AEQ RANGER User manual

A.E.Q., S.A., manufacturer of this equipment, is a “Registered Company” by
AENOR with reg. no. ER-080/1/96, in accordance with UNE standard EN-ISO-9001
RANGER
Data and Audio Channel Multiplexer with
E1/T1 Access
USER’S MANUAL
ED. 02/02

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
2
INDEX
1GENERAL REMARKS.................................................................................................................... 3
1.1 General precautions....................................................................................................... 3
1.1.1 Read all the instructions................................................................................ 3
1.1.2 Connections to power supply and ground................................................... 3
1.1.3 Protection against voltage fluctuations........................................................ 3
1.1.4 Protection from water and humidity.............................................................. 3
1.1.5 Ventilation, fire and flammable vapors......................................................... 3
1.1.6 Maintenance................................................................................................... 3
2DESCRIPTION OF THE EQUIPMENT............................................................................................. 4
2.1 General description of the equipment........................................................................... 4
2.2 Brief description of the modules.................................................................................... 4
3DESCRIPTION OF THE MODULES................................................................................................ 5
3.1 Modular rack................................................................................................................... 5
3.2 Power supply module..................................................................................................... 6
3.2.1 Front panel..................................................................................................... 6
3.2.2 Rear panel...................................................................................................... 6
3.3 Control module............................................................................................................... 7
3.3.1 Front panel..................................................................................................... 7
3.3.2 Rear panel.....................................................................................................12
3.3.3 Equipment interconnection..........................................................................13
3.3.4 Jumper configuration...................................................................................14
3.4 Audio I/O module with eight 4B/8C circuits..................................................................16
3.4.1 Front Panel....................................................................................................16
3.4.2 Rear panel.....................................................................................................18
3.5 Audio I/O module with four 4B/4C circuits...................................................................19
3.5.1 Front panel....................................................................................................19
3.5.2 Rear panel.....................................................................................................21
3.6 Data module...................................................................................................................22
3.6.1 Front panel....................................................................................................23
3.6.2 Rear panel.....................................................................................................25
3.6.3 Pin-out of the V35 interface connectors......................................................26
4TECHNICAL SPECIFICATIONS ....................................................................................................27
5SOFTWARE...................................................................................................................................29
5.1 Introduction....................................................................................................................29
5.2 Minimum installation requirements..............................................................................29
5.3 RANGER Engineering Planning....................................................................................30
5.4 RANGER Realtime Control............................................................................................36
5.5 RANGER Firmware Upgrade.........................................................................................46

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
3
1GENERAL REMARKS
1.1 General precautions
The security measures and precautions described below must be observed in all phases of operation and
maintenance of this unit. Failing to respect the indications that are emphasized in this section may alter
the operation and features of the RANGER as the result of improper use of the equipment.
1.1.1 Read all the instructions
It is absolutely essential to read carefully all the instructions set forth in this manual, and to read them in
the established order, before connecting the equipment to the mains power supply and starting it up.
In this way, you will get the best possible performance out of the multiplexer from the outset and, at the
same time, you will be able to avoid incorrect or improper operations that could damage it.
1.1.2 Connections to power supply and ground
To reduce the risk of electric shocks, the power supply or supplies that feed this unit must be grounded.
The RANGER is supplied with a lateral ground connection plug. If this plug should ever need to be
replaced, it should be borne in mind that the ground wire has green and yellow color coding on its
insulation.
1.1.3 Protection against voltage fluctuations
In geographic areas where voltage fluctuations in electric lines are frequent, it will be necessary to add
external protection to the multiplexer to ensure that the voltage it receives is the same voltage specified in
this manual.
1.1.4 Protection from water and humidity
We recommend against using the RANGER in areas where it may be subjected to splashing, rain, etc., or
in places with damp floors. Its use should also be avoided in places having a high degree of atmospheric
humidity, which frequently condenses on equipment.
1.1.5 Ventilation, fire and flammable vapors
The multiplexer must never be placed near or on a heat source. The use of electric or electronic
equipment near fire or in an atmosphere that is permeated with flammable vapors is highly dangerous,
and must be avoided at all costs.
All the ventilation grilles must be kept uncovered to ensure proper air circulation and to allow hot air to be
exhausted from the equipment.
1.1.6 Maintenance
Only qualified service technicians should be allowed to perform maintenance operations on the RANGER.
AEQ, S.A. is not responsible for any damage caused to the multiplexer by unauthorized maintenance
operations on the equipment, nor for any damages that a RANGER subjected to unauthorized repair may
cause to other equipment items or persons.
Always bear in mind that there are very high voltages inside the power supply. They can cause severe
electric shocks. Therefore, proceed with the greatest caution when handling this unit.

