Dact CT2-2 User Manual [ru]
CT1 and CT2
OUTLINE DRAWING AND DIMENSIONS
APPROX. DIMENSIONS (mm)
Dim.
Description
CT1
CT1
CT1
CT2
CT2
(1 deck)
(2 decks)
(4 decks)
(2 decks)
(6 decks)
B
Mounting plane to first terminal set
18
18
18
14
14
C
Total build-in depth
28
45.5
80.5
42
112
10 10 9 9 E
36 36 F
32 32 32 32
MAXIMUM RATINGS
Page 1 of 3
Audio Attenuators / Volume Controls
A Distance between terminal sets
D PCB width (bottom)
Total height when mounted on a PCB
PCB diameter (click-house for CT2)
-
10
36.5
32
SPECIFICATIONS
17.5
36.5
3 x 17.5
36.5
14.5
3 x 14.5
2 x 20.0
Note
Parameter
(conditions / comments)
Value
Unit
CT1 & CT2
1 Switching capacity
1
Note
Parameter
(conditions / comments)
Value
Unit
CT1 & CT2
Number of positions
24
Switching function
Shorting
2
Mechanical life
> 25,000
cycles
Switching torque
1.5
Ncm
Nut tightening torque
Max. 300
Ncm
Note
Parameter
(conditions / comments)
Value
Unit
CT1 & CT2
0,2,4,6,8,10,12,14,1
6,18,20,22,24,26,28,
30,32,34,38,42,46,5
3
Attenuation accuracy
(new)
+/- 0.05
dB
3
Matching accuracy (tracking)
(2 decks)
+/- 0.05
dB
5
Noise voltage
(10k, input to ground pin)
12.8
nV/Hz
6
Total harmonic distortion
(A = -6dB, fo = 1kHz)
Max. 0.0001
%
Page 2 of 3
1 Power dissipation
Operating ambient temp. range
1 Storage temperature range
MECHANICAL CHARACTERISTICS
(resistive load)
(each resistor, CT1 / CT2)
2V/2A
24V/0.6A
42V/0.4A
125 / 100
-25 to +70
-40 to +85
AC/DC
mW
deg.C
deg.C
Indexing angle
Gold plating, contacts
Gold plating, wiper
DC ELECTRICAL CHARACTERISTICS
Total resistance range
3 Total resistance accuracy
Attenuation steps
4 Contact resistance
Contact capacitance
Series inductance
impedance = 0),
(load input impedance =
(adjacent contacts)
(10 kOhm, input to ground)
(hard-gold)
(hard-gold)
(new)
(source output
infinite)
(new)
15
3
8
10,20,50,100,250,
500 (500:CT2 only)
0.1
0,60,infinite
Max. 0.01
Max. 0.2
1
deg.
um
um
kOhm
%
dB
ohm
pF
uH
AC ELECTRICAL CHARACTERISTICS
Note
4 -3dB bandwidth
Notes
1 Exposure to maximum rating conditions for extended periods of time may affect device reliability
2 One cycle is defined as a full rotation from one end stop to the other and return
3 Typical values at +25 deg. C ambient temperature. Output (pin 2) unloaded
4 Measuring probe input capacitance 1 pF
5 Theoretical value for an ideal 10k resistor
6 Measured with Panasonic Audio Analyzer VP-7722P
Parameter
(conditions / comments)
(10k, A = -6dB)
Value
CT1 & CT2
50
Unit
MHz
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