null  User manual
Broadcast Devices, Inc.
CTD-1 Composite Decoder/AES
Generator
TECHNICAL REFERENCE MANUAL
Broadcast Devices, Inc.
5 Crestview Avenue
Cortlandt Manor, NY 10567
Tel. (914) 737-5032
Fax. (914) 736-6916
REV: A 02/05
Table of Contents
The CTD-1 Composite Decoder/AES Transmitter
I.
Introduction
A. Unpacking and Inspection
B. General Description
II. Specifications
III. Installation
IV. Warranty
V. Schematic Diagrams
A. Functional Diagram
B. Setup Diagram
C. Applications Diagram With CDS-300/302
D. CTD-1 Schematics
Introduction
The CTD-1 Composite Decoder/AES Transmitter is intended to be used in conjunction with the
BDI CDS-300 or CDS-302 composite switcher DA products. This module can be plugged directly
into these products. The CTD-1 will accept the selected composite signal, decode it back to
left/right, and then convert it to a pair of AES3 compatible streams suitable for input to digital
exciter equipment. Suggested uses include converting any composite stereo generator or STL to
an AES signal compatible with modern digital AM/FM digital exciters. As an option, it is also
possible to output a balanced +4 dBm left/right output for analog decoder applications. See
setup diagram at rear of this manual for more information.
A. Unpacking and Inspection
Carefully unpack the unit after receipt and inspect for damage that may have occurred during
shipping. If damage is noted, contact the shipper immediately and file a damage claim. The
contents of the package have been insured to cover total replacement cost. Make certain that the
package contents are the same as noted on the packing slip. If not, contact Broadcast Devices,
Inc.
General Description
The CTD-1 contains a high quality, phase locked loop stereo decoder, analog to digital
converter and AES transmitter. Stereo composite audio is routed to the stereo decoder where it is
converted back to analog and then routed to a 24 bit analog to digital converter. The output of the
converted is then routed to an AES transmitter/DA where it is outputted on a pair of XLR
connectors at the rear of a CDS-300 or CDS-302 composite switcher/DA. In this configuration it is
possible to drive a pair of composite outputs for older analog exciters and a pair of digital input
exciters simultaneously with the same composite source. It is also possible to output a balanced
+4 dBm left/right output to the CDS series XLR connectors if AES output is not needed.
Specifications
Composite Input Impedance:
Output Impedance:
Number of outputs:
Sample rate:
Pre/de emphasis:
100K unbalanced – Accepts 3.5 Volt RMS composite
110 ohm balanced digital 600 ohms balanced – analog
2 – AES3 or 1 – analog left/right
32, 44.1, 48 or 96 KHz
50 or 75uS selectable.
II. Installation
A. Initial Configuration Digital Output
This installation description assumes the customer will install the CTD-1 in an existing CDS300/302.
1. Remove power and then unit top cover and locate a header with four jumpers. Make note
of the position of these jumpers and then remove them.
2. Install the CTD-1 module with its connector plugging into the header from which the
jumpers where removed. The module faces you as viewed from the front of the unit. Use
extreme care to install the module so that the connector is plugged in correctly. Damage
can occur if the module is plugged in incorrectly. Before powering the unit back up make
sure that the connector is seated properly by observing that it is not plugged in
incorrectly.
3. After verifying that the module is plugged in correctly, power up the CDS-300/302 and
apply normal composite level audio to the input of the switcher. Connect the AES outputs
to suitable AES equipped exciters or BDI AES-302 digital audio switcher/DA and observe
modulation on a suitable modulation monitor. If level adjustment is necessary, there are
two options for adjusting level. If the overall level needs adjustment, turn VR1 up or down
as necessary to maintain desired modulation level. If balance between left and right
channels is not correct, this can be compensated for by adjusting VR2 and 3. VR2 is left
channel and VR3 is right channel. Refer to the setup diagram at the rear of the manual
for location of these controls.
4. The CTD-1 is normally shipped from the factory with 75 uS pre emphasis enabled for
North American applications and 50 uS for European applications. Jumpers JP3,4 are
installed for pre emphasis. For de emphasized or flat frequency response audio output,
remove jumpers JP3 and JP4.
5. Sample rate adjustment. The CTD-1 is normally shipped configured for 44.1 KHz sample
rate. Other sample rates are possible including 32, 48 and 96 KHz. To adjust sample rate
to other than 44.1 KHz, consult the sample rate chart on the setup diagram page at the
rear of the manual.