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
4
2DESCRIPTION OF THE EQUIPMENT
2.1 General description of the equipment
The RANGER is a coded data and audio channel multiplexer with E1 (2,048 Mbps) and T1 (1,544 Mbps)
access.
It enables its users to work with codified audio quality levels of 3.5 kHz, 7.5 KHz, and 15 kHz bandwidth,
and with data channels of 256 Kbps, 128 Kbps and 64 Kbps bandwidth. When connected to an E1 type
access (32 64-Kbps slots), it can use 31 64-Kbps slots for audio and transmission and the remaining 64-
Kbps channel for synchronization, and when connected to a T1 access, it can use 24 64-Kbits slots.
The RANGER is built on a standardized 19-inch, 6 units rack with a depth of 360 mm, and offers space
for eight data an daudio I/O modules, one control module and two power supply modules.
2.2 Brief description of the modules
The power supply module is of the switched type. It accepts input voltages in a range of 85-132/170-264
V AC 50/60 Hz, and puts out 48 V DC with a maximum power of 150W.
The control module is where the digital E1 or T1 access connection is made through a twisted pair (a
future option will allow optical fiber to be used), and where the cited accesses are managed. The
multiplexer allows remote control and monitoring functions that include supervision of alarms and of the
status of the modules, as well as the updating of firmware from a remote PC. To make these control
functions possible, this board has a control bus that implements EIA recommendation RS-232, and a RS-
422 control bus which enables it to be connected to multipoint networks.
The audio I/O module can be of two types, offering up to four 4B/4C audio circuits and a maximum of
eight 4B/8C audio circuits. Each audio I/O module processes four 64-Kbps slots (256 Kbps). As many as
eight I/O modules of any type can be inserted in a RANGER rack.
The 4B/4C type audio module offers three configuration options, depending on the number of audio
circuits and their quality:
1) Two 15 kHz audio circuits.
2) Four 7.5 kHz audio circuits.
3) Two 7.5 kHz audio circuits + one 15 kHz audio circuit.
The 4B/8C type audio module offers three configuration possibilities, according to the number of audio
circuits and their quality:
1) Four 7.5 kHz audio circuits.
2) Four 3.5 kHz audio circuits + two 7.5 kHz audio circuits.
3) Eight 3.5 kHz audio circuits.
The data module offers four different configurations:
1) One 256 Kbps data circuit.
2) Two 128 Kbps data circuits.
3) One 128 Kbps data circuit + two 64 Kbps data circuits.
4) Four 64 Kbps data circuits.
Up to six data modules in T1 access mode, and up to seven data modules in E1 mode can be inserted in
a RANGER rack.

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
5
3DESCRIPTION OF THE MODULES
3.1 Modular rack
©
©
Standardized 19-inch rack, 6 units high and 360 mm deep, of metal construction and providing space for
eight data and audio I/O modules, one control module and two power supply modules. The ventilation of
the electronic components is ensured by ventilation slots at the top and bottom of the rack, and by the
power supply ventilation fans.
+
+
-+-+-+-+-+-+-+-+-+-+-+-+

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
6
3.2 Power supply module
3.2.1 Front panel
©
This module features a DC ON indicator that lights up when the equipment is powered up and the back
panel switch is in the ON position.
3.2.2 Rear panel
From top to bottom, the following elements can be distinguished on the power supply module back panel:
•Off / on switch labeled “ON”
•DC ON indicator that lights when the indicator is powered up and the switch is in the ON position.
•Fuse block with 6-Ampere fuses
•IEC type connector for connecting the cable to the mains
•Also found on the back panel is the hot air outlet grille associated with the power supply fan.

