Tait TBCH2B, TBCH2A, TBCH1A Users Manual

5Installation

This chapter provides information on the site requirements for your
TB9400 equipment and also describes how to install the base station in a
standard 19 inch rack or cabinet.

If this is your first time installing a TB9400 base station, we recommend
that you read the entire chapter before beginning the actual installation.

TB9400 Installation and Operation Manual Installation 67
© Tait Limited April 2014

5.1 Before You Begin

5.1.1 Equipment Security

The security of your base station equipment is a high priority. If the site is
not fully secure, the base station should at least be locked in a secure
cabinet to prevent unauthorized access.

5.1.2 Grounding and Lightning Protection

Electrical Ground The base station modules are grounded by physical contact between the

module case and the subrack. To ensure a good ground connection you
must tighten each module retaining clamp securely (refer to “Final

Reassembly” on page 112 for the correct torque).

A threaded grounding connector is provided on the rear of the subrack for
connection to the site ground point (refer to “Connecting Up the Base

Station” on page 88 for more details).

Lightning Ground It is extremely important for the security of the site and its equipment that

you take adequate precautions against lightning strike. Because it is outside
the scope of this manual to provide comprehensive information on this
subject, we recommend that you conform to your country’s standards
organization or regulatory body.

5.1.3 Equipment Ventilation

Always ensure there is adequate ventilation around the base station.

Notice Do not operate it in a sealed cabinet. You must keep the
ambient temperature within the specified range, and we strongly rec­ommended that you ensure that the cooling airflow is not restricted.

Notice The cooling fans are mounted on the front panel and will only
operate when the panel is fitted correctly to the front of the subrack. To
ensure adequate airflow through the base station, do not operate it for
more than a few minutes with the front panel removed (e.g. for servicing
purposes).

5.1.4 Ambient Temperature Sensor

The ambient temperature reading for the base station is provided by the
temperature sensor located on the front panel circuit board.

68 Installation TB9400 Installation and Operation Manual

© Tait Limited April 2014

5.1.5 Cabinet and Rack Ventilation

The cooling airflow for the base station enters through the front panel and
exits at the rear of the subrack. For optimum thermal performance, the
heated air that has passed through a base station must not be allowed to re­enter the air intakes on the front panel. Any space at the front of the cabinet
not occupied by equipment should be covered by a blanking panel. Refer
to Figure 5.1 on page 70.

To allow enough cooling airflow through a cabinet-mounted base station,
we recommend the following:

■ an area of at least 23in

holes in front of the air intakes for the fans for each subrack; for
example, thirty 0.25x3.3in (6 x85mm) slots will allow the
recommended airflow

■ a vent in the top of the cabinet with an area of approximately 23in

(150cm2) per subrack, or a similar area of ventilation per subrack at the
rear of the cabinet behind each subrack

■ a 2U gap at the top of the cabinet.

Notice The ventilation opening must be unrestricted. If the slots or
holes are covered with a filter, mesh or grille, the open area must be
increased to allow the same airflow as an unrestricted opening.

2

(150cm2) of unrestricted ventilation slots or

2

Auxiliary Extractor
Fans

The maximum ambient temperature entering the cabinet must not exceed
+140°F (+60°C).

If you are installing multiple subracks in a cabinet, ensure that there will be
enough cooling airflow through the cabinet after the equipment has been
installed. For example, the recommended maximum number of subracks in
a 38U cabinet is five, as shown in Figure 5.1 on page 70.

If the base station is installed in a rack or cabinet with other equipment with
different ventilation requirements, we recommend that the base station be
positioned below this equipment.

The base station does not require auxiliary extractor fans mounted in the
top of the cabinet. If your cabinet is already fitted with fans, the following
procedures apply:

■ if there are six or more 4.75in (12cm) fans, each capable of extracting

■ if there are fewer than six fans, you must remove them and ensure the

3

94.2 ft

per minute (160m3 per hour), they must run continuously

vent in the top of the cabinet has an area of approximately 23in

2

(150cm2) per subrack.

If you have any other configuration, the performance of your system will
depend on how closely you comply with the base station airflow
requirements described above.

TB9400 Installation and Operation Manual Installation 69
© Tait Limited April 2014

Figure 5.1 Typical cabinet ventilation requirements

b

8in
(20cm)

side view front view

2U

c

top view

≥7in
(≥17.5cm)

e

d

c

ventilation slots

b

blanking panels

c

70 Installation TB9400 Installation and Operation Manual

airflow entry

d

airflow exit path

e

© Tait Limited April 2014

5.2 Unpacking and Moving the Subrack

The subrack is packed in a strong corrugated cardboard carton with top and
bottom foam cushions. To prevent personal injury and damage to the
equipment, we recommend that two people unpack and move the subrack.
To remove the subrack from the carton, follow the procedure illustrated in

Figure 5.2.

Caution A subrack complete with modules can weigh up to 46lb
(21kg), or up to 53lb (24kg) complete with packaging. We recommend
that you have another person help you unpack and move the equipment.
The TBAA03-16 carrying handles will make it easier to move the
equipment once it has been unpacked. If necessary, remove the modules
from the subrack before moving it (refer to “Replacing Modules” on

page 101). In all cases follow safe lifting practices.

Figure 5.2 Unpacking the subrack

b

e

g

1. Cut the tape securing the flaps at the top of the carton and fold them
flat against the sides

2. Rotate the carton carefully onto its side
ensuring that none of the flaps is trapped underneath.

cd

f

hi

b.

c and then onto its top d,

TB9400 Installation and Operation Manual Installation 71
© Tait Limited April 2014

3. Slide the carton upwards over the foam cushions and lift it away e.

Remove the cushion from the bottom of the subrack

f.

4. Rotate the subrack and cushion carefully over the rear of the subrack

g so that it is the right way up with the cushion on top h. Remove

the cushion from the top of the subrack

i.

Disposal of
Packaging

If you do not need to keep the packaging, we recommend that you recycle
it according to your local recycling methods. The foam cushions are CFC­and HCFC-free and may be burnt in a suitable waste-to-energy combustion
facility, or compacted in landfill.

72 Installation TB9400 Installation and Operation Manual

© Tait Limited April 2014

5.3 Identifying the Equipment

You can identify the model and hardware configuration of the TB9400
modules by referring to the product code printed on labels at the rear of
each module. The meaning of each character in the product code is
explained in the tables below.

This explanation of product codes is not intended to suggest that any
combination of features is necessarily available in any one product.
Consult your regional Tait office for more information regarding the
availability of specific models and options.

Reciter Product
Codes

PA Product Codes

Product Code Description

T01-0110X

T01-0110X-XXXX Frequency Band

T01-0110X-XX

T01-0110X-XXX

T01-0110X-XXXX

a. Receive-only base stations are currently available for operation only on B3 band.

b. The actual frequency coverage in this band is:

Product Code Description

T01-01121-X

-XXXX 3 = reciter
4 = receive-only

D = 148MHz to 174MHz
K = 400MHz to 440MHz
L = 440MHz to 480MHz
N = 762MHz to 870MHz

XX A = standard

X A = default

A = default

Transmit: 762MHz to 776MHz and 850MHz to 870MHz
Receive: 792MHz to 824MHz

XXX Frequency Band

D = 148MHz to 174MHz
K = 400MHz to 440MHz
L = 440MHz to 480MHz
N = 762MHz to 870MHz

a

b

a

Tait Band Identifier

B3 band
H1 band
H2 band
K4 band

Tait Band Identifier

B3 band
H1 band
H2 band
K4 band

T01-01121-XX

T01-01121-XXX

T01-01121-XXXX

a. The actual frequency coverage in this band when used with a K-band TB9400 re-

citer is 762MHz to 776MHz and 850MHZ to 870MHz.

TB9400 Installation and Operation Manual Installation 73
© Tait Limited April 2014

XX A = 50W

B = 100W

X A = default

A = default

PMU Product
Codes

Product Code Description

TBAX

XXX-XXXX 3 = PMU

TBA3X

XX-XXXX 0 = default

TBA3XX

TBA3XXX

TBA3XXX-X

TBA3XXX-XX

X-XXXX 0 = AC module not fitted

-XXXX 0 = DC module not fitted

XXX 0 = standby power supply card not fitted

XX 0 = auxiliary power supply board not fitted

TBA3XXX-XXX

TBA3XXX-XXXX

A = AC module fitted

1 = 12V DC module fitted
2 = 24V DC module fitted
4 = 48V DC module fitted

1 = 12VDC standby power supply card fitted
2 = 24VDC standby power supply card fitted
4 = 48VDC standby power supply card fitted

1 = 12VDC auxiliary power supply board fitted
2 = 24VDC auxiliary power supply board fitted
4 = 48VDC auxiliary power supply board fitted

X 0 = default

0 = default

74 Installation TB9400 Installation and Operation Manual

© Tait Limited April 2014

5.4 Initial Setting Up

Before putting the base station into service, you may want to carry out
some basic functional testing, configuration, and tuning (if required). This
section provides an overview of these procedures:

■ checking that the base station powers up correctly

■ checking the basic functionality of the base station by using the tests

available in the web interface

■ customizing the configuration for the intended installation and

verifying that the configuration is correct

■ changing the root password

■ tuning the base station (if required).

5.4.1 Confirming Operation

Notice Make sure that the RF output is connected to a suitable atten-

uator or dummy load. Do not remove the load while the PA is transmit­ting as this may damage the PA output stage.

Applying Power 1. Apply power by turning on the PMU.

2. Check that the base station powers up correctly:

■ The front panel display will show “Please wait...” while the base

station starts up (this may take up to two minutes). When the
startup process is complete, the display will show the home
screen.

■ The cooling fans in the front panel will run at full speed for a few

seconds, then run at low speed while the base station starts up,
and then assume standard operation. One or more fans may
operate, depending on the temperature of the modules.

TB9400 Installation and Operation Manual Installation 75
© Tait Limited April 2014