Initial Setup for Analog output
1. Follow steps 1-4 above
2. Remove power and locate L1,2,3,4D jumpers on CTD-1 board and remove them with a
soldering pencil.
3. Install jumpers across L1,2,3,4A just to the left of the pads in the above step. With this
change, the output presented to the rear XLR connectors will be a +4 dBm balanced
stereo output. Output 1 is left channel and output 2 is right channel.
IV. Warranty
Broadcast Devices, Inc. products are warranted against failure due to faulty materials or
workmanship for a period of one year from the date of shipment to the ultimate user. The
warranty covers repair or replacement of defective parts at the factory, provided the unit has
been returned prepaid by the user. All shipments to the factory shall have affixed to the outside of
the container an R. A. number obtained from the factory. The above warranty is void if the unit
has been modified by the user outside of any recommendations from the factory or if the unit has
been abused or operated outside of its electrical or environmental specifications. If customer
conducted field tests suggest that the unit may be faulty, whether or not the unit is in warranty, a
full report of the difficulty should be sent to Broadcast Devices, Inc. factory at Cortlandt Manor,
New York. The office may suggest further tests or authorize return for factory evaluation.
Units sent to the factory should be well packed and shipped to Broadcast Devices, Inc. 5
Crestview Avenue, Cortlandt Manor, NY 10567. Remember to affix the R.A. number to the
outside of the carton. Any packages received without such R.A. number will be refused. Note:
freight collect shipments will also be refused. When the unit has been received, inspected and
tested, the customer will receive a report of the findings along with a quotation for recommended
repairs, which are found falling outside of the standard warranty. Units returned for in-warranty
repairs which are found not to be defective will be subject to an evaluation and handling charge.
In-warranty units will be repaired at no charge and returned via prepaid freight.
Out-of-warranty units needing repair require a purchase order and will be invoiced for parts,
labor, and shipping charges.
When ordering replacement part, always specify A) Part number or Description, and Quantity;
B) Date of Purchase, Where Purchased; C) Any Special Shipping Instructions. Always specify a
street address, as shipping companies cannot deliver to a postal box.
Broadcast Devices, Inc. is not responsible for any other manufacturer’s warranty on original
equipment. Nor are we responsible for any failure, damage, or loss of property that may occur
due to the installation or operation of our equipment outside of recommended specifications.
V. Schematic Diagrams
A.
B.
C.
D.
E.
Simplifed Block Diagram
Functional Diagram
Setup Diagram
Applications Diagram
CTD-1 Schematic
5
4
3
2
1
L1A
Balanced Left Output
2
L2A
J1
Left Output
2 T2
1
L1D
8
Phase Lock Loop
L2D
VR1
VR2
Stereo Decoder
100K
Analog Pre emphasis
4
ADC/AES Transmitters
5
6
Schott-37246
2 T2
1
8
VR3
4
MPXIN
D
3
1
D
L3D
4
Schott-37246
2
L4D
Right Output
5
6
J2
3
L3A
Balanced Right Output
L4A
C
4
JP4
1
JP3
C
For Pre Emphasis, Install Jumpers
Note: Optional Balanced Left/Right Output is
selectable by removing L1,2,3,4D and placing
Jumpers in L1,2,3,4,A.
B
B
CTD-1 Functional Block Diagram
A
5
4
3
2
A
1
5
4
3
2
1
VR1 - Composite Level
CTD-1 Rev. E
D
D
VR3 - Right Level
L3D
L1A
L1D
L4A
L4D
L2A
L2D
Jumpers shown in
digital output position
VR2 -Left Level
Left Ch. Pre Emphasis
L3A
JP3
C
C
Install for Pre emphasis
Right Ch. Pre Emphasis
ON
JP4
1 2 3 4 5 6 7 8 9 10
44 KHz
S1
B
ON
1 2 3 4 5 6 7 8 9 10
ON
B
48 KHz
32 KHz
ON
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10
ON
1 2 3 4 5 6 7 8 9 10
96 KHz
44 KHz
A
A
CTD-1 Set Up Diagram
5
4
3
2
1
5
4
3
2
1
CDS-300/302 Composite Switcher/DA
D
D
Exciter 1
S?