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
7
3.3 Control module
3.3.1 Front panel
The following elements can be distinguished from top to bottom:
•Two RX/TX communications LEDs that indicate when the
remote control PC is in communication with the control board to
carry out remote control, monitoring or software updating
processes.
•A DIP switch block containing eight microswitches: this is
used to convert the RANGER rack identification into binary code
(see the coding table at the end of this chapter).
•A numeric “ADDRESS” indicator with three seven-segment
displays which indicate the identification programmed by means
of the DIP switches, that is, the address of the node that a control
module occupies in the multipoint control network.
•A group of four operational mode LEDs that indicate the
following:
-MASTER.When this LED is lighted, it means that the rack is
programmed as a master device; when it is off, the rack is
programmed as a slave. (In master mode, the equipment
generates the synchronization clock.)
-E1.When this LED is lighted, it means that you have
selected the E1 type access.
-T1.When this LED is lighted, it means that you have
selected the T1 type access.
-TEST LOOP.This operational mode can only be used when
the equipment is in MASTER mode; it sets up an internal E1/T1
frame loop and, simultaneously, an external loop involving the E1
or T1 balanced communication lines, with the aim of creating
remote external loops.
•A “MODE” DIP switch block containing four microswitches
with the following functions:
-Nr. 1:When this microswitch is in the “ON” position, the
RANGER will operate with an E1 (2,048 Mbps) access. When the
switch is in the “OFF” position, the multiplexer will operate with a
T1 (1,544 Mbps) type access.
-Nr. 2:With this second microswitch in the “ON” position, the
equipment will act as the “MASTER” device and thus will
generate the synchronization clock; when it is “OFF” the
multiplexer will operate as a slave, thus receiving the
synchronization clock sent to it by the MASTER. (There must
always be one equipment item operating as the master and the
other as its slave).
-Nr. 3: When this microswitch is “ON,” the equipment will go
into the “TEST LOOP” mode. When the switch is “OFF,” the
multiplexer will not execute this function.
-Nr. 4: With this microswitch “ON,” the E1/T1 access input is
selected by the optical fiber TX/RX connectors (an option that will
be available in the future). When it is “OFF,” the E1/T1 access
input is selected by the twisted pair connector (an RJ-45
connector)..

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
8
•Group of nine alarm LEDs that indicate the following:
-LINE FAILURE.Line failure alarm.
The G703 output driver is protected against power surges in order to prevent damage to the output
transformer. If a high level is not detected during 192 transmission clock cycles, an alarm is generated
that persists until a high level appears in the line.
If the line failure LED lights up when no other equipment item is connected to its end, it means that there
is a short circuit in the transmission line. When it is confronted with another equipment item and this LED
is lighted, it means that the driver is limiting the current that it generates through the line and that,
therefore, STRAPS L0, L1 and L2 need to be configured. When these straps are in their peak position
they are configured to generate the maximum current and thus to reach the greatest length.
-CARRIER LOSS. Absence of carrier.
This LED comes on after 32 consecutive zeros in reception, and returns to its normal status with the next
“1” received.
-SINC.LOSS. Lack of synchronization.
Indicates that the transceiver cannot synchronize with the incoming frames.
-FRAME ERROR. Frame alarm.
This alarm is generated when an erroneous code is received in the frame alignment.
-M.FRAME ALARM. Multiframe alarm.
This LED is lighted when a loss of the multiframe alignment is detected.
-REMOTE ALARM.
Generated when the remote alarm bit is activated.
-SERVICE ALARM.
This alarm is generated when the RANGER is out of service. The presence of the alarm implies that there
is no communication with the other node. It can be generated either by loss of synchronization, loss of
carrier or by a frame alignment error. When this alarm is generated, the maintenance alarm will always be
generated simultaneously so that an immediate check of the system will be made.
-MAIN. ALARM. Maintenance alarm.
This alarm is generated whenever a service alarm exists, or when a remote or multiframe alarm is
received. It tells you that the communication is satisfactory and that the problem is being generated at the
other end of the network, which means that the other end needs to be checked or serviced.
-AUDIO FAILURE. Audio board failure alarm.
This alarm LED is activated when one of the audio boards connected to the system is operating
incorrectly or not at all.

