DSB45 Development Support Box
Confidential / Released
s
DSB45_HD_V05
Page 12 of 50
01.02.2008
2.4
Overview of inner and outer interfaces
DSB45 is delivered in a sheet steel housing. All interfaces needed to meet basic test
requirements are accessible from outside (see Chapter 2.4.1 for an overview). A number of
additional interfaces are placed inside the housing (see Chapter 2.4.2).
2.4.1
Summary of outer interfaces
The outer interfaces are accessible on the front and rear panels of the DSB45 Development
Support Box.
All outer interfaces are protected against electrostatic discharge (ESD). The CE conformity
mark applies only to the closed DSB45 Development Support Box with the GSM module
mounted inside the metal housing.
Figure 4: DSB45 front view
Figure 5: DSB45 rear view
Table 1: Outer interfaces on the front panel of DSB45
Front panel
printing
Reference
number
Description
IGT
X132
Ignition push button.
PD
X131
Emergency-off or power-off push button.
Handset
X502
Audio interface 1 (4-pin Western jack). Intended for connecting a
handset.
SIM
X503
SIM card holder.
RF
X506
RF signal (SMA connector).
On
V618
Power LED. Green LED that indicates the operating voltage for the
DSB45 and the connected GSM module.
Table 2: Outer interfaces on the rear panel of DSB45
Rear panel
printing
Reference
number
Description
9V
GND
X604 (red)
X605 (black)
Supply v9V. Connectors used to attach a laboratory PSU.
COM1
X201
Application interface 1 (9-pin SubD connector). RS-232C interface with
8 data and modem control lines. Intended for GPRS data, circuit
switched data, multiplexed data, AT commands.
Connects to the module’s serial interface ASC0. Applies to all Siemens
GSM modules listed in Chapter 1.1.
