TSL AMU1-CHD+MK2 User manual

AMU1-CHD+MK2
AUDIO MONITORING
UNIT
Handbook
TSL Products
Units 1-2, First Avenue, Globe Park, Marlow, Bucks, SL7 1YA
Telephone [phone]

AMU1-CHD+mk2 Issue 1
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AMU1-CHD+mk2 Issue 1
SAFETY
Installation.
Unless otherwise stated TSL equipment may be installed at any angle or position within an
operating temperature range of 5°- 30°C.
All TSL equipment conforms to the EC Low Voltage Directive:
EC Low Voltage Directive (73/23/EEC)(OJ L76 26.3.73)(LVD).
Amendment: (93/68/EEC) (OJ L220 30.8.93).
In all cases the chassis of the equipment must be earthed on installation .
The external power supply provided with this product may be one of two types:
1. A Class 2 double insulated type with a ‘figure of eight’ mains input connector.
2. A Class or Level 3 type with an IEC mains input connector. This type offers a functional
earth and NOT A SAFETY EARTH via the earth pin of the IEC mains input connector to
the outer of the co axial power connector or the pin nearest the pip on the Lemo style
connector.
All metal panels are bonded together.
Check that the voltage selector setting (if fitted) and the fuse rating is correct for the local mains
supply.
Due consideration for cooling requirements must be given when mounting the equipment. It is
recommended that a 1RU of rack space, or a vent panel, should be left above and below the unit.
This unit requires rear support.
WARRANTY, MAINTENANCE AND REPAIR
All TSL equipment is guaranteed for one year from the date of delivery to the customer’s premises.
If the equipment is to be stored for a significant period, please contact TSL concerning a possible
extended warranty period.
Failure during warranty
If any TSL product should fail or become faulty within the warranty period, first please check the
PSU fuses.
All maintenance work must be carried out by trained and competent personnel.
If equipment has to be returned to TSL for repair or re-alignment, please observe the following
overleaf:

AMU1-CHD+mk2 Issue 1
TSL Returns Procedure
Please telephone [phone] and ask for Support who will provide a Returns Number.
This will enable us to track the unit effectively and will provide some information prior to the unit
arriving. Please do NOT return faulty equipment without first obtaining a returns number as this is
likely to result in a delay in the repair of the equipment.
For each item, this unique Returns Number must be included with the Fault Report sent with the
unit.
A contact name and telephone number are also required with the Fault Report sent with the unit.
Fault report details required.
•Company:
•Name:
•Address:
•Contact Name:
•Telephone No:
•Returns Number:
•Symptoms of the fault (to include switch setting positions, input signals etc):
Packing
Please ensure that the unit is well packed as all mechanical damage is chargeable. TSL
recommends that you insure your equipment for transit damage.
The original packaging, when available, should always be used when returning equipment..
If returned equipment is received in a damaged condition, the damage should be reported
both to TSL and the carrier immediately.

AMU1-CHD+mk2 Issue 1
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AMU1-CHD+mk2 Issue 1
Contents
1.0 Introduction
2.0 Front Panel Controls and Indicators
2.1 Input and Meter Selection Switches
2.2 Monitoring select Switch
3.0 Pin-out Details
3.1 Analogue XLR Connectors
3.2 AES XLR connectors
3.3 Analogue Output connector – D25 Socket Pin out
3.4 AES Input/Output connector
3.5 DIP switch configuration functions
4.0 Notes
5.0 General Notes
6.0 Specifications
7.0 Front and rear view
8.0 Block Schematic

