what difference between Autocom CDP + and Delphi DS150E
Currently, a huge number of
sellers offer the Autocom CDP + and Delphi DS150E diagnostic scanner. At
the same time, in a number of cases, unscrupulous sellers, through their
ignorance or knowingly with deception, offer low-quality devices. In this article,
we will consider the issue of choosing a high-quality two-board version of
Autocom CDP + or Delphi DS150E.
The two-board versions of Autocom CDP + and Delphi DS150E are essentially
the same, since inside there are absolutely identical boards and their
difference is only in the case, while two devices can work with three programs
Autocom CDP +, Delphi DS150E and WURTH WOW (we will not talk about the rest of
the twin programs, but they are available).
The version of the CDP + dual-board scanner according to the
circuitry is made on the basis of the ARM STM32F processor, so there is no need
for external memory, the SN serial number consists of six digits. In this
version of the scanner, the circuitry does not use the OKI M6636B microcircuit
(unlike the first outdated version of the CDP PRO CARS scanner without +), and
support for BMW and Ford is implemented according to a different principle.
To determine the version of the board, the quality and rating of the components of the two-board device, we ask the seller to disassemble the diagnostic adapter in your presence. If the seller refuses to open the device for any reason, then it is better to refuse the deal immediately.
Board version
Currently, there are a large number of versions of the boards of
a two-board device, but only version 3.0 can boast of stable operation. To
determine the revision of the board, you need to look at the inscription on the
main board, where the board release will be indicated.
However, at present, such an inscription will not be a guarantee
that version 3.0 is in your hands, as a result of which we turn the board over
and visually compare the location and appearance of the microcircuits (in the
photo, the board of the TCS MAIN v3.0 version):
We also pay attention to the fact that in a high-quality
version, the adapter connectors for the second board with the relay must be
double.
Relays
Particular attention should be paid to the quality and rating of
the relay. The rating of the relay in the two-board version of the scanner
must be at least 4.5V, preferably at 5V of Japanese production, most often it
is a NEC relay. Once again, we focus on the relays should be at least
4.5V, and even better at 5 VOLTS (marking NEC EA2-5 or NEC
EA2-5NU). Relays of a lower rating will fail during operation, which will
lead to the inoperability of the device itself..
You can also double-check the rating of the relay, but this will
require a multimeter. According to the datasheet, the coil resistance
should be: for a 4.5V relay - 145 ohms, and for a 5V relay - 178 ohms.
Suppressor
For work, especially with trucks, a lot of attention should be paid to the suppressor rating. The suppressor rating in the automotive industry is commonly used at 29-32V. Thus, the suppressor marking should be BEZ (5SMCJ24CA) - this is a bidirectional suppressor, or its unidirectional counterpart GEZ (5SMCJ24A), or GFK is a unidirectional one.
Microcircuit Si9241A
K-line and L-line must be implemented on microcircuit Si9241A
(microcircuit marking 9241A).
Zener diode for 27-30 volts
Zener diodes (Zener diode) for 27-30 volts must be installed in
the device. Zener diodes for 27-30 volts are necessary to eliminate distortion
of the receive / transmit signal, as well as to protect the k-line, the driver will close if during the period of signal transmission for
some reason a voltage more than calculated for the k-line comes, by putting the
field-effect transistor in the strapping into a high-resistance state. In
the case when a diode is installed instead of a zener diode, the field-effect
transistor will be broken, which will lead to the inoperability of the device.
Significant heating of the device.
When diagnosing trucks, it is very important to refine the
device. During the operation of the device, a significant heating of the
board occurs due to the fact that the wrong resistor values ??are set in the
load switching keys and they must be replaced with resistors with a nominal
value of 2.4 kOm - 3.3 kOm. Also, heating is possible due to the
installation of a suppressor of the wrong rating (for the correct ratings, see
the article above).