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
9
ADDRESS
SW-1SW-2SW-3SW-4SW-5SW-6SW-7SW-8
000000000
100000001
200000010
300000011
400000100
500000101
600000110
700000111
800001000
900001001
10 00001010
11 00001011
12 00001100
13 00001101
14 00001110
15 00001111
16 00010000
17 00010001
18 00010010
19 00010011
20 00010100
21 00010101
22 00010110
23 00010111
24 00011000
25 00011001
26 00011010
27 00011011
28 00011100
29 00011101
30 00011110
31 00011111
32 00100000
33 00100001
34 00100010
35 00100011
36 00100100
37 00100101
38 00100110
39 00100111
40 00101000
41 00101001
42 00101010
43 00101011
44 00101100
45 00101101
46 00101110
47 00101111
48 00110000
49 00110001
50 00110010
51 00110011
52 00110100
53 00110101
54 00110110
55 00110111
56 00111000
57 00111001
58 00111010
59 00111011

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
10
ADDRESS
SW-1SW-2SW-3SW-4SW-5SW-6SW-7SW-8
60 00111100
61 00111101
62 00111110
63 00111111
64 01000000
65 01000001
66 01000010
67 01000011
68 01000100
69 01000101
70 01000110
71 01000111
72 01001000
73 01001001
74 01001010
75 01001011
76 01001100
77 01001101
78 01001110
79 01001111
80 01010000
81 01010001
82 01010010
83 01010011
84 01010100
85 01010101
86 01010110
87 01010111
88 01011000
89 01011001
90 01011010
91 01011011
92 01011100
93 01011101
94 01011110
95 01011111
96 01100000
97 01100001
98 01100010
99 01100011
100 01100100
101 01100101
102 01100110
103 01100111
104 01101000
105 01101001
106 01101010
107 01101011
108 01101100
109 01101101
110 01101110
111 01101111
112 01110000
113 01110001
114 01110010
115 01110011
116 01110100
117 01110101
118 01110110
119 01110111

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
11
ADDRESS
SW-1SW-2SW-3SW-4SW-5SW-6SW-7SW-8
120 01111000
121 01111001
122 01111010
123 01111011
124 01111100
125 01111101
126 01111110
127 01111111

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
12
3.3.2 Rear panel
+
+
You will find the following elements on the back panel:
”ALARMS” section:
An 11-contact Hartmann type pin header connector for external
alarm synchronization. This involves outputs through relays that
are closed when any of the alarms described in the previous
point are detected, plus the “POW.SUPPLY” output, which is
activated when there is a failure in one of the power supplies.
The outputs allow a maximum voltage of 50 V and a maximum
current of 500 mA.
“RS-422 CONTROL PORT” section:
A four pole Hartmann type pin header connector for the Tx and
Rx (“+” y “–“)connection of the RS-422 external multipoint line
for interconnection with other RANGER racks. When two or
more RANGER racks are connected to an RS-422 bus, the
polarity between the connectors must be respected.
”E1/T1 INTERFACE” section:
An RJ-45 connector for connecting the balanced TX and RX
data access pairs. The physical support is twisted pair cable and
the guaranteed maximum range is 300 m. The pin assignments
are as follows:
-Pair nr. 1 = RX+ pin 1 and RX-pin 2.
-Pair nr. 2 = TX+ pin 7 and TX-pin 8.
“RS-232 CONTROL PORT” section:
A nine contact DB 9 socket (female) connector for connection of
acontrol PC. The cable should have the following pin-out:
SIGNAL
RANGER PC
DB 9 male DB 9 female
TX 22
RX 33
GND 55
RTS 77

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
13
3.3.3 Equipment interconnection
When several RANGERs are going to be interconnected, it should be done through the RS-422 interface,
pin to pin,respecting the polarity between the connectors of all racks. The control PC is connected to a
single RANGER rack,linking the PC’sserial port COM1 with the RANGER’sRS-232 interface.
+
+
+
+
-+-+-+-+
+
+
-+-+
PC
COM1
RS-232
RANGER 1 RANGER 2 RANGER N
RS-422 RS-422 RS-422
RS-232
CONTROL

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
14
3.3.4 Jumper configuration
The controller board features twelve programming jumpers. Their function in both access types (E1 and
T1) is the following:
•PT1: Board ground reference selection.
E1 T1
GND
Board ground isolated from
equipment chassis Board ground isolated from equipment chassis
CHASSIS
Board ground connected to
equipment chassis Board ground connected to equipment chassis
•PT2: Determines the communication port speed (future feature).
E1 T1
NO DOT
19,200 baud 19,200 baud
DOT
38,400 baud 38,400 baud
•PT3: Line code selection in T1 mode.
E1 T1
NO DOT
Not defined (HDB3) B8ZS
DOT
Not defined (HDB3) AMI
•PT4: Activation / deactivation of CRC4 multiframe in E1 mode.
E1 T1
NO DOT
CRC4 multiframe activated Not defined
DOT
CRC4 multiframe deactivated
Not defined
•PT5: Framing selection in T1 mode.
E1 T1
NO DOT
Not defined 193S (12 frames/multiframe)
DOT
Not defined 193E (24 frames/multiframe)

