TC65 TERMINAL SIEMENS, TC65 TERMINAL Datasheet - Page 43

• Manufacturer Part Number: TC65 TERMINAL
• Description: GSM/GPRS JAVA TERMINAL PACK
• Manufacturer: SIEMENS

Specifications of TC65 TERMINAL

• Rohs Compliant: YES

Table 16: Operating conditions
1)
Continuous operation at 65°C environmental temperature is not possible in every operating mode due to intrinsic heating of
the TC65 Terminal.
The level of intrinsic heating depends on several factors depending on the level of the supply voltage, the operating mode
(GPRS/GSM) and the network coverage. The maximum possible environmental temperature in GPRS Class 12 operating
mode (MS-configuration 1down/4up, PCL5/Gamma3, 12V supply voltage, 900MHz band, with power reduction) is about 45°C.
When this temperature is exceeded the TC65 Terminal will send a request to the base station for changing the GPRS-Class
(e.g. from GPRS Class 12 to GPRS Class 8). At a successful change of the GPRS class the intrinsic heating of the TC65
Terminal will be reduced. If the board temperature decreases by an amount of 15°C the GPRS Class will be stepped up again.
Continuous operation in Talk mode is possible up to an environmental temperature of about 67°C (12V, 900MHz, PCL5). With
decreasing transmit power of the TC65 Terminal, the maximum possible environmental temperature increases at which a
GPRS continuous operation at PCL5/Gamma3 is possible.
For a short time it is also possible to establish a GPRS Class 12 connection at PCL5/Gamma3 and at an ambient temperature
of 65°C. Starting a data download in GPRS Class 12 mode with power reduction at 65°C environmental temperature the
request for a change of the GPRS Class will be enabled after 7 minutes.
This information applies to 12V supply voltage. At 8V resp. 30V the intrinsic heating is higher, whereby the maximum possible
environmental temperature will be lower.
Special values of maximum ratings
The following table shows the highest possible ambient temperatures at which the temperature of the NTC will reach a final
value of 81°C (GPRS Class 10,12 Temperature of GPRS Class Change) or the final shut down temperature 90°C (GPRS
Class 8 and Voice Call).
Table 17: Highest temperatures
The following table shows the longest possible duration of a connection until 81°C (Temperature of GPRS Class Change) are
reached at the NTC when the ambient temperature is 65°C.
Table 18: Longest duration until 81°C are reached
The following table shows the longest possible duration of connection when the GPRS Class Change from GPRS Class 12 or
10 to GPRS Class 8 did not work properly and 90°C (Temperature of Hardware shut off) will be reached at the NTC (ambient
temperature is 65°C).
Table 19: Longest duration when GPRS Class Change does not work properly
TC65 Terminal_HD_V01.041
TC65 Terminal Hardware Interface Description
Strictly Confidential / Released
Parameter
Ambient temperature
Supply voltage V
measured at (6-pole) western
jack plug (1, 2 to 5,6)
Terminal horizontal, normal position
GPRS Class 8 PCL5/Gamma3
GPRS Class 10 PCL5/Gamma3
GPRS Class 12 PCL5/Gamma3 with Power Reduction
GPRS Class 12 PCL5/Gamma3 without Power Reduction
Terminal horizontal, normal position
GPRS Class 10 PCL5/Gamma3
GPRS Class 12 PCL5/Gamma3 with Power Reduction
GPRS Class 12 PCL5/Gamma3 without Power Reduction
Terminal horizontal, normal position
GPRS Class 8 PCL5/Gamma3
GPRS Class 10 PCL5/Gamma3
GPRS Class 12 PCL5/Gamma3 with Power Reduction
GPRS Class 12 PCL5/Gamma3 without Power Reduction
POWER
Min
-30
7.6 lowest voltage
(minimum peak) incl. all
ripple and drops
Page 43 of 58
67°C
48°C
45°C
34°C
7 minutes
---
---
Highest possible ambient temperature
Longest possible duration of connection
11 minutes
Longest possible duration of connection
Continuous operation
22 minutes
14 minutes
Typ
25
12
Max
65
30
1)
s
Unit
°C
V
29.09.2005