Model 3580A
PERFORMANCE
TESTS
Section V
Option
002: Set dBm 900 .Q/LIN - dBm
600
.Q
switch to
dBm
900
.Q;
set INPUT
MODE switch
to
UNBAL.
b. Adjust ZERO CAL for a peak display on the left
graticule.
c. Reposition the following front panel controls:
AMPLITUDE MODE
........
LOG 1 dB/DIV
SWEEP
MODE
.................
MANUAL
d.
Connect the rear panel TRACKING
OSC
OUT
to
the
front INPUT terminals
of
the 3580A. Adjust the rear panel
TRACKING
OSC
LEVEL control fully
CW.
Adjust
MANUAL VERNIER for a l kHz display indication
(l
major division from left graticule). Readjust the TRACK-
ING
OSC
LEVEL control for a full scale 0
dB
display.
Momentarily press the following control:
DISPLAY
...............
CLEAR WRITE
e. Connect the 1
M.Q
resistor in series between the
TRACKING
OSC
OUT and front panel INPUT terminals.
The display indication should drop 6
dB
±
.3
dB
(6 major
divisions ±
.3
major divisions) to verify
an
input impedance
of
I
MD.
f. Reposition the following front panel control:
INPUT SENSITIVITY . . . . . . . . . . . . -
10
dB
g.
Readjust the rear panel TRACKING
OSC
LEVEL
control for a full scale display. Adjust MANUAL VERNIER
for a display indication at 10 kHz (far right display
graticule).
DO
NOT REMOVE 1 MD RESISTOR. Momen-
tarily press the following front panel control:
DISPLAY
...............
CLEAR WRITE
h. 1) Std. 3580A: The amplitude should drop 3
dB
± 1 dB, verifying that the input shunt capacitance
is
30
pF,
nominal.
2) Option 002: The amplitude should drop 4
dB
± 1
dB,
verifying that the input shunt capacitance
is
40
pF, nominal.
i. Disconnect the cable connected between the TRACK-
ING
OSC
OUT and the front panel INPUT terminals.
5-40.
Output
Tests.
5-41. These tests verify the
Output
specifications
of
the
3580A listed in Table 1-1.
Equipment Required:
Electronic Counter (-hp- Model 5326A)
Digital Multimeter (-hp- Model
34740/34702)
Distortion Analyzer (-hp- Model 333A)
5-42.
TRACKING
OSC
OUTPUT
Tests.
a. Position the following front panel controls. (Only
those controls printed in BOLD require a change from the
previous tests).
ADAPTIVE
SWEEP
.................
OFF
DISPLAY
........
All
pushbuttons released
AMPLITUDE MODE
......
LOG IO dBv/DIV
AMPLITUDE REF LEVEL
.......
NORMAL
dBv/LIN - dBm 600
.Q
............
dBv/LIN
INPUT SENSITIVITY
............
+ 20 dB
VERNIER (Amplitude) . . . . . . . . . . . CAL
(Fully
CW)
FREQUENCY
.................
00.0 kHz
START-
CTR
...................
START
RESOLUTION BANDWIDTH
.......
10 Hz
DISPLAY SMOOTHING
.............
MIN
FREQ. SPAN/DIV
................
5 KHz
SWEEP
TIME/DIV . . . . . . . . . . . . . . . 5
SEC
SWEEP
MODE
...................
RESET
Option
002: Set dBm
900
.Q/LIN - dBm
600 Q switch to dBm
900
n; set INPUT
MODE
switch to UNBAL.
b. Momentarily press DISPLAY - CLEAR WRITE. Ad-
just the ZERO CAL for a peak display (on leftmost display
graticule).
c. Connect the multimeter
(AC
mode 100 volt range) to
the rear panel TRACKING
OSC
OUT. Adjust the FRE-
QUENCY dial for 50 Hz (300 Hz for Option 002). Adjust
the rear panel TRACKING
OSC
LEVEL control for a 2.00
volt reading on the multimeter.*
d. Adjust the FREQUENCY control to 50.0 kHz
(20.0 kHz for Option
002
instruments). Verify that the
multimeter reads 2.00 volts ± .06 volts ( ±
.1
volts for
Option 002 instruments).
e.
Reposition the following front panel controls:
AMPLITUDE MODE
................
LIN
INPUT SENSITIVITY
...............
2 V
FREQUENCY
..................
00.0 Hz
RESOLUTION BANDWIDTH . . . . . . .
30
Hz
SWEEP
MODE
.................
MANUAL
f.
Connect the rear panel TRACKING
OSC
OUT
to
the
front panel INPUT terminals. Momentarily press the follow-
ing control:
DISPLAY
...............
CLEAR WRITE
*For
measurements
below
50
Hz, use a
low
frequency
Digital
Voltmeter
such
as
the
-hp- Model
3480/3484
with
true
rms.
5-13
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