Introduction; Electrical Characteristics - Tektronix 7a15 Instruction Manual

Intro
d
uction
TABLE 1-1 (cost)
The 7 Α 15 vertical amplifier p
lug-in unit is
d
esigne
d
for
u
se with Tektronix 7000-series Oscillosco
p
es. The 7A15 is α
Characteristic
P
erformance
wi
d
eband general purpose am
p
lifier, with
t
he upper fre-
Fre
q
uency
R
esponse
7500-series 7700-series
q
uency limit
d
etermine
d
mainly by the oscillosco
p
e in
System De
p
en
d
ent Oscillosco
p
e Oscillosco
p
e
which it is
u
se
d
. For exam
p
le, the 7Α 15 use
d
with
t
he 7504
Up
p
er Ban
d
width 60 MHz
75 MHz
oscilloscope will
h
ave α System Ban
d
width of 60 mega-
hertz ; an
d
when use
d
with
t
he 7704 oscilloscope, the
(DC Coupled)
system ban
d width will be 75 megahertz. Α
P
OLARITY
L
ower Bandwi
d
th
switch provides α means of inverting the d
is
p
lay. The 7Α 15
can be operate
d in any
p
lug-in com
p
artment of the 7000-
(AC Cou
p
le
d
)
series oscilloscopes .
W ithout P robe
2 h
ertz or less
This instrument will meet the electrical characteristics
listed in Table 1-1 following complete calibration as given
in Section 5. The p
erformance check proce
d
ure given in
Section 5 p
rovi
d
es α convenient method of checking instru-
ment
p
erformance without making internal a
d
justments.
SECTION 1
S PE CI
F
I
CA
ΤΙΟΝ
Change information, if any, affecting this section will be found at the rear of the manual.
T
he following electrical characteristics are valid over the
Capacitance 20 picofara
d
s within 1 .5
p
icofarad
state
d
environmental range for instruments calibrate
d at an
ambient tem
p
erature of +2 ρ°ς to +30°C, an
d
after α five R an
d
C P roduct
W
ithin 1°/ο over all
d
eflection factor
minute warmup unless otherwise noted .
settings
Deflection Factor
Calibrate
d R
ange
GAIN
C
h
aracteristic
Gain
R
atio
Accuracy
Uncalibrate
d
(Variable)
TABLE 1-1
ELECTRICAL
C
HARACTERISTICS
P
erformance
5 mV/
d
iv to 5 V/
d
iv ; 10 ste
p
s in α
1, 2, 5 se
q
uence.
W
ithin 2% of GAIN
ad
juste
d
at 10
mV/
d
iv .
W
ith Ρ6053
P
robe Ι 0.2
h
ertz or less
Maximum Input 500 V (DC +
P
eak AC) . AC com-
Voltage
I
p
onent 1 kHz or less .
In
p
ut R an
d
C
R
esistance 1 1 megohm within 2°/ ο
7Α15
Maximum Input 0.5 nanoam
p
ere or less, 0
°
C to
Gate Current
~ +35°C.
2 nanoam
p
ere or less, +35
°
C to
+50°C.
Displaye
d
N
oise 0 .06
d
ivision or less at 5 mV/
d
iv
(Tangentially measure
d
in 7700-series oscillo-
Measured) scope.
DC Drift
Drift
W
ith Time
(Ambient Tem-
perature and
Line Voltage
Constant)
Continuously variable
b
etween cali-
brate
d
ste
p
s; exten
d
s
d
eflection
factor to at least 12 .5 V/
d
iv .
Short Term
250 microvolts/minute (P-P) or
P
ermits a
d
justment of
d
eflection
0.05
d
ivision (whichever is greater)
factor for all 7000-series oscillo-
in any one minute, after one h
our
sco
p
es .
warmu
p
.