User guide

EG_GenPro78e_1003_UG_007_UK Page 35 / 41
Description and non-contractual illustrations in this document are given as an indication only.
ERCO & GENER reserves the right to make any modifications.
8.2.2 Audio interface
The audio interface is accessible via the 15-pin Sub HD connector (see chapter 7.4).
Table: Characteristics of the audio interface on the 15-pin Sub HD connector
Mic Input Parameter/Conditions Min Typ Max Units
Maximum Input Range –
Mic(+) to Mic(-)
Inputs 3 dBm0 (Max. digital
sample amplitude when PGA
gain set to 0 dB)
32.5 mV
RMS
Nominal Ref. Level –
Mic(+) to Mic(-)
Differential MIC -10 dBm0
Differential Input Resistance –
Mic(+) to Mic(-)
Differential MIC,
MICAMP gain = 25.6 dB
36 k
Microphone Pre-Amplifier Gain Differential MIC 25.6 dB
8.2.3 SIM Interface
Table: SIM card characteristics
SIM Card 3 V or 1.8 V
8.2.4 GSM/DCS
8.2.4.1 RF performances
The RF performances are compliant with the ETSI GSM 05.05 recommenda
TheRFperformancesforreceiverandtransmitteraregiveninthetablebelow.
tion.
Table: Receiver and Transmitter RF performances
Receiver
850MHz/900MHz sensitivity - 106 dBm, GPRS Coding Scheme 1 (CS1)
1800MHz/1900MHz sensitivity - 106 dBm, GPRS Coding Scheme 1 (CS1)
Transmitter
Transmit Power (Power Class1 - 850/900) at ambient
temperature
33 dBm +/- 2 dB @ antenna connection
Transmit Power (Power Class4 - 1800/1900) ) at
ambient temperature
30 dBm +/- 2 dB @ antenna connection