Contacta HLD7 User manual

1
User Guide
October 2016
HLD7
Hearing Loop Driver

2

3
Contents
Product Overview
Components
Connections
Setting up the Driver
Loop Congurations / Set Up
Troubleshooting
Technical Specication
Warranty
Standards
4
4
5-6
7-9
10-13
14-15
16
17
18
Contacta has a policy of continuous product development, therefore small specication changes
may not be reected in this manual. Images, labels, packaging, accessories and product colours
are subject to change without notice.

4
Product Overview
Components
Our HLD7 is a pioneering modular hearing loop driver for perimeter or
phased array congurations, designed for medium sized facilities such
as meeting rooms, lecture halls, places of worship and small theatres.
The HLD7 is a high eiciency hearing loop driver, meaning that it emits
very little heat from its compact packaging.
1
234
5
1. User Guide
2. Hearing Loop Stickers x 2
3. Rubber Feet x 4
4. Hearing Loop Driver
5. Power Supply
6. IEC Power Lead
You will also need: loop cable or at copper tape of a length and
type, which will be determined by the loop design. The driver requires
an audio feed such as a microphone or sound system. Loop test
equipment is also required as detailed on page 6.
6

5
1. Power Supply Input.
Power Sources - The use of unauthorised power supplies may
cause damage to the unit and may invalidate the warranty.
2. External Port - Status Indicator (Volt-free relay contacts).
3. Phantom power indication for microphone.
4. Input 1 (Microphone) - Balanced XLR with switchable 12VDC
phantom power or ¼” unbalanced TRS jack for electret
microphone with 5VDC power via 680Ω load.
5. Input 2 (Line) - Balanced XLR or ¼” TRS jack to ohmically isolated
input.
6. Expansion.
CAUTION: For connection to other Contacta systems only.
7. Feature - External monitor & control, Contacta communications
processor.
CAUTION: This is not a telecommunications port.
8. NL4 Loop Output Connection.
Connections
Rear Panel Connections:
1
2
34 5
67
8

6
Audio Connections:
2 1
3
Mic & Line
XLR connector
1: Screen/Shield
2: + (Signal Hot)
3: - (Signal Cold)
Mic
Unbalanced TRS Jack
Tip
Ring
Sleeve SOURCE
+ (Signal)
GND
Mic
Unbalanced Mono TS Jack
Tip
Sleeve SOURCE
+ (Signal)
GND
Line
Unbalanced Mono TS Jack
Tip
Sleeve
SOURCE
+ (Signal) hot
- (Signal) cold
Phantom Power
CAUTION: Route loop output cables as far away as possible from the
driver audio input cables.
Connect a twisted pair or quad core loop feeder cables to the supplied
NL4 connector (diagram below). Insert into Output Channel A/B
sockets on the rear of the driver.
Loop Connections:

7
Shows MIC level Shows LINE level Shows DRIVE level
Active on power on
Indication only - buttons have no eect, except unlock combination
To enter adjustment mode press
both MIC + and - simultaneously
In adjustment mode the
STATUS LED will ash
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
LOW SIG
STATUS
POWER
MIC LINE DRIVE
PERIMETER
PRIMARY
SECONDARY
contacta HLD7 12 3 4 5 6
- -
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
-20DB
STATUS
POWER
MIC LINE DRIVE
PERIMETER
PRIMARY
SECONDARY
contacta HLD7 12 3 4 5 6
- -
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
-20DB
STATUS
POWER
MIC LINE DRIVE
PERIMETER
PRIMARY
SECONDARY
contacta HLD7 12 3 4 5 6
- -
Setting up the Driver
Front panel overview:
Driver modes
Normal operation mode – The driver is fully functional. The controls
on the front do not change the driver operation.
Adjustment mode – In this mode one can adjust all of the levels using
the + or – buttons.
Pressing the MIC + or - will
adjust the MIC input gain;
adjustments are in 1dB steps.
LEDs show the MIC’s level
after fader
Pressing the LINE + or - will adjust the
LINE input gain; adjustments are in 1dB
steps. LEDs show the LINE level after
fader. If input is low the LOW SIG LED
will illuminate
Pressing the Drive + or - will
adjust the Drive output by
1dB steps. LEDs show the
DRIVE level in approx 0.5A
increments
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
LOW SIG
STATUS
POWER
MICLINEDRIVE
PERIMETER
PRIMARY
SECONDARY
2.5 5 7.5 10
contacta HLD9
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
LOW SIG
STATUS
POWER
MICLINEDRIVE
PERIMETER
PRIMARY
SECONDARY
2.5 5 7.5 10
contacta HLD9
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
LOW SIG
STATUS
POWER
MIC LINE DRIVE
PERIMETER
PRIMARY
SECONDARY
contacta HLD7 12 3 4 5 6
- -
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
LOW SIG
STATUS
POWER
MIC LINE DRIVE
PERIMETER
PRIMARY
SECONDARY
contacta HLD7 12 3 4 5 6
- -