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
15
•PT6: RESET generation. This jumper is used only for debugging of the board, therefore in normal
operation it has to be always in NO DOT position.
E1 T1
NO DOT
Normal operation Normal operation
PUNTO
Forbidden configuration Forbidden configuration
•PT7: Line code selection at driver level.Since the line code selection should be done at
transceiver level with PT3, this jumper should always be configured in NO DOT position
(transparent).
E1 T1
NO DOT
Normal operation Normal operation
DOT
Forbidden configuration Forbidden configuration
•PT8/PT9/PT10: Selection of output pulse waveform at the transmitter for T1 mode. It is
recommended to set the three jumpers in DOT position for getting the maximum length.
PT8 PT9 PT10 E1 T1
NO DOT NO DOT NO DOT Not defined Test mode (do not use)
DOT NO DOT NO DOT Not defined -7,5 dB T1 CSU
NO DOT DOT NO DOT Not defined -15 dB T1 CSU
DOT DOT NO DOT Not defined 0 dB, 0-44 m T1 CSU, DSX-1
NO DOT NO DOT DOT Not defined 44-88 m T1 DSX-1
DOT NO DOT DOT Not defined 88-132 m T1 DSX-1
NO DOT DOT DOT Not defined 132-176 m T1 DSX-1
DOT DOT DOT Not defined 176-216 m T1 DSX-1
•PT11/PT12: Selection of reception line impedance for E1 and T1.
PT11 PT12 E1 T1
120 120
120 Ω(twisted pair) Forbidden configuration
100 120
Forbidden configuration Forbidden configuration
120 100
Forbidden configuration Forbidden configuration
100 100
Forbidden configuration 100 Ω

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
16
3.4 Audio I/O module with eight 4B/8C circuits
3.4.1 Front Panel
From top to bottom, the following elements can be found on the front panel of this module:
•Two RX/TX communication LEDs that indicate when the
remote control PC is communicating with the audio board to
execute remote control, monitoring or software updating
processes.
•A block of DIP switches containing eight microswitches.
This is used to configure the operating mode of the module. The
configurations that can be set up are the following:
-Nr. 1 (LOC/REM): When this microswitch is in the “ON”
position, the module is in “REMOTE” mode and you can only
configure “AUDIO MODE” microswitches 3, 4, 5 and 6 from the
remote controlling PC. When the switch is in the “OFF” position,
the module functions in “LOCAL” mode, and configuration is
done directly from microswitches 3, 4, 5 and 6.
The equipment includes a FLASH-EPROM non-volatile memory
system to store the configuration parameters so that, in
REMOTE mode and after power-up, the equipment starts up in
accordance with the last audio configuration selected.
-Nr. 2 (TEST LOOP): With this microswitch in the “ON”
position, the module makes a local loop at the 256-Kbps frame
level of the audio circuits it manages. Changing this switch to the
“OFF” position will disable this function.
-Nr. 3 (TONE): When microswitch number 3 is “ON,” the
module generates a 1 kHz test tone in all the outputs of the
active audio circuits. By using the relevant adjustment trimmer,
you will be able to vary the output level from -10 dBU to +10
dBU. When any of microswitches 4, 5 or 6 is “ON,” the tone will
only come out through the active audio circuits. If no audio
configuration is active, the tone will come out through all the
outputs; the same will occur if you select an incorrect audio
configuration (for example, microswitches 4 and 5 “ON”) or any
other combination. When microswitch Nr. 3 is “OFF,” this
function will be disabled.
-Nr. 4: With this microswitch in the “ON” position (and 5 and
6 are “OFF”), the module enables audio configuration 1 (4 x 7.5
kHz). In the “OFF” position, this switch has no function.
-Nr. 5: When this microswitch is “ON,” (and 3 and 6 are
“OFF”), the module enables audio configuration 2 (4 x 3.5 kHz +
2 x 7.5 kHz). In the “OFF” position, this switch has no function.
-Nr. 6: With this microswitch in the “ON” position (4 and 5
“OFF”), the module enables audio configuration 3 (8 x 3.5 kHz).
In the “OFF” position, this switch has no function.
-Nr. 7: Reserved for future configurations.
-Nr. 8: Reserved for future configurations.

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
17
•A group of three operating mode LEDs that indicate the following:
-LOC/REM.The lighting of this LED indicates that the module is configured in “REMOTE” mode
(microswitch Nr. 1 ON). When the LED is off, the module is configured in “LOCAL” mode (microswitch Nr.
1 OFF).
-TEST LOOP. When this LED is lighted it indicates that the TEST LOOP mode has been selected for
this module (microswitch Nr. 2 ON). When it is off, the module does not have this function enabled
(microswitch Nr. 2 is OFF).
-TONE.When this LED is lighted it indicates that the TONE mode (microswitch Nr. 3 ON) has been
selected for the module. When the LED is off, the module does not have this function enabled
(microswitch Nr. 3 is OFF).
•A group of four “AUDIO MODE” operating mode LEDs that announce the following:
-4 x 7,5. The lighting of this LED tells you that audio mode 1 (four 7.5 kHz channels) has been
selected for the module and that, therefore, microswitch Nr. 4 is ON and 3 and 6 are OFF. When the LED
is off, the module does not have this function enabled (microswitch Nr. 4 is OFF, or another selection
involving 5 or 6 has been made).
-4 x 3,5 + 2 x 7,5. When this LED is lighted it indicates that audio mode 2 (four 3.5 kHz channels plus
two 7.5 kHz channels) has been selected for the module; microswitch Nr. 5 is therefore ON and 4 and 6
are OFF. When the LED is off, the module does not have this function enabled (microswitch Nr. 5 is OFF,
or another selection involving switch 4 or 6 has been made).
-8 x 3,5. The lighting of this LED tells you that audio mode 3 (eight 3.5 kHz channels) has been
selected for the module, and thus that microswitch Nr. 6 is ON and 4 and 5 are OFF). When the LED is
off, the module does not have this function enabled (microswitch Nr. 6 is OFF, or another selection
involving microswitch 4 or 5 has been made).
-OTHER. Reserved for future applications. When this LED flashes, it is indicating that an alarm is
being detected on the audio board.
•A group of sixteen “OUT”/”IN” LEDs that indicate that “AUDIO INDICATOR” exists and signal the
availability of the circuit, according to the configuration. These LEDs are of the two-colored type and they
reflect the following states:
-Off / Green: Indicates the presence of an audio signal. When the LED is green, the audio level is
above the presence threshold; when it is extinguished, the audio is below that threshold.
-Red: When this LED is steadily lighted in red, it indicates that the circuit is not available due to the
configuration that has been selected. When it flashes red, there is a communication error.
•A group of sixteen “OUT”/”IN” trimmers for the adjustment of the parameters indicated below:
-OUT. Adjust the output audio level for each circuit.
-IN. Adjust the input audio level for each circuit.

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
18
3.4.2 Rear panel
-+-+
The “IN/OUT” connectors associated with the inputs and outputs
of the eight audio circuits are found on the back panel of this
module.
Each audio circuit has a four-contact Hartmann type pin header
connector. The four contacts are divided into two “+/-“ contacts
for input and two “+/-“ contacts for the output.
All the inputs and outputs are balanced by transformer.

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
19
3.5 Audio I/O module with four 4B/4C circuits
3.5.1 Front panel
Looking at the module from top to bottom, the following elements
can be found:
•Two RX/TX communication LEDs that indicate when the
remote control PC is in communication with the control board to
carry out remote control, monitoring or software updating
processes.
•A block of DIP switches containing eight microswitches.
This is used to configure the operating mode of the module. The
configurations that can be set up are the following:
-Nr. 1 (LOC/REM): When this microswitch is in the “ON”
position, the module is in “REMOTE” mode and you can only
configure “AUDIO MODE” microswitches 3, 4, 5 and 6 from the
remote controlling PC. When the microswitch is in the “OFF”
position, the module functions in “LOCAL” mode, and
configuration is done directly from microswitches 4, 5 and 6.
The equipment includes a FLASH-EPROM non-volatile memory
system to store the configuration parameters so that, in
REMOTE mode and after power-up, the equipment starts up in
accordance with the last audio configuration selected.
-Nr. 2 (TEST LOOP): With this microswitch in the “ON”
position, the module makes a local loop at the 256 Kbps frame
level of the audio circuits it manages. Changing this switch to the
“OFF” position will disable this function.
-Nr. 3 (TONE): When microswitch number 3 is “ON,” the
module generates a 1 kHz test tone in all the outputs of the
active audio circuits. By using the relevant adjustment trimmer,
you will be able to vary the output level from -10 dBU to +10
dBU. When any of microswitches 4, 5 or 6 is “ON,” the tone will
only come out through the active audio circuits. If no audio
configuration is active, the tone will come out through all the
outputs; the same will occur if you select an incorrect audio
configuration (for example, microswitches 4 and 5 “ON”) or any
other combination. When microswitch Nr. 3 is “OFF,” this
function will be disabled.
-Nr. 4: With this microswitch in the “ON” position (and 5 and
6 are “OFF”), the module enables audio configuration 1 (2 x 15
kHz). In the “OFF” position, this switch has no function.
-Nr. 5: When this microswitch is “ON,” (and 3 and 6 are
“OFF”), the module enables audio configuration 2 (2 x 7.5 kHz +
1 x 15 kHz). In the “OFF” position, this switch has no function.
-Nr. 6: With this microswitch in the “ON” position (4 and 5
“OFF”), the module enables audio configuration 3 (4 x 7.5 kHz).
In the “OFF” position, this switch has no function.
-Nr. 7: Reserved for future configurations.
-Nr. 8: Reserved for future configurations.

RANGER
Data and Audio Channel Multiplexer with E1/T1 Access
20
•A group of three operating mode LEDs that indicate:
-LOC/REM. The lighting of this LED indicates that the module is configured in “REMOTE” mode
(microswitch Nr. 1 ON). When the LED is off, the module is configured in “LOCAL” mode (microswitch Nr.
1 OFF).
-TEST LOOP. When this LED is lighted it indicates that the TEST LOOP mode has been selected for
this module (microswitch Nr. 2 ON). When it is off, the module does not have this function enabled
(microswitch Nr. 2 is OFF).
-TONE. When this LED is lighted it indicates that the TONE mode (microswitch Nr. 3 ON) has been
selected for the module. When the LED is off, the module does not have this function enabled
(microswitch Nr. 3 OFF).
•A group of four “AUDIO MODE” operating mode LEDs that indicate:
-2 x 15. The lighting of this LED tells you that audio mode 1 (two 15 kHz channels) has been selected
for the module and that, therefore, microswitch Nr. 4 is ON and 5 and 6 are OFF. When the LED is off,
the module does not have this function enabled (microswitch Nr. 4 is OFF, or another selection involving
5 or 6 has been made).
-2 x 7,5 + 1 x 15. When this LED is lighted it indicates that audio mode 2 (two 7.5 kHz channels plus
one 15 kHz channel) has been selected for the module; microswitch Nr. 5 is therefore ON and 4 and 6
are OFF. When the LED is off, the module does not have this function enabled (microswitch Nr. 5 is OFF,
or another selection involving switch 4 or 6 has been made).
-4 x 7,5. The lighting of this LED tells you that audio mode 3 (four 7.5 kHz channels) has been
selected for the module, and thus that microswitch Nr. 6 is ON and 4 and 5 are OFF). When the LED is
off, the module does not have this function enabled (microswitch Nr. 6 is OFF, or another selection
involving microswitch 4 or 5 has been made).
-OTHER. Reserved for future applications. When this LED flashes, it is indicating that an alarm is
being detected on the audio board.
•A group of four “OUT”/”IN” LEDs that indicate that “AUDIO INDICATOR” exists and signal the
availability of the circuit, according to the configuration. These LEDs are of the two-colored type and they
reflect the following states:
-Off / Green: Indicates the presence of an audio signal. When the LED is green, the audio level is
above the presence threshold; when it is extinguished, the audio is below that threshold.
-Red: When this LED is steadily lighted in red, it indicates that the circuit is not available due to the
configuration that has been selected. When it flashes red, there is a communications error.
•A group of eight “OUT”/”IN” trimmers for the adjustment of the parameters indicated below:
-OUT. Adjust the output audio level for each circuit.
-IN. Adjust the input audio level for each circuit.