ETU-01(U) User Manual
ETU01
ETU01U
Single Modular Data Port
G.703 E1 Access Unit
CTC Union Technologies Co., Ltd.
Far Eastern Vienna Technology Center
8F, No. 60 Zhouzi Street
Neihu District, Taipei, 114
Taiwan
ETU01 (ETU01U) E1 Access Unit, User Manual
Version 3.0 September 14, 2009 (Official Release)
This manual supports the following models*:
ETU01-AC universal AC model, ETU/TTU Modular I/F
ETU01-DC universal (18~75V) DC model, ETU/TTU Modular I/F
ETU01U-AC unframed E1, universal AC model, ETU/TTU Modular I/F
ETU01U-DC unframed E1, universal (18~75V) DC model, ETU/TTU Modular I/F
* For Version 3 models (45x195x155mm HxWxD) with version 1.2 PCB
For legacy models, please download the old manual from CTC Union's website or contact
our customer service.
Table of Contents
CHAPTER 1 INTRODUCTION.............................................................................7
1.0 WELCOME ..........................................................................................................7
1.1 PRODUCT DESCRIPTION .....................................................................................7
1.2 TECHNICAL SPECIFICATIONS ..............................................................................7
1.3 E1 SIGNAL STRUCTURE.....................................................................................10
1.4 ETU01 CAPABILITIES ......................................................................................11
1.5 SYSTEM TIMING CONSIDERATIONS ..................................................................11
1.6 FUNCTIONAL DESCRIPTION ..............................................................................14
1.7 LOOPBACK FEATURE........................................................................................15
1.8 TYPICAL SYSTEM APPLICATIONS .....................................................................15
CHAPTER 2. INSTALLATION ...........................................................................17
2.1 GENERAL .........................................................................................................17
2.2 SITE PREPARATION ..........................................................................................17
2.3 MECHANICAL ASSEMBLY.................................................................................17
2.4 ELECTRICAL INSTALLATION .............................................................................17
2.4.1 Power connection .....................................................................................17
2.4.2 Rear panel connectors..............................................................................17
2.5 DIP SWITCHES .................................................................................................18
2.5.1 Caution .....................................................................................................18
2.5.2 Procedure .................................................................................................18
CHAPTER 3. OPERATION .................................................................................21
3.1 GENERAL .........................................................................................................21
3.2 CONTROLS AND INDICATORS............................................................................21
3.3 OPERATING PROCEDURE ..................................................................................23
3.3.1 Visual Indicators ......................................................................................23
3.3.2 Configuration Settings..............................................................................23
3.4 QUICK START GUIDE........................................................................................24
CHAPTER 4. TEST & DIAGNOSTICS ..............................................................25
4.1 GENERAL .........................................................................................................25
4.2 LOOP BACK TESTS ...........................................................................................25
4.3 BIT ERROR RATE TESTER .................................................................................25
4.4 LOCAL ANALOG LOOP BACK ...........................................................................26
4.5 LOCAL DIGITAL LOOP BACK ............................................................................26
4.6 REMOTE DIGITAL LOOP BACK .........................................................................27
4.7 QUICK E1 SELF-TEST .......................................................................................27
i
Table of Contents
APPENDIX..............................................................................................................29
A.1 ETU01 ALL DIP SWITCH OVERVIEW ..............................................................29
A.2 DIP SW1 TIME SLOT 0 TO 7 SETTING .............................................................29
A.3 DIP SW2 TIME SLOT 8 TO 15 SETTING ...........................................................30
A.4 DIP SW3 TIME SLOT 16 TO 23 SETTING .........................................................31
A.5 DIP SW4 TIME SLOT 24 TO 31 SETTING .........................................................32
A.6 DIP SW5 PARAMETER GROUP 1 SETTING .......................................................33
A.7 DIP SW6 PARAMETER GROUP 2 SETTING .......................................................34
A.8 CLOCK MODE DETAILS ...................................................................................35
B.1 ETU01U ALL DIP SWITCH OVERVIEW ...........................................................36
B.2 DIP SW5 PARAMETER GROUP 1 SETTING .......................................................36
B.3 DIP SW6 PARAMETER GROUP 2 SETTING .......................................................37
B.5 CLOCK MODE DETAILS ....................................................................................38
C.1 E1 LINE CONNECTORS .....................................................................................39
C.1.1 BNC Connectors ......................................................................................39
C.1.2 RJ-45 Connector ......................................................................................39
C.2 X.21 DATA MODULE CONNECTOR ..................................................................39
C.3 RS-232 DATA MODULE CONNECTOR .............................................................40
C.4 V.35 DATA MODULE CONNECTOR ..................................................................41
C.5 RS-530 DATA MODULE CONNECTOR .............................................................42
C.6 RS-530 TO RS-449 ADAPTER CABLE..............................................................43
C.7 G.703/64K CODIRECTIONAL CONNECTOR ......................................................44
C.8 G.703 NRZ.....................................................................................................45
C.9 ET100 10/100BASE-TX ETHERNET BRIDGE .................................................46
C.10 ET100R 10/100BASE-TX ETHERNET ROUTER ............................................47
1. ETU/TTU-V35 ..................................................................................................48
2. ETU/TTU-530 ...................................................................................................48
3. ETU/TTU-449 ...................................................................................................48
4. ETU/TTU-X21 ..................................................................................................49
5. ETU/TTU-232 ...................................................................................................49
6. ETU/TTU-G64 ..................................................................................................49
7. ETU/TTU-NRZ .................................................................................................50
8. ETU/TTU-ET10/100 .........................................................................................50
9. ETU/TTU-ET100R ...........................................................................................50
ii
Chapter 1. Introduction
Chapter 1 Introduction
1.0 Welcome
Thank you for selecting the ETU01 for your E1 service termination. We hope you
find this device in perfect working order and that it provides many years of reliable
service.
1.1 Product Description
The ETU01 is a single modular port access unit for E1 or Fractional E1 service.
The ETU01U is a single modular serial port access unit for Unframed E1 only. The
ETU01 AC model has a universal, auto-switching power supply (90~250VAC) while
the DC model's internal regulator module accepts DC voltages from 18 to 75 volts.
A number of user replaceable data modules are available in the ETU/TTU series
for use in the single port ETU01, including serial modules for RS-232, V.35, RS530/449, X.21 as well as Ethernet bridge and router modules. Additionally, legacy
modules are available for hard to find interfaces such as G.703 64K Codirectional
and NRZ. Please refer to the appendix for complete descriptions of the available
interface options.
1.2 Technical Specifications
E1 link
Framing
Bit Rate
Line Code
Line Impedance
Relative Receive Level
"Pulse" Amplitude
"Zero" Amplitude
Transmit Frequency Tracking
Internal Timing
Loopback Timing
External Timing
Jitter Performance
Complies With
Interface Connectors
-Unframed (ETU01U only Unframed)
-CCS (PCM31)/CAS (PCM30)
-CRC4 ON/OFF
2.048 Mbps
-AMI
-HDB3
-75 ohms
-120 ohms
0 to -43dB
-Nominal 2.37V±10% for 75 ohms
-Nominal 3.00V±10% for 120 ohms
±0.1V
±30 ppm
±50 ppm
±100 ppm
According to ITU-T G.823
ITU-T G.703, G.704, G.706 and G.732
-BNC (unbalanced)
-RJ-45 (balanced) per USOC RJ-48C
7
Chapter 1. Introduction
User Data Channel
Modular Interfaces
Interface Connectors
V.35 Interface
RS-530
RS-449
X.21
RS-232
G64 codirectional
NRZ
ET100
ET100R
Line Code
Data Rate
Clock Modes
Clock Mode 0 (DCE1)
Clock Mode 1 (DCE2)
Clock Mode 2 (DTE1)
Clock Mode 3 (DTE2)
Clock Mode 4 (DTE3)
Control Signals
Time slot allocation
-V.35
-RS-530
-RS-449
-X.21
-RS-232
-G64K codirectional
-NRZ
-ET100 Bridge
-ET100R Router
(RS-530
Plus cable)
34 pin, M-Block Female
25 pin, DB25 Female
37 pin, DB37 Female (adapter cable)
15 pin, DB15 Female
25 pin, DB25 Female
15 pin, DB15 Female
BNC Female x 4
RJ-45 LAN connector
RJ-45 LAN connector
NRZ (except Ethernet and G64)
HDB3 (G64 codirectional)
NRZI plus 4B/5B (Ethernet)
N×56kbps or N×64kbps
where N equal 1 to 31 in CCS
and N equal 1 to 30 in CAS
2.048Mbps Unframed
Receive and transmit clock (recovered) to the
synchronous DTE
Receive and transmit clock (internal
oscillator) to the synchronous DTE
Receive clock to the synchronous, and
transmit clock from the synchronous device
Receive and transmit clock from the
synchronous DCE (from ETC and ERC pin )
Receive and transmit clock from the
synchronous DCE (all from ETC pin).