8
You must rst be in adjustment mode (see page 9). To enter the
engineers mode, press both Line + and - simultaneously.
Engineers mode – In this mode there are additional items that can
be adjusted, such as driver type, phantom power and high frequency
compensation.
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
LOW SIG
STATUS
POWER
MICLINEDRIVE
PERIMETER
PRIMARY
SECONDARY
2.5 5 7.5 10
contacta HLD9
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
LOW SIG
STATUS
POWER
MICLINEDRIVE
PERIMETER
PRIMARY
SECONDARY
2.5 5 7.5 10
contacta HLD9
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
-20DB
STATUS
POWER
MIC LINE DRIVE
PERIMETER
PRIMARY
SECONDARY
contacta HLD7 12 3 4 5 6
- -
PAGE 1 allows you to select the driver operation; either perimeter,
primary or secondary. Always select the driver operation mode before
installing the driver in its rack mount bracket.
There are 5 PAGE settings, each identied by a ashing MIC LED:
PAGE 1 is LED 1, PAGE 2 is LED 2, etc.
Press both Line + and - simultaneously
to enter the Engineers’ mode
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
-20DB
STATUS
POWER
MIC LINE DRIVE
PERIMETER
PRIMARY
SECONDARY
contacta HLD7 12 3 4 5 6
- -
PAGE 1 is identied by
LED 1 ashing
Pressing the LINE + or - buttons
selects driver operation, Perimeter,
PRIMARY or SECONDARY
When you are ready to move
onto the next PAGE press the
DRIVE + button
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
-20DB
STATUS
POWER
MIC LINE DRIVE
PERIMETER
PRIMARY
SECONDARY
contacta HLD7 12 3 4 5 6
- -
CLIP
ACTIVE
PHTM
CL
IP
A
CTIVE
LOW SIG
STATUS
POWER
MIC LINE DRIVE
PERIMETER
PRIMARY
SECONDARY
contacta HLD7 12 3 4 5 6
- -
CLIP
ACTIVE
PHTM
CL
IP
A
CTIVE
LOW SIG
STATUS
POWER
MIC LINE DRIVE
PERIMETER
PRIMARY
SECONDARY
contacta HLD7 12 3 4 5 6
- -

9
• PERIMETER mode, for a single loop or (with a secondary driver)
two widely separated loops.
• PRIMARY mode, the rst and controlling driver of two in a phased
array loop layout.
• SECONDARY mode, the second driver of two in a phased array
loop layout.
Changing the driver type
You must be in engineers mode to change the driver type.
Ensure you have selected PAGE 1.
• When only this rst light is illuminated and the driver is in the
engineers mode, press either the LINE + or – to change the driver
type from PERIMETER, PRIMARY OR SECONDARY.
• When nished setting up the driver type, press the DRIVE – button
to take the driver out of the engineers mode and put if back into
the adjustment mode. The status light will begin to ash.
• Pressing the MIC (+ and -) buttons simultaneously will take the
driver back to the normal operation mode where the controls are
non-functional.
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
LOW SIG
STATUS
POWER
MICLINEDRIVE
PERIMETER
PRIMARY
SECONDARY
2.5 5 7.5 10
contacta HLD9
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
LOW SIG
STATUS
POWER
MICLINEDRIVE
PERIMETER
PRIMARY
SECONDARY
2.5 5 7.5 10
contacta HLD9
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
LOW SIG
STATUS
POWER
MICLINEDRIVE
PERIMETER
PRIMARY
SECONDARY
2.5 5 7.5 10
contacta HLD9
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
LOW SIG
STATUS
POWER
MICLINEDRIVE
PERIMETER
PRIMARY
SECONDARY
2.5 5 7.5 10
contacta HLD9
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
LOW SIG
STATUS
POWER
MICLINEDRIVE
PERIMETER
PRIMARY
SECONDARY
2.5 5 7.5 10
contacta HLD9
The three operating modes are:

10
*Assumes unit is properly connected and loop has continuity.
Loop Congurations / Set Up
PLEASE NOTE: The loop cable must be connected before powering up
the driver. Upon power up the loop is automatically analysed and set
up. If no loop is connected the status light will be solid red. To RESET
unplug the driver and wait 60 seconds minimum after all lights go out.
Perimeter Loop or Primary Driver Setup*
(Assumes unit is properly connected and loop has continuity)
1. Power up the driver and once the loop analysis (indicated by the
ashing LED sequence) is complete, conrm or select the correct
driver type (Perimeter or Primary). Instructions on changing driver type
on page 13.
2. Enter the “Adjustment Mode” by pressing the MIC (+ and - )
buttons simultaneously until the red status light ashes.
3. While in “Adjustment Mode” (red status light ashing) conrm that
the MIC, LINE and DRIVE levels are set to their minimum level by
individually holding in the - button of each for a few seconds.
4. Connect the input signal to the LINE input unless you are directly
connecting a microphone. If testing with our Test Signal Generator
(TSG), connect to the HLD7’s LINE input.
5. For either input signal (in adjustment mode) increase the
appropriate input level by pressing the - button until the rst yellow
LED illuminates (this will be solid if using a sine wave) or occasionally
ash if used on music or speech sources.
6. Bring the DRIVE level up by pressing the DRIVE + button until the
required level is reached.
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
LOW SIG
STATUS
POWER
MICLINEDRIVE
PERIMETER
PRIMARY
SECONDARY
2.5 5 7.5 10
contacta HLD9
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
LOW SIG
STATUS
POWER
MICLINEDRIVE
PERIMETER
PRIMARY
SECONDARY
2.5 5 7.5 10
contacta HLD9
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
LOW SIG
STATUS
POWER
MICLINEDRIVE
PERIMETER
PRIMARY
SECONDARY
2.5 5 7.5 10
contacta HLD9
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
LOW SIG
STATUS
POWER
MICLINEDRIVE
PERIMETER
PRIMARY
SECONDARY
2.5 5 7.5 10
contacta HLD9
CLIP
ACTIVE
PHTM
CLIP
ACTIVE
LOW SIG
STATUS
POWER
MICLINEDRIVE
PERIMETER
PRIMARY
SECONDARY
2.5 5 7.5 10
contacta HLD9