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ELECTRICAL
DATA
H 52005-301D
(2)
Each
oscillator has its frequency
indicated
on a cali-
brated dial which
covers a
r
a nge
of
3 to
1.
The s
ix
frequency
ranges
between
20 Hz
and
20 kHz are
sel
ected
b
y means
of
a
range
switch.
There
is
a
l
so a
fine
tune
control. The output
level
is adjusted
by
means
of
coarse
a
nd
fine
controls
.
Each
oscillator
is isolated
by
means of a
switch
when
the
output
level
of the
other oscillator
is
being
adjusted.
(3)
The two
oscillators are
connected in
parallel to the
attenuator which
has three switches
having
steps
of 10
dB,
1
dB and
0
.1
dB.
Various output load
conditions
a
re selected
by means
of
two
switches.
The
input is
monitored
by
means
of an
electronic
voltmeter.
The four
voltage
ranges
from
1. 5 V f
.
s. d.
to
25
V
are selected
by means of a range
switch.
3
.
Composite
instrument (TF 2005R)
Frequency
range
20
Hz
to
20
kHz
in
s ix
bands.
(Each
oscillator can
be
a djusted independently.)
Amplitude
Referenc
e
level
: Up to
+1
0 dBm from each oscillator.
Attenua.
t or range
:
111 dB in
0.1
dB
steps.
Harmonic distortion
Less than
0. 05%
between 63Hz and 6
kHz w hen
using
un-
balanced output
.
Genera~ly
less
than 0
.1
%
under
other
conditions.
lntermodulation
Below
-80
dB with
respect
to
the
wanted signal.
Hum
Bel
ow -80 dB with
respect to
t
he wanted
s ignal.
4.
Oscillator (TF 2100)
Frequency range
20Hz
to
20
kHz in
six
bands
.
Auxiliary
fine
control.
Frequency accuracy
±1%
±0.
2
Hz.
Output
power
+1
5
dBm
(31.
6
mW)
into 600
r..
Over
8
.
5 V
open
c
ircuit.
Output
con trol
At least 40 dB range of attenuation, by
continuously
variable
T-network.
Output impedance
600
r.
±20%
unba
lanced.
Frequency response
Over the
frequency
r ang
e
,
the change
in
output
level
is
less
than ±0.4
dB.
Distortion
Less
than 0.05
%
from
63Hz
to
6.3
kHz;
less
than
0.1
%
from
20Hz
to
20kHz.
Hum
Less
than 0.
01
% (-80
dB)
of
output
s
i
gnal, or -100
dBm,
whichever
is
the
greater
.
5
.
Attenuator
(part
of T
F
216
0/1
)
Frequency range
Attenuation
range
Chap
.
1
Page
2
20 Hz to 20 kHz w
ith
balanced output.
DC
to 550
kHz
with
unbalanced
output.
0
t
o
111
dB
in
0.
1
dB
steps.
Nov
.
79
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