-CTS constantly ON
-DSR constantly ON, except during test loops
-DCD constantly ON, except during signal
loss
User defined (N.A. for Unframed)
8
Chapter 1. Introduction
Diagnostics
Test Switches/Diagnostics
LED indicators
PWR
TD
RD
RTS
DCD
Tx CLK Loss
Signal Loss
Sync Loss
Alarm
Error
Test
Green
Green
Green
Green
Green
Red
Red
Red
Red
Red
Red
Physical
Height:
Width:
Depth:
Weight:
Power supply
Voltage
Frequency
Power consumption
Environment
Temperature
Humidity
-Digital local loop back
-Analog local loop back
-Digital remote loop back
-Test pattern / generator
Power
Transmit data
Receive data
Request to sent
Data carrier detect
Transmit clock loss
E1 line signal loss
E1 line sync loss
E1 line alarm, include: BPV error / CRC4 error
/ Frame slip / All ones(AIS) / Remote alarm
Bit errors during integral BERT
Loop back and pattern test enabled
45 mm (1 3/4")
195 mm (7 5/8")
155 mm (6 1/8")
0.5 kg (1 lb 2 oz)
90~250VAC (universal AC model)
18~75VDC (universal DC model)
47 to 63 Hz for AC
10 Watts
-10°~60°C / 15°~140°F
0 to 95% non-condensing
9
Chapter 1. Introduction
1.3 E1 signal structure
The E1 line operates at a nominal rate of 2.048Mbps. The data transferred over
the E1 line is organized into frames, with each E1 frame containing 256 bits. The 256
bits consist of 32 time slots of eight bits each, which carry the data payload.
E1 transmission utilizes two main types of framing: Frame Alignment Signal (FAS)
and Multi-Frame Alignment Signal (MFAS). Framing is necessary in order for
equipment receiving the E1 signal to be able to identify and extract the individual
channels. PCM-30 (CAS) transmission system use MFAS framing along with the FAS
framing. PCM-31 (CCS) transmission system use only FAS framing.
Frame Alignment Signal (FAS)
The 2.048 Mbps frame consists of 32 individual time slots (numbered 0-31). As
described previously, each time slot consists of an individual 64Kbps channel of data.
In the FAS format, time slot 0 of every other frame is reserved for the frame
alignment signal pattern. Alternate frames contain the FAS Distant Alarm indication
bit and others bits reserved for national and international use.
Multi-Frame Alignment Signal (MFAS)
MFAS framing uses Channel Associated Signaling (CAS) to transmit A/B/C/D bit
signaling information for each of 30 channels. This method uses the 32 time slot
frame format with time slot 0 for the FAS and time slot 16 for the Multi-Frame
Alignment Signal and the Channel Associated Signaling.
E1 line signal
The basic E1 line signal is coded using the Alternate Mark Inversion (AMI) or
HDB3 rule.
In the AMI format, "ones" are alternately transmitted as positive and negative
pulse, whereas "zeros" are transmitted as a zero voltage level. AMI is not used in
most 2.048Mbps transmissions because synchronization loss occurs during long
strings of data zeros."
In the HDB3 format, a string of four consecutive zeros is replaced with a substitute
string of pulses containing an intentional bipolar violation. The HDB3 code
substitutions provide high pulse density so that the receiving equipment is able to
maintain synchronization with the received signal.
10
Chapter 1. Introduction
1.4 ETU01 Capabilities
E1 link line coding
The ETU01 and ETU01U support two E1 line codes:
AMI coding.
HDB3 coding.
E1 framing formats
The ETU01 supports three formats:
Unframed format.
FAS (CCS, PCM-31) format.
MFAS (CAS, PCM-30) format.
The ETU01U supports only unframed format.
User data channel rates
The ETU01 supports user data channel rates which are a multiple of 56 or
64kbps. For maximum flexibility, the ETU01 supports data rates up to 2.048Mbps.
The ETU01 supports flexible time slot assignment, allowing the user to freely
specify the selection of time slots. The ETU01U supports unframed operation with
a data rate of 2.048Mbps only.
1.5 System Timing Considerations
The ETU01 has the flexibility to meet the timing requirements of various system
configurations. The timing mode for the E1 link and the user data channel are
selected by the setting of DIP switches.
E1 link timing
The ETU01 E1 link receive path always operates on the receive clock. The ETU01
recovers the receive clock from the received E1 link data signal. The source of the
ETU01 E1 link transmit clock can be selected by the user.
The following E1 link transmit timing modes are available.
Recovery (loop back) timing:
The ETU01 E1 link transmit clock is locked to the recovered receive clock. This is
usually the timing mode selected for network operation.
Internal timing:
The ETU01 E1 link transmit clock is derived from the internal clock oscillator. This
timing mode is necessary in point-to-point applications over leased line. In this case,
one ETU01 must use the internal oscillator, and the others must operate from the
recovered clock.
External timing:
The ETU01 E1 link transmit clock is locked to the clock signal provided by the user
DCE connected to the data channel. When the data channel is used as the clock
source, the data channel must use clock timing mode 3 (DTE2) or 4 (DTE3).
11
Chapter 1. Introduction
The ETU01 can select from one of five clocking mode settings.
Clock mode 0 (DCE 1):
The ETU01 data channel operates as a DCE and provides both transmit and
receive clocks (recovered timing) to the data terminal equipment connected to the
user channel. The clocks are locked to the recovered E1 timing.
Clock Mode 0: Recovery
TC
DTE
Connected
Equipt.
RC
DCE
Data
Port
TX
E1
E1
transceiver
RX
Figure 1.1 Recovery timing
Clock mode 1 (DCE 2):
The ETU01 data channel operates as a DCE and provides both transmit and
receive clocks (internal oscillator timing) to the data terminal equipment connected to
the user channel. The clocks are locked to the oscillator timing.
DTE
Connected
Equipt.
TC
RC
Clock Mode 1: Internal
DCE
Data
Port
TX
E1
OSC
E1
transceiver
RX
Figure 1.2 Internal Timing
The internal oscillator provides the clocking source for both the user data receive
timing out the RC and TC pins and the E1 transmit timing.
12
Chapter 1. Introduction
Clock mode 2 (DTE 1):
In the transparent clocking mode, the ETU01 data channel supplies the receive
clock to the synchronous DCE, and accepts a transmit clock from the DCE (from the
ETC pin). The DCE must transmit data at the rate of the clock signal supplied by the
ETU01.
Clock Mode 2: Transparent
DCE
Connected
Equipt.
ETC
RC
Crossover
Cable
TX
DCE
Data
Port
E1
E1
transceiver
RX
Figure 1.3 Transparent Timing
The E1 receive clock provides the clocking source for the user data receive timing
out the RC pin. The user data transmit timing is input from the ETC pin and provides
the clock for the E1 transmit link.