Main
Processor
Rear Panel
Exciter 2
SW DPDT
Backup
Processor
Front Panel
C
C
RBDS
Generator
Test Gear
Digital
Exciter
1
Left+
Left-
B
Left
Analog to
Digital
Converter
PLL
Stereo Decoder
Right
B
AES3 OUT
RS485
Line
Driver
Digital
Exciter
2
Right+
Right-
A
A
Model CTD-1 Composite to Digital Module
5
4
3
2
1
Date: 2/15/2005
Time : 01:39:17 PM
R1
U11
+5V
2 T1
1
2
NOTES:
TXP1
8
1. AGND & DGND TIED 1 POINT ONLY.
D +5V
RST~
4.7K 0805
R30
R61
7
2 T2
1
5
C1
.1 0805
GND
18
9
MCK
SCK
FSYNC
SDATA
4
11
D
5
6
7
8
+5V
4
EN
12
EN
D
VCC
16
GND
8
4.7K 0805
8
TXP2
5
6
TXN2
54R9 1/4W
R62
10
D
U16C
10
.1 0805
3
C21
.1 50V
9
D
U16A
1
74LS02
U16D
D
2
11
74LS02
10uF 6.3v
D
10uF 6.3v
13
12
D
+5VA
74LS02
D
D
C54
C57
+5V
1
3
5
7
9
11
13
15
.1 0805
.1 0805
MPXL+
MPXL+
C59
.22 0805
MPXL-
1
2
3
4
5
6
7
8
9
10
11
12
13
14
MPXL+5V
C67
.1 0805
C66
10uF 6.3v
MPXR+
U8
C60
.047 0805
D
R29
C71
8
RST~
J5
2
4
6
8
10
12
14
16
+5V
C33
1uF 10V
D
26LS31
CR2
MMBD7000
R32
Schott-37246
54R9 1/4W
+5V
C53
C56
+5V
CKS0
CKS1
DFS0
DFS1
HPFE
MCLKSEL
R28
6
+5V
3. ALL RESISTORS 5% EXCEPT AS NOTED.
D
+5VA
R63
4.7K 0805
4.7K 0805
R27
4.7K 0805
SW DIP-10
4.7K 0805
R31
+5V
FSYNC
VREFL
AVSSL
VCOM
AINL+
AINLCKS0
DVDD
DVSS
OVF
PDN
DIF
M/S~
LRCK
BICK
VREFR
AVSSR
TEST
AINR+
AINRAVDD
AVSS
BVSS
DFS1
HPFE
DFS0
MCLK
CKSI
SDTO
28
27
26
25
24
23
22
21
20
19
18
17
16
15
MPXR+
R56
10 0805
C61
.047 0805
MPXR-
MPXR+5VA
C63
.1 0805
DFS1
HPFE
DFS0
C64
10uF 6.3v
U18
LM2940MP5
+15V
1
C95
10uF 25V
C97
.1 0805
AK5385A
Vi
Vo
+5V
3
C96
10uF 6.3v
C98
.1 0805
SCK
SDATA
MCLK
J4
-15V
+15V
INP
MPXIN
BNCIN1P
BNCIN2P
C99
BNCIN1N
+5V
+5V
U10
OSC
3
+5V
C20
.1 0805
2
GND
OE
1
+5V
+5V
U17
4
VCC
OSC
11MHZ
3
+5V
C84
.1 0805
2
D
GND
OE
1
U12A
D
24.576MHZ
D
1
3
5
7
9
11
13
15
17
19
21
23
25
27
2
4
6
8
10
12
14
16
18
20
22
24
26
28
LOUT+
FB L1A
TXN1
OMIT
L1D
J8-3
BNCIN1P
J9-3
BNCIN2P
J8-M1F2
BNCIN1N
J8-M2F1
J9-M1F2
BNCIN2N
J9-M2F1
ROUT+
FB L2A
TXN2
OMIT
L2D
LOUT-
FB L3A
TXP1
OMIT
L3D
ROUT-
FB L4A
C70
.1 0805
U16B
U12B
10 S
13 R
12 D
11
74F74
GND
4 S
1 R
Q 5
2 D
3
5
3
4
5
6
13
12
11
10
Q 6
4
Q 9
Q 8
74F74
6
74LS02
D
D
I3A
I2A
I1A
I0A
I3B
I2B
I1B
I0B
U13
74F153
HDR14x2
16
VCC
.1 0805
8
4
D
BNCIN2N
24MHZ
14
+5V
7
D
20
19
18
17
16
15
14
13
12
11
19
CS8404
+5V
S1
1
2
3
4
5
6
7
8
9
10
VD+
2. VD+ & VA+ TIED ONLY AT VREG.
+5V
Schott-37246
54R9 1/4W
13
TXN1
5
6
15
GND
GND
TXM2
TXM1
TXM0
4