AMU1-CHD+mk2 Issue 1
1.0 Introduction
The AMU1-CHD+ mk2 is a 1RU x 320mm deep Audio Monitoring Unit with two 26 segment
bargraphs for audio level measurement.
The following features are standard:
•Two switch selectable stereo analogue inputs
•Four AES /EBU inputs
•Two HD/SDV auto sensing inputs
•Out-of-phase error indication
•EBU Digital and PPM metering scales
•Encoded PAL/NTSC composite or SDI output (Switch selectable)
•Re-clocked serial output of the selected input
•Integral loudspeaker system
•40 Watt total amplifier power with 12VDC input
•Headphone outputs with LS muting
•Two 12V DC inputs
•Stereo /multi channel line outputs
•Two decoded AES outputs
•Variable line output
2.0 Front Panel Controls and Indicators
2.1 Input and Meter Selection Switches
Digital Source Select Selects AES 1-2 and 3-4 (in conjunction with the channel
switch) and SDI 1 & 2 Groups 1-4
Channel Select Selects AES1,2,3 and 4 and pairs 1 (D1) and 2 (D2) from both the
SDV inputs. Analogue 1 and 2 are also selected in position Anl 1
and Anl 2.
Meters Left Channel is fed to the left bargraph and Right Channel is fed to
the right bargraph.
Phase Momentary phase reverse between A1 and A2 pairs. A non
latching push switch with Red/Green LED indicates phase. Push to
reverse.
Volume Control Allows the audio level to be varied.

AMU1-CHD+mk2 Issue 1
2.2 Monitoring select Switch
This switch allow stereo, Left, Right and Mono to be monitored
from the internal loudspeakers and line outputs.
N.B. Position D is spare.
3.0 Pin-out Details
3.1 Analogue XLR Connectors
C PIN FUNCTION
ANALOG 1 1 GND
ANALOG 1 2 1 IN+
ANALOG 1 3 1 IN-
ANALOG 2 1 GND
ANALOG 2 2 2 IN+
ANALOG 2 3 2 IN-
3.2 AES XLR Connectors
C PIN FUNCTION
AES1 1 GND
AES 1 2 1 IN+
AES 1 3 1 IN-
AES 2 1 GND
AES 2 2 2 IN+
AES 2 3 2 IN-

AMU1-CHD+mk2 Issue 1
3.3 Analogue Output Connector – D25 Socket Pinout on unit, Plug (shown) on mating
cable.
D 25 SOCKET
ON AMU
AUDIO OUTPUTS
PIN NO FUNCTION
1
14
2
15
3
16
4
17
5
18
6
19
7
20
8
21
9
22
10 A2+ (FR)
23 A2- (FR)
11 Ground
24 A1+ (FL)
12 A1- (FL)
25 Ground
13 N/C
Note; this is a generic pin out, the outputs
available are indicated in the table.
(N.B. These are analogue outputs of digital inputs)

AMU1-CHD+mk2 Issue 1
3.4 AES Input/Output Connector – D25 Socket Pinout, Plug (shown) on mating cable.
D 25 SOCKET
ON AMU
AES INPUTS/OUTPUTS
PIN NO FUNCTION
1 Ch1&2 Input 1+
14 Ch1&2 Input 1-
2 Ch3&4 Input 2+
15 Ch3&4 Input 2-
3 Ch5&6 Input 3+
16 Ch5&6 Input 3-
4 Ch7&8 Input 4+
17 Ch7&8 Input 4-
5 Ch1&2 Output 1+
18 Ch1&2 Output 1-
6 Ch3&4 Output 2+
19 Ch3&4 Output 2-
7 N/C
20 N/C
8 N/C
21 N/C
9 N/C
22 Ground
10 Ground
23 Ground
11 N/C
24 Ground
12 Ground
25 Ground
13 Ground
To use an unbalanced input pin 17 must be grounded. D-25 pins 10, 12,
17, 13, 22, 23, 24 and 25 are available for this purpose.