Clock mode 3 (DTE 2):
The ETU01 data channel is physically wired as DCE. However, the ETU01 may
operate as a DTE when connected to other DCE equipment by using a cross-over
data cable and by setting the clock mode to the DTE2 setting. NOTE: The X.21 data
channel cannot be operated in clock timing mode 3 (DTE2).
Clock Mode 3: External
DCE
Connected
Equipt.
ETC
ERC
Crossover
Cable
TX
DCE
Data
Port
E1
E1
transceiver
RX
Figure 1.4 External Timing
The clock input from the ERC pin provides clocking source for the receive timing,
while clock input from the ETC pin provides the clocking source for the user data
transmit timing and the E1 transmit link.
13
Chapter 1. Introduction
Clock mode 4 (DTE 3):
The ETU01 data channel is physically wired as DCE (classed as communication
equipment). However, the ETU01 may operate as a DTE when connected to other
DCE equipment by using a cross-over data cable and by setting the clock mode to
the DTE3 setting. The ETU01 data channel then operates as a DTE and accepts
both transmit clock and receive clock (both from the ETC pin) from the user
equipment.
Clock Mode 4: External
DCE
Connected
Equipt.
ETC
TX
DCE
Data
Port
Crossover
Cable
E1
E1
transceiver
RX
Figure 1.5 External Timing
The clock input from the ETC pin provides both clocking sources for the receive
timing and for the user data transmit timing as well as clock for the E1 transmit link.
1.6 Functional Description
The ETU01 is a single port access unit for E1 or Fractional E1 service. The
ETU01U is a single port access unit for Unframed E1 only. The ETU01 AC model has
a universal, auto-switching power supply (90~250VAC) while the DC model's internal
regulator module accepts DC voltages from 18 to 75 volts.
The ETU01 data channel supports user-selectable transmission rates, which are
integer multiples of 56 or 64kbps, up to a maximum 2.048Mbps, for a line attenuation
of up to 43 dB on twisted pair or coax cable. This provides an approximate operating
range up to 2km (22AWG). (The ETU01U data interface supports a full 2.048Mbps
unframed rate ONLY.)
The ETU01 packs the data channel into E1 link time slots in user-selected time
slots. The unused time slots can insert IDLE code (In frame mode) or insert the
receive side time slots data (In cascade mode). (The ETU01U only supports
unframed mode and transparently uses the entire E1 bandwidth.)
The ETU01 fully meets all of the E1 specifications including ITU-T G.703, G.704,
G.706, G.732, and G.823.
14
Chapter 1. Introduction
1.7 Loopback Feature
The ETU01 features V.54 diagnostic capabilities for performing local loop back
and remote digital loop back. The operator at either end of the line may test both the
ETU01 and the line in the digital loop back mode. The loop back is controlled by
either a manual switch or by the V.35 DTE interface.
A front panel switch generates an internal 511 bit pseudo random test pattern,
according to ITU-T, for direct end-to-end integrity testing. The Error indicator flashes
for each bit error detected.
1.8 Typical System Applications
The fractional E1 data service is based on the assumption that the user data rate
is a fraction of the available E1 bandwidth, in multiples of 56K or 64K. In a typical
application (Figure 1.6), the ETU01 is used to connect the synchronous user DTEs
over an E1 line.
V.35 SYNC
Router
V.35 SYNC
Router
E1
V.35
V.35
ETU01
ETU01
Figure 1.6 E1 Point-to-Point Application
When connected in this fashion, one ETU01 must have its clock set to Internal
Oscillator to provide a reference clock for the E1. The unit on the opposite side of the
E1 link will set its clocking to E1 Recovery.
Line coding, Framing, and Timeslot assignment must match on both sides. The
ETU01 supports assigning timeslots in any order, from 1 to 31 (64Kbps to 1984Kbps)
timeslots. When set to unframed, the ETU01 provides full 2048Kbps throughput
between the V.35 DTE devices.
The ETU01U is not capable of fractional E1 operation and should be used where
only an unframed, transparent 2.048Kbps transmission is required.
15
Chapter 1. Introduction
In the previous application, the ETU01 is connected over hardwire point to point.
The ETU01 can also be connected to an E1 network or to E1's provided by SDH
equipment. Within the SDH network, the E1 can be cross mapped at the VC12 level
to provide point to point connections.
Figure 1.7 E1 Point-to-Point over SDH Application
In these cases the E1 timing will be set to "Recovery" to synchronize to the SDH
network's timing. In the following example, one unit will provide the E1 timing either
by using its internal oscillator.
Figure 1.8 Application with Channelized E1
16
Chapter 2. Installation
Chapter 2. Installation
2.1 General
This chapter provides detailed instructions for mechanical installation of the
ETU01. Following the completion of installation, please refer to Chapter 3 for
operating information.
2.2 Site Preparation
Install the ETU01 within reach of an easily accessible grounded AC outlet. DC
power capable units connect via terminal block connection. Allow at least 10 cm (4
inch) clearance at the rear of the ETU01 for signal lines and interface cables.
2.3 Mechanical Assembly
The ETU01 is designed for tabletop or bench installation, and is delivered
completely assembled. No provisions are made for bolting the ETU01 to the tabletop.
2.4 Electrical Installation
2.4.1 Power connection
AC power is supplied to the ETU01 through a standard 3-prong IEC C6 receptacle
(Refer to Figure 2.1) while the DC model utilizes a three pin terminal block (Refer to
Figure 2.2). The ETU01 should always be grounded through the protective earth lead
of the AC power cable or via Frame Ground (FG) terminal connection.
2.4.2 Rear panel connectors
The G.703 E1 interface connectors, located on the rear panel of the ETU01,
incorporate two BNC Coax and an RJ-45 connectors. (Appendix C&D provide
detailed information on the various interface connectors).
Figure 2.1 ETU01 rear panel AC
Figure 2.2 ETU01 rear panel DC
17
Chapter 2. Installation
E1 Line
BNC coax connector
Two BNC coax connectors marked TX and RX.
RJ-45 Connector
The pin assignments for the RJ-45 connector are as follows:
Pin:
Function:
4
TTIP (Transmit data out)
5
TRING (Transmit data out)
1
RTIP (Receive data in)
2
RRING (Receive data in)
Cable and Termination
Use a shielded twisted pair cable between the ETU01 and the DTE device. The
receivers on the ETU01 are 100 Ohm terminated. If problems are encountered with
the connection to the V.35 DTE interface, make sure that the DTE interface is
terminated correctly.
2.5 DIP Switches
2.5.1 Caution
To avoid accidental electric shock, disconnect the ETU01 power cord before
opening the cover. Access inside the equipment is only permitted to authorized and
qualified service personnel.
2.5.2 Procedure
1. Turn power OFF.
2. Disconnect all interface connections and the power cord from the AC outlet.
3. Loosen the screws at the left/right of the rear panel.
4. Remove the PCB.
5. Adjust the DIP switches as required, according to the tables in Appendix A.
6. Replace the PCB and tighten the screws.
7. Return all interface and power connections.
8. Turn power ON.
18
Chapter 2. Installation
Figure 2.3 ETU01 DIP Switches, Version 1.2G PCB
19
Chapter 2. Installation
Figure 2.4 ETU01U DIP Switches, Version 1.2G PCB
Note: There are no timeslot setting switches (SW1-4) on the ETU01U model.
20
Chapter 3. Operation
Chapter 3. Operation
3.1 General
This chapter describes the ETU01 controls and indicators, explains operating
procedures, and supplies instructions for settings. Installation procedures (in Chapter
2) must be completed and checked before attempting to operate the ETU01.
3.2 Controls and Indicators
All controls (push-button switches) and LED indicators are located on the ETU01
front panel. Depress a push-button to activate (turn ON) the corresponding control.
Release the push-button to deactivate (turn OFF) the control.
The function of each push-button and indicator is described in Table 3.1 and Table
3.2.