14
DIGOUT
20
17
2
4
+5V
TXP
TXN
C6/C2
C1/FC0
PRO
C7/C3
CRE/FC1
M2
M1
M0
V
C/SBF
U
C9/C15
EM1/C8
EM0/C9
CBL/SBC
RST
14
R6
4
3
2
1
24
23
22
21
9
10
11
12
13
14
15
16
7
U1
R77
470K 0805
R5
54R9 1/4W
R2
3
+5V
4.7K 0805
R3
4.7K 0805
4.7K 0805
4.7K 0805
1
D
VCC
YA
YB
7
9
MUX
S1
S0
EA
EB
2
14
1
15
CKS0
CKS1
+15V
+15V
-15V
-15V
+5V
+5V
L4D
TXP2
OMIT
AGND
D
D
<>
Broadcast Devices, Inc.
11.2896MHZ
Title
CTD-1 COMPOSITE MULTIFUNCTION BD
Size
B
Date:
Title: \\Main\e\cadence\CTD-1RE.DSN
Document Number
Sunday, November 21, 2004
Rev
E
Sheet
1
of
2
Date: 2/15/2005
Time : 01:40:10 PM
C83
R33
+12V
R34
150K 1% MF 0805
C35
750K 0805 C36
100K
R36
30K 0805
.1 0805
C34
Y1
R39
.1 0805
+15V
-15V
-15V
+5V
+5V
U6
C47
.1 0805
R50
27K 0805
C51
.047 0805
820K 0805
CR1
MMBZ5242B
R52
R51
680pF 0805
27K 0805
C37
JP3
JMP2
C72
C45
.0068 0805
R35
10.0K 1% MF 0805
MPXR+
R38
ROUT+
6800pF 0805
TDA1592
C44
.0068 0805
C101
200pF MICA 1210
C39
27R 1210
-15V
C41
JP1
JMP2
.1 0805
RIGHT
22uF 25V
R37
10.0K 1% MF 0805
VR2 C85
4
C48
68pF 0805
150 0805
10K 0805
R44
47K 1% MF 0805
10K 22uF 25V
3
VREF
ROUT-
10uF 25V
NE5532AD8
1
2
U7A
C86
22uF 25V
C49
MPXR-
C87
22uF 25V
C46
8
+12V
27K 0805
C100
R46
27R 1210
R47
10.0K 1% MF 0805
R49
C50 10.0K 1% MF 0805
.1 0805
+15V
10uF 25V
200pF MICA 1210
6
NE5532AD8
7
5
VREF
U7B
C102
680pF 0805
C103
C52
R53
10.0K 1% MF 0805
MPXL+
R55
LOUT+
6800pF 0805
JP4
JMP2
200pF MICA 1210
C55
27R 1210
-15V
C58
C80
.1 0805
JP2
JMP2
LEFT
22uF 25V
R54
10.0K 1% MF 0805
C89
VR3
4
R48
47K 1% MF 0805
+15V
R42
R41
10K
22uF 25V
3
VREF
LOUT-
10uF 25V
NE5532AD8
1
2
U9A
C90
22uF 25V
MPXL-
C91
22uF 25V
C68
R58
27R 1210
R59
10.0K 1% MF 0805
C65
8
C43
68pF 0805
100K 0805
AGND
R40
+
R43
20
19
18
17
16
15
14
13
12
11
-
.1 0805
456KHZ
68.0K 0805
MPXIN
PILOT
IDENT
VREF
SNC
HCC
CDEER
CDEEL
FBR
ROUT
+
.1 0805
PLL
OSC
GND
IREF
Vp
INFI
PUFO
NDET
FBL
LOUT
-
C40
1
2
3
4
5
6
7
8
9
10
R60
C69 10.0K 1% MF 0805
.1 0805
+15V
10uF 25V
200pF MICA 1210
6
+5V
VREF
R86
200K 0805
U19
LM385M3-2.5
NE5532AD8
7
5
U9B
+
C38 .01 0805
+15V
-
22uF 25V 22uF 25V
+
VR1
-
C82
MPXIN
VREF
R87
OMIT
C93
10uF 25V
C94
.1 0805
Broadcast Devices, Inc.
Title
CTD-1 MPX DECODER ANALOG L-R OUT / A-D
Size
B
Date:
Title: \\Main\e\cadence\CTD-1RE.DSN
Document Number
<Doc>
Sunday, November 21, 2004
Rev
E
Sheet
2
of
2
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement