Adtran TRC3202 用户手册
Section 4, Trouble Shooting Guide
TRACER 2210/3202 System Manual
48
© 2001 ADTRAN, Inc.
61280012L1-1A
1.
OVERVIEW
In general, system configuration errors fall into 1 of 4 categories:
(1) 2210-to-3202 cabling errors
(2) Invalid 2210 settings
(3) DTE configuration errors
(4) RF errors
2.
2210-TO-3202 CABLING ERRORS
Ensure that the electrical connection between the cable splices and the terminal block plug on the 2210 is
correct, using an ohmmeter. If all 4 conductors are intact, ensure that the pin-out is correct for each
connector, i.e. pin 1 on the terminal block is attached to conductor 1 on the spliced cable, etc.
correct, using an ohmmeter. If all 4 conductors are intact, ensure that the pin-out is correct for each
connector, i.e. pin 1 on the terminal block is attached to conductor 1 on the spliced cable, etc.
3.
INVALID 2210 SETTINGS
Several V.35 interface options are available for the TRACER 2210 for connecting to DTE equipment (eg.
router, bridge), and its interface with the radio link.
router, bridge), and its interface with the radio link.
Timing Settings
Timing settings determine how the TRACER 2210 synchronizes itself to external equipment, including the
DTE hardware attached to the V.35 port, and the remote 2210 unit on the opposite end of the radio link. A
fully synchronized and operational TRACER 2210/3202 system requires that one and only one piece of
communications equipment control timing throughout the system. The TRACER 2210 has been flexibly
designed so that either the 2210 or the attached DTE equipment can mandate timing.
DTE hardware attached to the V.35 port, and the remote 2210 unit on the opposite end of the radio link. A
fully synchronized and operational TRACER 2210/3202 system requires that one and only one piece of
communications equipment control timing throughout the system. The TRACER 2210 has been flexibly
designed so that either the 2210 or the attached DTE equipment can mandate timing.
Most DTE equipment will expect timing to originate from the 2210 unit. In these common applications the
factory default, or AUTO, settings stored in the 2210 will synchronize the DTE and TRACER 2210/3202
circuits together. For those DTE devices that require self-regulated system timing, the TRACER 2210
timing settings will need to be changed via the 2210 menu.
factory default, or AUTO, settings stored in the 2210 will synchronize the DTE and TRACER 2210/3202
circuits together. For those DTE devices that require self-regulated system timing, the TRACER 2210
timing settings will need to be changed via the 2210 menu.
V.35 Settings
Interface-related errors may also occur if the number of 56/64 kHz sub-channels is incompatible with the
DTE hardware. To remedy this problem, set the 2210 V.35 rate within the limits of the DTE bandwidth.
DTE hardware. To remedy this problem, set the 2210 V.35 rate within the limits of the DTE bandwidth.
There are two distinct clock circuits in the 2210. One clock circuit interfaces with the V.35 port, and the
other clock circuit interfaces with the radio channel (network). The V.35 clock setting determines whether
the V.35 port accepts (sinks) or provides (sources) the clock used to synchronize data transmission between
the DTE unit and the 2210. The 2210 internal clock setting determines whether the internal 2210
oscillator, DTE received clock, or radio interface clock is used as the internal clock source for the 2210
unit. In most applications, the default (AUTO) timing settings for these two clocks will be correct.
other clock circuit interfaces with the radio channel (network). The V.35 clock setting determines whether
the V.35 port accepts (sinks) or provides (sources) the clock used to synchronize data transmission between
the DTE unit and the 2210. The 2210 internal clock setting determines whether the internal 2210
oscillator, DTE received clock, or radio interface clock is used as the internal clock source for the 2210
unit. In most applications, the default (AUTO) timing settings for these two clocks will be correct.
The TRACER 2210 is factory-configured to network timing, and so acts as standard DCE hardware when
connected via a V.35 cable to DTE hardware. When using the 2210 in non-standard applications, please
consult both the DTE hardware user’s manual and TRACER 2210 user’s manual for proper settings
information.
connected via a V.35 cable to DTE hardware. When using the 2210 in non-standard applications, please
consult both the DTE hardware user’s manual and TRACER 2210 user’s manual for proper settings
information.