Figure 3.1 ETU01 Front Panel
Figure 3.2 ETU01U Front Panel
21
Chapter 3. Operation
Table 3.1 Control Functions
Control Switch
Function
Item
1
Loc dig loopbk
2
Loc ana loopbk
3
Rem loopbk
4
Pattern
Item
Indicator
The local digital loop back switch causes the
local ETU01 to loop E1 received data to its
transmitter.
The local analog loop back switch causes the
local ETU01 to loop transmitter output back to
its receiver. The transmitter sends 'all ones'
data to the line. This loop back may also be
activated from the DTE when the data port loop
back test function is set to ENA (enable).
The remote loop back switch causes the
remote ETU01 to loop E1 received data to its
transmitter. This loop back may also be
activated from the DTE when the data port loop
back test function is set to ENA (enable).
The pattern switch causes the ETU01 to send
and receive a 511 test pattern. If errors are
encountered, the Error LED indicator lights.
Table 3.2 LED indicators
Color
Meaning
1
PWR
Green
ON when power is on.
2
TD
Green
3
RD
Green
4
RTS
Green
5
DCD
Green
ON when SPACE is being transmitted.
Flashing when data is transmitted.
ON when SPACE is being received.
Flashing when data is received.
ON when terminal activates Request To
Sent.
ON when a valid receive signal is present.
6
Tx CLK Loss
Red
ON when transmitted clock is lost.
7
Signal Loss
Red
ON when received signal is lost.
8
Sync Loss
Red
ON when received frame sync is lost.
9
Alarm
Red
10
Error
Red
11
Test
Red
ON when E1 link has an alarm. (Include:
BPV error / CRC4 error /
Frame slip / All ones / Remote alarm).
ON when Pattern switch is activated and bit
errors are detected.
ON when the ETU01 is in any loop back
mode or Pattern is depressed.
22
Chapter 3. Operation
3.3 Operating Procedure
The ETU01 requires no operator attention once installed, except for occasional
monitoring of the front panel indicators. Intervention is only required when:
1. The ETU01 has to be adapted to new operational requirements.
2. Diagnostic loops are required.
3.3.1 Visual Indicators
The ETU01 is turned on when its AC power cord (or central office DC power) is
connected to an AC power outlet (or the DC input connections) and the power switch
is turned to the ON position. Initially, all LEDs will light, followed by all LEDs flashing
rapidly 5 times. This will indicate that the ETU01 is on and CPU has booted
successfully. Verify the ETU01 is in operation by checking that the front panel LED’s
match the following indicator conditions:
PWR: ON
TD: ON, OFF or Flashing
RD: ON, OFF or Flashing
RTS: ON (Off if no DTE device is connected)
DCD: ON (Off if E1 is not linked)
Tx CLK Loss:
OFF
Signal Loss:
OFF (On if no E1 receive signal is detected)
Sync Loss: OFF (On if E1 has no frame sync)
Alarm:
OFF
Err: OFF
Test: OFF
3.3.2 Configuration Settings
When connecting this equipment to service providers line, gather the following
information, then refer to the DIP switch tables to provision the unit.
1. Connect by Coaxial or Twisted Pair cable?
Coaxial cable terminates in BNC connectors @75 Ohms, while twisted pair
uses the RJ-45 connector @ 120 Ohms – See DIP SW6-1
2. Frame type is Unframed, CCS (PCM31) or CAS (PCM30) with or without CRC4?
Unframed is also called 'transparent' or 'un-structured' E1. CAS includes
signaling that is typical with voice over E1 applications. – See DIP SW1-1, SW5-5 &
SW5-6.
3. Timeslot assignment determines the data rate. ETU01 supports completely
random assignment. Timeslot settings have no effect if framing is Unframed. – see
DIP SW1, 2, 3, 4, 5
4. Line coding is typically HDB3, but the ETU01 also supports AMI. – see DIP SW5-4
5. E1 timing when connecting to ISP is almost always 'recovery' or clocked from the
main E1 timing. – see DIP SW5-1,2,3 (recovery timing has them all set OFF)
23
Chapter 3. Operation
3.4 Quick Start Guide
V.35 SYNC
Router
V.35 SYNC
Router
E1 Recovery timing
Internal Oscillator timing
E1
V.35
V.35
ETU01
ETU01
7
6
5
4
3
2
7
6
5
4
3
2
8
5
6
7
ON=Enabled Pushbuttons
4
3
1
2
DIPSW6
6
5
4
3
1
TS1~16, 1024kbps
2
DIPSW2 TS8~15
7
8
1
DIPSW3 TS16~23
8
1
DIPSW4 TS24~31
8
Based on the above point to point application, use the following DIP switch graphic to
visually set the ETU01 units. This example will use CCS (PCM31) framing with CRC4
and provide 1024kbps (16 timeslots) throughput.
ON=Coaxial 75 Ohms
8
7
6
5
4
3
2
1
DIPSW5
7
6
5
4
2
3
ON=CRC4 Enabled
1
DIPSW1 TS1~7
8
OFF=TP 120 Ohms
OFF=E1 UNFRAMED
ON=Internal Clock
OFF=E1 Recovery
24
Chapter 4. Test & Diagnostics
Chapter 4. Test & Diagnostics
4.1 General
This chapter contains procedures for performing system diagnostic tests.
4.2 Loop Back Tests
The loop back test buttons (Loc dig loopbk, Loc ana loopbk and Rem loopbk) and
the LED indicators built into the ETU01 allow for rapid checking of the data terminal,
ETU01 and the E1 line. Before testing the operation of the data system equipment
and their line circuits, ensure that all units are turned on and are configured correctly.
Note: DIP SW6-8 must be set ON to enable the front panel push-button switches.
4.3 Bit Error Rate Tester
When depressing the Pattern push-button switch, the Bit Error Rate Tester (BERT)
can be activated in any diagnostics test in which the test pattern transmitted is
received by another ETU01 (see Figure 4.1). When used opposite another ETU01,
either with the Pattern push-button switch depressed or with an external BERT
transmitting the same pattern (V.52 511-bit), the complete link can be tested. If errors
are encountered, the Error indicator LED will blink (for intermittent errors) or remain
on continuously (for continuous errors).
In this example, both units at the ends of the E1 link have their pattern generators
enabled.
Pattern
Depressed
Pattern
Pattern
Generator
Tester
E1
Link
Pattern
Pattern
Tester
Generator
ETU-01
ETU-01
Figure 4.1 BERT operation
25
Pattern
Depressed
RCV
XMT
External
BERT
511
Chapter 4. Test & Diagnostics
4.4 Local Analog Loop Back
This test is activated by depressing the "Loc ana loopbk" button. This test checks
the performance of the ETU01, the local data terminal and the connections between
them. It is performed separately at the local and the remote sites (see Figure 4.2):
Loc ana loopbk
Depressed
E1
CLK
XMTR
DATA
DATA
TERMINAL
CLK
RCVR
DATA
X
ETU-01
Figure 4.2 Local analog loop back
4.5 Local Digital Loop Back
This test is activated by depressing the "Loc dig loopbk" button. The test consists
of looping the received data back to the remote ETU01. This test checks the
performance of the local ETU01, the remote ETU01 and the connections between
them (see Figure 4.3).
Loc dig loopbk
Depressed
XMTR
Local
Data
Terminal
E1
RCVR
ETU-01
Figure 4.3 Local digital loop back
26
Chapter 4. Test & Diagnostics
4.6 Remote Digital Loop Back
This test is activated by depressing the "Rem loopbk" push button. The test
determines the performance both of the local and the remote ETU01 units, as well as
their interconnecting lines. The remote digital loop back test consists of providing a
loop back at the remote ETU01 (see Figure 4.4).
A system test may be performed by first depressing the remote loop back switch,
then depressing the pattern switch. The test pattern will be generated, sent out the
E1 link and looped back by the remote unit. If no errors are indicated by the error
LED, the link test has been successful.