AMU1-CHD+mk2 Issue 1
3.5 Configuration Switch Functions (subject to change, Y05 s/w)
SWITCH SECTION FUNCTION
1 PPM – Up/ EBU Digital – Down
2 Peak Hold OFF-Up
3 Internal speaker Mute- Up
4 Calibration Level – see below
5 Calibration Level – see below
6 Calibration Level – see below
7 Not used
8 Composite out-Up/SDI \Down
The level configuration switches on the HDC2 board operates in a “2’s complement” manner the
relationship between the dBfs level setting in the digital domain and the dBm level setting in the
analogue domain. The “zero” position with all switches in the down position is designed to give
0dBm out for a level of -18dBfs in digital space. See below for configuration
SW4 SW5 SW6 FUNCTION
UP UP DN -24dBFS
DN UP DN -22dBFS
UP DN DN -20dBFS
DN DN DN -18dBFS
UP UP UP -15dBFS
DN UP UP TBD
UP DN UP TBD
DN DN UP TBD
(See Notes 4.0)

AMU1-CHD+mk2 Issue 1
4.0 Notes
There are no user adjustable assemblies/components within this unit.
This unit requires rear support when rack mounted.
In order to affect status changes of the unit using the rear DIP switch, the unit will require re
powering before the changes take effect.
Output analogue levels are adjustable over the following range:
0dBm = 0.775V into 600Ωi.e. 1mW power dissipation.
0dBu = 0.775V RMS = PPM 4.
Nominally, -18 dB ref 0FS = 0dBu output.
European line up : -18 dBu
American line: -20 dBu
5.0 General Notes
Please note that some American equipment has the function of the XLR pins 2 & 3 reversed.
TSL product is wired to the European standard
The screw locks on the D25 connectors use UNC 4-40 standard threads.

AMU1-CHD+mk2 Issue 1
6.0 AMU1- CHD+mk2 Technical Specifications
Power Supply
Supply Voltage 12V DC
Power Consumption 50 watts.
Physical Dimensions
Height 44mm (1RU)
Width 483mm (19”)
Depth 320mm
Weight 4500gm
Analogue Inputs 1 - 2
Connector Type XLR Female 3 pin. Pin 1 Gnd, Pin 2 hot, Pin 3 cold.
Signal Balanced line level audio.
Frequency Response 30Hz to 25kHz
Impedance >20kΩ
Inputs AES 1, 2, 3 & 4
Connector Type XLR Female 3 pin. Pin 1 Gnd, Pin 2 hot, Pin 3 cold.
Standard AES3 (1994) at 48kHz, 44.1kHz or 32kHz
Impedance 110 ohm (balanced.)
Input, HD/SDV 1 &2
Connector Type BNC.
Standard 4:2:2 component with embedded 48Khz audio.
(SMPTE 259M, 292M and 424M)
Impedance 75ohm
Line Output.
Connector XLR 3 pin Male
Impedance 50Ω
Output Levels Through level control with 0dB gain.
Fixed Line O/P Available on D25 (If selected on front panel)
Headphone Output.
Connector Stereo Jack socket type A
Impedance 600Ω
Output Levels Through level control with 0dB gain.
De embedded output
Connector 25 way D type
Impedance 110 Ohm
Output Groups 1, 2, 3 and 4
Video Output
Connector BNC
Impedance 75 Ohm
Output Composite video or SDI (selectable)

AMU1-CHD+mk2 Issue 1
Re-clocked Output
Connector BNC
Impedance 75 Ohm
Output Re-clocked serial output of the SELECTED input HD/SDV
AES Output
Connector AES I/O, 25 way D type (See section 3.4 for details)
Impedance 110 Ohm
Output Selected SDI group.
HD Standards Supported
1080i/50
1080i/59.94
1080i/60
720p/50
720p/59.94
720p/60
Performance
Response 70Hz to 20KHz
Electrical Distortion Better than 0.1%
Hum and noise Better than -70dB
SPL >98dB at 0.6 m
Amplifier Output 40 watts total power output
Digital Sample Rate 32 to 48KHz auto select

AMU1-CHD+mk2 Issue 1
7.0 Front and rear view

AMU1-CHD+mk2 Issue 1
8.0 Block Schematic