THIRD NUMBER IDENTIFIES
NARROWER STRIP. (e.g. 19241 =WHITE, RED,
YELLOW.)
17. ALL RELAYS ARE SHOWN DEENERGIZED.
18. WAVEFORMS AND AC VOLTAGE MEASUREMENTS WERE
MADE WITH RESPECT TO CHASSIS GROUND USING AN
OSCILLOSCOPE WITH A 10:1 DIVIDER PROBE (10 MEG-
OHM, 10 pF). THE VOLTAGE LEVELS SHOWN ON THE
WAVEFORMS ARE ACTUAL VOLTAGE LEVELS AND ARE
NOT TO BE CONFUSED WITH OSCILLOSCOPE SETTING.
THE VOLTAGE LEVELS SHOWN ARE NOMINAL AND
MAY VARY FROM ONE INSTRUMENT TO ANOTHER. A
VARIATION OF ± 10 % IN MEASUREMENTS SHOULD BE
ALLOWED.
19_ DC VOLTAGE LEVELS WERE MEASURED WITH RESPECT
TO CIRCUIT GROUND USING A VTVM WITH 10 MEGOHM
7-8
INPUT IMPEDANCE. THE VOLTAGE LEVELS SHOWN ARE
NOMINAL AND MAY VARY FROM ONE INSTRUMENT TO
ANOTHER DUE TO CHANGE IN TRANSISTOR CHARAC-
TERISTICS. A VARIATION OF ± 10 % SHOULD BE
ALLOWED.
A
B
c
A
B
c
DENOTES BUFFER
DENOTES INVERTER
·Q
DENOTES AND GATE
Q
DEN OTES NAN D GA TE
Q
DENOTES NOR GATE
:~D-Q
DENOTES EXCLUSIVE OR GATE
A B c
0 0 0
0 0
0
0
0
0 0
0 1
0
1 1 1
A B
c
0 0 0
0
0
0
0
0
1
0 0
0 1
0
A
B c
0
0 0
0
0 1
0
1 0
0
1 0
0
1 0
1 1 0
1 1
A B Q
0 0 0
0
0
0
Q
0
0
0
0
0
0
0
1
Q
1
1
0
Q
0
0
0
0
0
0
0