Rem loopbk
Depressed
E1
CLK
XMTR
DATA
LOCAL
DATA
TERMINAL
RCVR
CLK
RCVR
DATA
XMTR
ETU-01
Remote Unit
Figure 4.4 Remote digital loop back
4.7 Quick E1 Self-test
Use this "Quick Test" to check the E1 circuits for a standalone unit.
Set DIP switches all OFF, except:
DIP SW5-1 ON (Internal Osc. Timing)
DIP SW6-1 ON (75 Ohm for Coax Cable)
DIP SW6-8 ON (enable pushbuttons)
Connect the E1 Tx to E1 Rx with a single coaxial cable.
Press the Pattern/test switch.
Test LED will remain Red. The E1 Tx and Rx circuits will be tested and pass if the
'Error' LED is not lit.
Without any coaxial cable connected, the logic circuits can be tested by pressing
both the 'Pattern' and 'Loc ana loopbk' switches. No 'Error' should light.
27
Chapter 4. Test & Diagnostics
This page left blank intentionally.
28
Appendix A. DIP SW. Setting ETU01
Appendix
A.1 ETU01 All DIP Switch Overview
DIP SW
GROUP
FUNCTION
COMMENT
1
Time slot 0 to 7 setting
See Table A.2
2
Time slot 8 to 15 setting
See Table A.3
3
Time slot 16 to 23 setting
See Table A.4
4
Time slot 24 to 31 setting
See Table A.5
5
Parameter group 1 setting
See Table A.6
6
Parameter group 2 setting
See Table A.7
Table A.1 All DIP Switch Overview
A.2 DIP SW1 Time Slot 0 To 7 Setting
DIP SW1
NO.
-1
-2
-3
-4
-5
-6
-7
-8
STATE
FUNCTION
OFF
Unframed mode
ON
Framed mode
OFF
Time slot 1 disable
ON
Time slot 1 enable
OFF
Time slot 2 disable
ON
Time slot 2 enable
OFF
Time slot 3 disable
ON
Time slot 3 enable
OFF
Time slot 4 disable
ON
Time slot 4 enable
OFF
Time slot 5 disable
ON
Time slot 5 enable
OFF
Time slot 6 disable
ON
Time slot 6 enable
OFF
Time slot 7 disable
ON
Time slot 7 enable
Table A.2 DIP SW1 Time Slot 0 to 7 Setting
29
COMMENT
Appendix A. DIP SW. Setting ETU01
A.3 DIP SW2 Time Slot 8 To 15 Setting
DIP SW2
NO.
-1
-2
-3
-4
-5
-6
-7
-8
STATE
FUNCTION
OFF
Time slot 8 disable
ON
Time slot 8 enable
OFF
Time slot 9 disable
ON
Time slot 9 enable
OFF
Time slot 10 disable
ON
Time slot 10 enable
OFF
Time slot 11 disable
ON
Time slot 11 enable
OFF
Time slot 12 disable
ON
Time slot 12 enable
OFF
Time slot 13 disable
ON
Time slot 13 enable
OFF
Time slot 14 disable
ON
Time slot 14 enable
OFF
Time slot 15 disable
ON
Time slot 15 enable
Table A.3 DIP SW2 Time Slot 8 to 15 Setting
30
COMMENT
Appendix A. DIP SW. Setting ETU01
A.4 DIP SW3 Time Slot 16 To 23 Setting
DIP SW3
NO.
-1
-2
-3
-4
-5
-6
-7
-8
STATE
FUNCTION
OFF
Time slot 16 disable
ON
Time slot 16 enable
OFF
Time slot 17 disable
ON
Time slot 17 enable
OFF
Time slot 18 disable
ON
Time slot 18 enable
OFF
Time slot 19 disable
ON
Time slot 19 enable
OFF
Time slot 20 disable
ON
Time slot 20 enable
OFF
Time slot 21 disable
ON
Time slot 21 enable
OFF
Time slot 22 disable
ON
Time slot 22 enable
OFF
Time slot 23 disable
ON
Time slot 23 enable
COMMENT
Note 1
Table A.4 DIP SW3 Time Slot 16 to 23 Setting
Note 1: In CAS mode (PCM30), DIPSW3-1 must not be set to ON.
31
Appendix A. DIP SW. Setting ETU01
A.5 DIP SW4 Time Slot 24 To 31 Setting
DIP SW4
NO.
-1
-2
-3
-4
-5
-6
-7
-8
STATE
FUNCTION
OFF
Time slot 24 disable
ON
Time slot 24 enable
OFF
Time slot 25 disable
ON
Time slot 25 enable
OFF
Time slot 26 disable
ON
Time slot 26 enable
OFF
Time slot 27 disable
ON
Time slot 27 enable
OFF
Time slot 28 disable
ON
Time slot 28 enable
OFF
Time slot 29 disable
ON
Time slot 29 enable
OFF
Time slot 30 disable
ON
Time slot 30 enable
OFF
Time slot 31 disable
ON
Time slot 31 enable
COMMENT
Table A.5 DIP SW4 Time Slot 24 to 31 Setting
32
Appendix A. DIP SW. Setting ETU01
A.6 DIP SW5 Parameter Group 1 Setting
DIP SW5
NO.
STATE
STATE
FUNCTION
COMMENT
OFF OFF OFF Clock mode 0 (DCE1)
ON OFF OFF Clock mode 1 (DCE1)
OFF ON OFF Clock mode 2 (DTE1)
-1,-2,-3
ON ON OFF Clock mode 3 (DTE2)
See Table A-8
OFF OFF ON Clock mode 4 (DTE3)
ON OFF ON Reserved
OFF ON ON Reserved
ON ON ON Reserved
-4
-5
-6
-7
-8
OFF
Line code: HDB3
ON
Line code: AMI
OFF
Frame mode: CCS (PCM31)
ON
Frame mode: CAS (PCM30)
OFF
CRC4: OFF
ON
CRC4: ON
OFF
Idle code: Mark (0xFF)
ON
Idle code: Flag (0x7E)
OFF
Data channel rate: N×64
ON
Data channel rate: N×56
Table A.6 DIP SW5 Parameter Group 1 Setting
33
Appendix A. DIP SW. Setting ETU01
A.7 DIP SW6 Parameter Group 2 Setting
DIP SW6
NO.
-1
-2
-3
-4
-5
-6
-7
-8
STATE
STATE
FUNCTION
COMMENT
OFF
Line Impedance: 120 Ohm
Coaxial (BNC)
ON
Line Impedance: 75 Ohm
TP (RJ-45)
OFF
RC Phase: Normal
ON
RC Phase: Inverted
OFF
TC Phase: Normal
ON
TC Phase: Inverted
OFF
DCD always ON, except E1 Sig.Loss
ON
DCD follows RTS, except E1 Sig.Loss
OFF
Reserved
ON
Reserved
OFF
Reserved
ON
Reserved
OFF
Data port loopback: Disable
ON
Data port loopback: Enable
OFF
Front panel push buttons: Disable
ON
Front panel push buttons: Enable
Table A.7 DIP SW6 Parameter Group 2 Setting
34
Appendix A. DIP SW. Setting ETU01
A.8 Clock Mode Details
CLOCK
MODE
DIPSW 5
STATE
-1
-2
-3
0
OFF OFF OFF
(DCE1)
1
ON OFF OFF
(DCE2)
2
OFF ON OFF
(DTE1)
3
ON ON OFF
(DTE2)
4
OFF OFF ON
(DTE3)
E1 LINE
TRANSMIT
CLOCK
USER DATA PORT
RECEIVE
TRANSMIT
CLOCK
CLOCK
RECOVERY
RECOVERY
RECOVERY
Output to RC
Output to TC
INTERNAL
INTERNAL
INTERNAL
OSCILLATOR
Output to RC
Output to TC
EXTERNAL
RECOVERY
EXTERNAL
Follows ETC
Output to RC
Input from ETC
EXTERNAL
EXTERNAL
EXTERNAL
Follows ETC
Input from ERC
Input from ETC
EXTERNAL
EXTERNAL
EXTERNAL
Follows ETC
Input from ETC
Input from ETC
Table A.8 Clock Mode Details
35
Appendix B. DIP SW. Setting ETU01U
B.1 ETU01U All DIP Switch Overview
DIP SW
GROUP
FUNCTION
COMMENT
5
Parameter group 1 setting
See Table B.2
6
Parameter group 2 setting
See Table B.3
Table B.1 All DIP Switch Overview
Note: The ETU01U operates in unframed mode ONLY. The user data rate is fixed at
2048K. DIPSW1 to DIPSW4 are not installed on the PCBA. The settings for DIPSW5
bits 5-8 and DIPSW6 bits 4-5 do not matter.
B.2 DIP SW5 Parameter Group 1 Setting
DIP SW5
NO.
STATE
STATE
FUNCTION
COMMENT
OFF OFF OFF Clock mode 0 (DCE1)
ON OFF OFF Clock mode 1 (DCE1)
OFF ON OFF Clock mode 2 (DTE1)
-1,-2,-3
ON ON OFF Clock mode 3 (DTE2)
See Table B-4
OFF OFF ON Clock mode 4 (DTE3)
ON OFF ON Reserved
OFF ON ON Reserved
ON ON ON Reserved
-4
-5
-6
-7
-8
OFF
Line code: HDB3
ON
Line code: AMI
OFF
Don't care
ON
Don't care
OFF
Don't care
ON
Don't care
OFF
Don't care
ON
Don't care
OFF
Don't care
ON
No function on ETU01U
Don't care
Table B.2 DIP SW5 Parameter Group 1 Setting
36
Appendix B. DIP SW. Setting ETU01U
B.3 DIP SW6 Parameter Group 2 Setting
DIP SW6
NO.
-1
-2
-3
-4
-5
-6
-7
-8
STATE
STATE
FUNCTION
COMMENT
OFF
Line Impedance: 120 Ohm
Coaxial (BNC)
ON
Line Impedance: 75 Ohm
TP (RJ-45)
OFF
RC Phase: Normal
ON
RC Phase: Inverted
OFF
TC Phase: Normal
ON
TC Phase: Inverted
OFF
DCD always ON, except E1 Sig.Loss
ON
DCD follows RTS, except E1 Sig.Loss
OFF
Reserved
ON
Reserved
OFF
Reserved
ON
Reserved
OFF
Data port loopback: Disable
ON
Data port loopback: Enable
OFF
Front panel push buttons: Disable
ON
Front panel push buttons: Enable
Table B.3 DIP SW6 Parameter Group 2 Setting
37
Appendix B. DIP SW. Setting ETU01U
B.4 Clock Mode Details
CLOCK
MODE
DIPSW 5
STATE
-1
-2
-3
0
OFF OFF OFF
(DCE1)
1
ON OFF OFF
(DCE2)
2
OFF ON OFF
(DTE1)
3
ON ON OFF
(DTE2)
4
OFF OFF ON
(DTE3)
E1 LINE
TRANSMIT
CLOCK
USER DATA PORT
RECEIVE
TRANSMIT
CLOCK
CLOCK
RECOVERY
RECOVERY
RECOVERY
Output to RC
Output to TC
INTERNAL
INTERNAL
INTERNAL
OSCILLATOR
Output to RC
Output to TC
EXTERNAL
RECOVERY
EXTERNAL
Follows ETC
Output to RC
Input from ETC
EXTERNAL
EXTERNAL
EXTERNAL
Follows ETC
Input from ERC
Input from ETC
EXTERNAL
EXTERNAL
EXTERNAL
Follows ETC
Input from ETC
Input from ETC
Table B.4 Clock Mode Details
38
Appendix C. Interface Connections
C.1 E1 Line Connectors
C.1.1 BNC Connectors
Conn.
Pin
Designation
Direction
Function
Center
TTIP
From ETU01
Transmit data
TX
Sleeve
TRING
Signal return
↔
Center
RTIP
To ETU01
Receive data
RX
Sleeve
RRING
Signal return
↔
Table C.1a E1 BNC connector pin allocation
C.1.2 RJ-45 Connector
The RJ-45 E1 connector follows USOC RJ-48C standard for terminating equipment.
Pin
Designation
Direction
Function
4
TRING
Transmit data(-)
From ETU01
5
TTIP
Transmit data(+)
RJ-45
7
FG
Frame ground
↔
1
RRING
Receive data(-)
To ETU01
2
RTIP
Receive data(-)
8
FG
Frame ground
↔
Table C.1b E1 RJ-45 connector pin allocation
C.2 X.21 Data Module Connector
When the ETU-01 is ordered with an X.21 interface, the physical interface is a 15pin female D-type connector wired in accordance with Table C.2.
SIGNAL
FUNCTION
PIN
CIRCUIT
DIRECTION
DESCRIPTION
Protective
Ground
1
Shield
ÅÆ
Chassis ground.
May be isolated from Signal Ground.
Signal
Ground
8
G
ÅÆ
Common signal ground.
Transmitted
Data
2
9
T(A)
T(B)
To ETU-01
Serial digital data from DTE.
Received
Data
4
11
R(A)
R(B)
Fm ETU-01
Serial digital data at the output of the
ETU-01 receiver.
Request to
Sent
3
10
C(A)
C(B)
To ETU-01
A ON signal to the ETU-01 when data
transmission is desired.
Data Carrier
Detect
5
12
I(A)
I(B)
Fm ETU-01
Constantly ON, except when Rx carrier
signal loss is detected.
Signal
Timing
6
13
S(A)
S(B)
Fm ETU-01
A transmit data rate clock for use by an
external data source.
External Tx
clock
7
14
B(A)
B(B)
To ETU-01
A serial data rate clock input from the
data source.
Table C.2 X.21 data module connector pin allocation
39
Appendix C. Interface Connections
C.3 RS-232 Data Module Connector
When the ETU-01 is ordered with a RS-232 interface, the physical interface is a
25-pin female D-type connector wired in accordance with Table C.3.
SIGNAL
FUNCTION
PIN
CIRCUIT
DIRECTION
Shield
1
AA
ÅÆ
Chassis ground.
May be isolated from signal ground.
7
AB
ÅÆ
Common signal ground.
2
BA
To ETU-01
3
BB
From ETU-01
Signal
Ground
Transmitted
Data
Received
Data
Request to
Sent
Clear to
Sent
Data Set
Ready
Data Terminal
Ready
Data Carrier
Detect
External
Transmit
clock
Transmit
Clock
Receive
Clock
4
5
6
20
CA
CB
CC
CD
DESCRIPTION
Serial digital data from DTE.
Serial digital data at the output of the ETU-01
receiver.
A ON signal to the ETU-01 when data
transmission is desired.
To ETU-01
From ETU-01
Constantly ON.
From ETU-01
Constantly ON,
except during test loops.
To ETU-01
8
CF
From ETU-01
24
DA
To ETU-01
15
DB
From ETU-01
17
DD
From ETU-01
Not used.
Constantly ON, except when a loss of the
received carrier signal is detected.
A transmitted data rate clock input from the
data source.
A transmitted data rate clock for use by an
external data source.
A received data rate clock for use by an
external data source.
Table C.3 RS-232 data module connector pin allocation
40
Appendix C. Interface Connections
C.4 V.35 Data Module Connector
When the ETU-01 is ordered with a V.35 interface, the physical interface is a 34pin female M-type connector wired in accordance with Table C.4.
SIGNAL
FUNCTION
Protective
Ground
Signal
Ground
Transmitted
Data
Received
Data
Request to
Sent
Clear to
Sent
Data Set
Ready
Data Terminal
Ready
Data Carrier
Detect
External
Transmit
clock
Transmit
Clock
Receive
Clock
External
Receive clock
Remote
Loopback
Local
Loopback
Test Indicator
PIN
CIRCUIT
DIRECTION
A
Frame
ÅÆ
Chassis ground.
May be isolated from signal ground.
ÅÆ
Common signal ground.
B
P
S
R
T
C
D
E
H
Signal
Ground
TD(A)
TD(B)
RD(A)
RD(B)
RTS
CTS
DSR
DTR
DESCRIPTION
To ETU-01
Serial digital data from DTE.
Serial digital data at the output of the ETU-01
receiver.
A ON signal to the ETU-01 when data
transmission is desired.
From ETU-01
To ETU-01
From ETU-01
Constantly ON.
From ETU-01
Constantly ON,
except during test loops.
To ETU-01
F
DCD
From ETU-01
U
W
ETC(A)
ETC(B)
To ETU-01
Y
AA
V
X
Z
BB
TC(A)
TC(B)
RC(A)
RC(B)
ERC(A)
ERC(B)
HH
RL
To ETU-01
JJ
LL
To ETU-01
KK
TM
From ETU-01
Not used.
Constantly ON, except when a loss of the
received carrier signal is detected.
A transmitted data rate clock input from the
data source.
A transmitted data rate clock for use by an
external data source.
A received data rate clock for use by an
external data source.
A received serial data rate clock input from
the DTE.
When on, commands ETU-01 into remote
loopback, can disable by dipsw.
When on, commands ETU-01 into local
loopback, can disable by dipsw.
From ETU-01
From ETU-01
To ETU-01
ON during any test mode
Table C.4 V.35 data module connector pin allocation
41
Appendix C. Interface Connections
C.5 RS-530 Data Module Connector
When the ETU-01 is ordered with an RS-530 interface, the physical interface is a
25-pin female D-type connector wired in accordance with Table C.5.
SIGNAL
FUNCTION
Protective
Ground
Signal
Ground
Transmitted
Data
Received
Data
Request to
Sent
Clear to
Sent
Data Set
Ready
Data
Terminal
Ready
Data Carrier
Detect
External
Transmit
clock
Transmit
Clock
Receive
Clock
Remote
Loopback
Local
Loopback
Test
Indicator
PIN
CIRCUIT
DIRECTION
1
Frame
ÅÆ
Chassis ground.
May be isolated from signal ground.
7
AB
ÅÆ
Common signal ground.
2
14
3
16
4
19
5
13
6
22
BA(A)
BA(B)
BB(A)
BB(B)
CA(A)
CA(B)
CB(A)
CB(B)
CC(A)
CC(B)
20
23
CD(A)
CD(B)
To ETU-01
8
10
CF(A)
CF(B)
From ETU-01
24
11
DA(A)
DA(B)
To ETU-01
15
12
17
9
DB(A)
DB(B)
DD(A)
DD(B)
21
RL
To ETU-01
18
LL
To ETU-01
25
TM
From ETU-01
To ETU-01
From ETU-01
To ETU-01
From ETU-01
From ETU-01
From ETU-01
From ETU-01
DESCRIPTION
Serial digital data from DTE.
Serial digital data at the output of the
ETU-01 receiver.
A ON signal to the ETU-01 when data
transmission is desired.
Constantly ON.
Constantly ON,
Except during test loops.
DTR not used, used for a received
serial data rate clock input from the
DTE.
Constantly ON, except when a loss of
the received carrier signal is detected.
A transmitted data rate clock input
from the data source.
A transmitted data rate clock for use
by an external data source.
A received data rate clock for use by
an external data source.
When on, commands ETU-01 into
remote loopback, can disable by
dipsw.
When on, commands ETU-01 into local
loopback, can disable by dipsw.
ON during any test mode
Table C.5 RS-530 data module connector pin allocation
42
Appendix C. Interface Connections
C.6 RS-530 to RS-449 Adapter Cable
When the ETU-01 is ordered with a RS-449 interface, the physical interface is a 25
pin D-type connector (RS-530) with an adapter cable to 37-pin male D-type connector
wired in accordance with Table C.6.
SIGNAL
FUNCTION
RS-530
PIN
RS-449
PIN
RS-449
CIRCUIT
1
1
Frame
SG,RC,
SC
SD(A)
SD(B)
RD(A)
RD(B)
RS(A)
RS(B)
CS(A)
CS(B)
DM(A)
DM(B)
Protective
Ground
Signal
Ground
Transmitted
Data
Received
Data
Request to
Sent
Clear to
Sent
Data Set
Ready
2
14
3
16
4
19
5
13
6
22
19,20,
37
4
22
6
24
7
25
9
27
11
29
Data Terminal
Ready
20
23
12
30
TR(A)
TR(B)
Data Carrier
Detect
External Transmit
clock
Transmit
Clock
Receive
Clock
8
10
24
11
15
12
17
9
13
31
17
35
5
23
8
26
RR(A)
RR(B)
TT(A)
TT(B)
ST(A)
ST(B)
RT(A)
RT(B)
Remote
Loopback
21
14
RL
Local
Loopback
18
10
LL
Test Indicator
25
18
TM
7
DESCRIPTION
Chassis ground.
May be isolated from signal ground.
Common signal ground.
Serial digital data from DTE.
Serial digital data at the output of the
ETU-01 receiver.
A ON signal to the ETU-01 when data
transmission is desired.
Constantly ON.
Constantly ON,
Except during test loops.
DTR not used, used for a received
serial data rate clock input from the
DTE.
Constantly ON, except when a loss of
the received carrier signal is detected.
A transmitted data rate clock input
from the data source.
A transmitted data rate clock for use
by an external data source.
A received data rate clock for use by
an external data source.
When on, commands ETU-01 into
remote loopback, can disable by
dipsw.
When on, commands ETU-01 into local
loopback, can disable by dipsw.
ON during any test mode
Table C.6 RS-530 to RS-449 pin allocation
43
Appendix C. Interface Connections
C.7 G.703/64K Codirectional Connector
When the ETU-01 is ordered with a G.703/64K interface, the physical interface is a
15-pin female D-type connector wired in accordance with Table C.7.
SIGNAL
FUNCTION
Protective
Ground
Signal
Ground
Transmitted
Data
Received
Data
PIN
DIRECTION
4
10
ÅÆ
Chassis ground.
May be isolated from Signal Ground.
8
ÅÆ
Common signal ground.
3
11
1
9
DESCRIPTION
To ETU-01
Serial Codirectional data from DTE.
Fm ETU-01
Serial Codirectional data at the
output of the ETU-01 receiver.
Table C.7 G.703/64K Codirectional pin allocation
44
Appendix C. Interface Connections
C.8 G.703 NRZ
When the ETU-01 is ordered with a G.703 NRZ interface, the physical interface is
4 BNC female connectors wired in accordance with Table C.8.
Specifications:
Line Code:
Impedance:
Signal Level:
NRZ
50 ohms
Logic "1": 0V +/- 0.3V
Logic "0": -1.5V +/- 0.3V
2048K Max.
Speed:
SIGNAL
FUNCTION
Received
Data
Received
Timing
Transmitted
Data
Transmit
Timing
DIRECTION
Fm ETU-01
Fm ETU-01
DESCRIPTION
Serial NRZ data at the output of the
ETU-01 receiver.
Serial NRZ timing at the output of
the ETU-01 receiver.
To ETU-01
Serial NRZ data from DTE.
To ETU-01
Serial NRZ timing from DTE.
Table C.8 G.703 NRZ/BNC pin allocation
Settings: (by adjustment of jumpers on interface card)
Rx timing; "Normal" or "Inverted"
Tx timing; "Normal" or "Inverted"
45
Appendix C. Interface Connections
C.9 ET100 10/100BASE-TX Ethernet
Bridge
When the ETU-01
is ordered with an
ET10/100 Interface, the unit is not only an
access unit for E1, but also becomes a high
performance WAN bridge for 10Base-T or
100Base-TX Ethernet extension. The physical
interface is a RJ-45 connector, with the pin
assignment as follows:
MDI
1. Tx +
2. Tx 3. Rx +
6. Rx -
MDI-X
1. Rx +
2. Rx 3. Tx +
6. Tx -
DIP Switch Settings
DIP
1
2
STATE
ON*
OFF
ON
OFF*
3
4
5
6
7|
8
ON
OFF*
ON
OFF*
ON
OFF*
ON*
OFF
OF
F
ON
OF
F
ON
OF
F
OF
F
ON
ON
FUNCTION
Enable MAC filtering
Disable Filtering
Enable 802.3x flow
control
Disable 802.3x flow
contol
NO Auto-negotiation
Auto-negotiation
1
Half Duplex
1
Full Duplex
1
10BASE-T LAN speed
1
100BASE-TX LAN speed
Enable Auto MDIX
MDI (1:1 to HUB)
Memory configuration #1
Memory configuration #2
Memory configuration #3
Reserved
* factory default settings
1
no effect when sw3 is off (auto-negotiation is on)
2
Note : Some LAN card modules have a “Power Managment”
feature. The Tx Side won’t transmit data in "Sleep mode".
. In this case, if the “Link” status is not on, the switch #6 needs
to be on the “ON”
position then the normal function should be remained.
46
LED Indicators
Designation
Full (yel)
Link (grn)
Error (red)
100M (yel)
Receive (yel)
Transmit(yel)
Indication
ON=Full Duplex
ON=LAN Link
ON=LAN Error
ON=Fast Ethernet
ON=LAN Rx data
ON=LAN Tx data
Memory configuration detail
#1 LAN to WAN 308 packets, WAN to LAN 32 packets
#2 LAN to WAN 170 packets, WAN to LAN 170 packets
#3 LAN to WAN 32 packets, WAN to LAN 308 packets
Appendix C. Interface Connections
C.10 ET100R 10/100BASE-TX Ethernet Router
When the ETU-01 is ordered with an
ET100R Interface, the unit is not only an
access unit for E1, but also becomes a high
performance Router for 10Base-T or
100Base-TX Ethernet LAN connection.
Configuration of the router is beyond the
scope of this manual. Please refer to the
CDROM based instructions that are
included with the router module. The LAN
physical interface is a RJ-45 connector.
The ET100R router module is configured
with via CLI commands on a RS-232 serial
interface or via Telent. Configuration is also
supported by web browser GUI. A special
cable must be used to connect serial
terminal to the modules DIN connector. Pinouts are provided below for reference.
RS-232
DTE
MDI
1. Tx +
2. Tx 3. Rx +
6. Rx -
PIN
1
2
3
4
5
6
7
8
47
Circuit
NC
RX
TX
NC
GND
NC
RTS
CTS
Direction
IN
OUT
Description
Receive data
Transmit data
Signal ground
OUT
IN
Request to
Send
Clear to Send
Appendix D. Interface Module Options
At the time of this printing, the ETU-01 has nine types of user-replaceable data
channel modules.
1. ETU/TTU-V35
V.35 Module:
Provides one fully compliant ITU-T V.35
interface on a Female "M" block, 34 pin
connector. Operates at any n56/n64 fractional
or unframed E1 speed. No additional cable is
included. This module presents DCE signals to
a directly connected DTE device.
2. ETU/TTU-530
RS-530 Module:
Provides one fully compliant EIA RS-530
interface on a female "D" type 25 pin
connector. Operates at any n56/n64 fractional
or unframed E1 speed. No additional cable is
included. This module presents DCE signals to
a directly connected DTE device.
3. ETU/TTU-449
RS-449 Module:
Provides one fully compliant EIA RS-449
interface by placing an adapter cable on the
ETU/TTU-530 module and providing a male
"D" type 37 pin connector. Operates at any
n56/n64 fractional or unframed E1 speed. The
additional cable is included. This module
presents DCE signals to a directly connected
DTE device.
48
Appendix D. Interface Module Options
4. ETU/TTU-X21
X.21 Module:
Provides one fully compliant ITU-T X.21
interface on a female "D" type 15 pin
connector. Operates at any n56/n64 fractional
or unframed E1 speed. No additional cable is
included. This module presents DCE signals
to a directly connected DTE device.
5. ETU/TTU-232
RS-232 Module:
Provides one fully compliant EIA RS-232
SYNC interface on a female "D" type 25 pin
connector. Operates at n56/n64 fractional E1
speed up to 128Kbps (ASYNC 19.2K). No
additional cable is included. This module
presents DCE signals to a directly connected
DTE device.
6. ETU/TTU-G64
G.703/64K Module:
Provides one fully ITU-T compliant G.703
Codirectional (line code) 64Kbps interface on
a female "D" type 15 pin connector. Operates
at 64Kbps only. No additional cable is
included. User must supply their own DB15F
connector.
49
Appendix D. Interface Module Options
7. ETU/TTU-NRZ
NRZ Module:
Provides one NRZ interface on four(4) female
BNC type connectors. Operates at any
n56/n64 fractional or unframed E1 speed. The
4 signal cables provide TxData, RxData, TxClk
and RxClk.
8. ETU/TTU-ET10/100
Ethernet Bridge Module:
Utilizes standard LAN pin out on one RJ-45
connector, providing connection to Ethernet
(10Base-T) or Fast Ethernet (100Base-TX)
networks utilizing UTP (unshielded twisted pair)
cabling. Operates at any n56/n64 fractional or
unframed E1 speed.
9. ETU/TTU-ET100R
Ethernet Router Module:
Provides
an
Ethernet
(IEEE802.3
or
IEEE802.3u) Router function over the WAN
when matched to another ET100R module,
Cisco router, or a compatible router under PPP
or HDLC protocol. The interface connection is
an auto MDI-X, 10/100BASE-TX Ethernet on a
shielded RJ-45 connector. Configuration is via
RS-232 terminal, Telnet, or via web based GUI.
Operates at any n56/n64 fractional or unframed
E1 speed.
50
CTC Union Technologies Inc
Attn : Technical Support Division
From Company:
Name:
Tel: (
)
Fax:(
)
MODEL: … ETU01 … ETU01U
ACTIVITY: As attached in DIP switch setting table
SYS CONFIGURATION:
Question:
Fax:(886)2 27991355
Tel:(886)2 26591021
E-mail:[email protected]
Taipei Taiwan
Technical Inquiry Form
MODEL No.: … ETU01 … ETU01U
Please fill in the DIP switches configuration with '9' marks into the following table.
Send it to us by fax, and we will reply to you immediately.
SW NO.
DIP
SW1
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
SW2
SW3
SW4
SW5
SW6
FUNCTION
Unframed/ framed
Timeslot 1
Timeslot 2
Timeslot 3
Timeslot 4
Timeslot 5
Timeslot 6
Timeslot 7
Timeslot 8
Timeslot 9
Timeslot 10
Timeslot 11
Timeslot 12
Timeslot 13
Timeslot 14
Timeslot 15
Timeslot 16
Timeslot 17
Timeslot 18
Timeslot 19
Timeslot 20
Timeslot 21
Timeslot 22
Timeslot 23
Timeslot 24
Timeslot 25
Timeslot 26
Timeslot 27
Timeslot 28
Timeslot 29
Timeslot 30
Timeslot 31
Clock Mode
Clock Mode
Clock Mode
Line Code
Frame Mode
CRC4
Idle Code
Data Port Rate
Line Impedance
RC Phase
TC Phase
DCD setting
Reserved
Reserved
Data Port Loop Back
Front panel switch Enable
Please advise any additional comments:
Your Setting
ON
OFF
CTC Suggestion
ON
OFF
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