hfu2.pdf

(65 KB) Pobierz
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
PAMS Technical Documentation
HFU–2
Original 11/97
833125334.050.png
PAMS
HFU–2
Technical Documentation
CONTENTS
Introduction
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Summary
3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
List of Modules
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
Operation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply Voltage and Power Consumption
4
. . . . . . . . . . . . . . . .
Charging voltage limits within current specifications fulfilled
4
5
Audio Specifications, electrical
. . . . . . . . . . . . . . . . . . . . . . . . .
HFS–12 Audio Specifications, acoustic
5
. . . . . . . . . . . . . . . . . .
6
HFM–8 Audio Specifications, acoustic
. . . . . . . . . . . . . . . . . . .
6
Audio signal levels
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Signals and Connections
6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
Block Diagram
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exploded View of HFU–2
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts list of ED2 (EDMS Issue )
Code: 0200948
8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
Original 11/97
Page 2
833125334.061.png
PAMS
HFU–2
Technical Documentation
Introduction
The HFU–2 is a handsfree unit for DCT3 compatible handportable
phones. It provides rapid charging for the phone, a possibility to use HF–
operation and connections to the data–card and handset unit. The HF
box can be connected directly to the Mobile holder MCC–1 via the exter-
nal cable.
Technical Summary
The HFU–2 has connections to car battery, car ignition sense, car radio
muting, antenna motor control, data–card, handset HSU–1, external
speaker and microphone. The unit has a System–connector that pro-
vides an interface to the Mobile holder MCC–1 via the external cable.
The unit consists of a rapid charger, HF–microphone– and speaker ampli-
fiers, interface to handset, – datacard and –phone, voltage regulators and
control circuit (microprocessor).
The HFU–2 is always connected to the car battery. To save the car bat-
tery, HFU–2 goes in to the sleep mode if the car is not running and/or the
phone is not connected.
Page 3
Original 11/97
833125334.063.png
PAMS
HFU–2
Technical Documentation
List of Modules
Name of module
Type code
Material
code
Notes
HF unit
HFU–2
0694049
Advanced handsfree unit
HF module
ED2
0200948
ED2 Advanced hadsfree module
Assembly parts
MHFU–2
0261602
Mechanical Parts
Operation
Phone not connected (sleep mode):
When the phone is not connected the current consumption of
the device has been minimized. The switching mode power
supply (SMPS) and audio circuits has been turned off. HFU–2
is only waiting a phone to be connected.
Phone connected (active mode):
When the phone is connected to the HFU–2 it goes into the ac-
tive mode. In the active mode the device provides charging
current to the phone. It also can provide hands free call option
using the external speaker and the external microphone or
micspeaker unit. If more private call wants to be made, the
phone itself can be used as a handset without losing the exter-
nal antenna connection or with handset (option).
The phone controls all functions of HFU–2. In the active mode
the HFU–2 sends all state transitions to phone via mbus.
HFU–2 also provides car radio mute function during call.
HFU–2 can control the mobile antenna motor if it is installed to
the car.
Supply Voltage and Power Consumption
Conn. / pin
Line Symbol
Minimum
Typical /
Nominal
Maximum
Unit / Notes
X300 / 6
GND
0
VDC
X300 / 1
VB
8.0
16
VDC (working)
X300 / 1
VB
10.8
13.5
16
VDC (spec. fulfill)
X300 / 1
VB
0.05
1
2
IDC/A (operating)
X300 / 1
VB
0.2
0.8
1
IDC/mA (sleep
mode)
Original 11/97
Page 4
833125334.064.png 833125334.001.png 833125334.002.png 833125334.003.png 833125334.004.png 833125334.005.png 833125334.006.png 833125334.007.png 833125334.008.png 833125334.009.png 833125334.010.png 833125334.011.png 833125334.012.png 833125334.013.png 833125334.014.png 833125334.015.png 833125334.016.png 833125334.017.png 833125334.018.png 833125334.019.png 833125334.020.png 833125334.021.png 833125334.022.png 833125334.023.png 833125334.024.png
 
PAMS
HFU–2
Technical Documentation
Charging voltage limits within current specifications fulfilled
Conn. / pin
Line Symbol
Minimum
Typical /
Nominal
Maximum
Unit / Notes
X200 / 7
GND
0
0
0.1
VDC
X200 / 2
+10VA
9.50
10.0
10.55
VDC
X200 / 2
+10VA
11
200
IDC / mA
Conn. / pin
Line Symbol
Minimum
Typical /
Nominal
Maximum
Unit / Notes
X100 /
5,6,11
GND
0
0
0.1
VDC
X100 / 8,9
V_IN
3
8.5
VDC
X100 / 12
VB
8
16
VDC / car battery
X100 / 12
VB
500
IDC / mA
Audio Specifications, electrical
Minimum
Typical /
Nominal
Maximum
Unit / Notes
Max speaker output power at
distortion=1%, 1 kHz sine
3.0
3.1
W / Rload = 8 ohm
HF–speaker amplifier gain
27
29
31
dB
PSRR, XEAR line
–60
–68
dB
CMRR, XEAR–SGND to
speaker
–50
–55
dB
HF–mic amplifier gain
27
30
33
dB
Mic level at XMIC–SGND,
(clipping level)
2000
2800
mVpp
Mic distortion at XMIC–
SGND, at Vo = 100 mVrms,
1 kHz
0.15
0.4
%
Noise voltage, HFMIC
5
uVrms
psofometric
PSRR, XMIC
–60
–67
dB
Crosstalk XEAR–SGND to
XMIC
– 55
– 45
dB / electrical, 1kHz
Page 5
Original 11/97
833125334.025.png 833125334.026.png 833125334.027.png 833125334.028.png 833125334.029.png 833125334.030.png 833125334.031.png 833125334.032.png 833125334.033.png 833125334.034.png 833125334.035.png 833125334.036.png 833125334.037.png 833125334.038.png 833125334.039.png 833125334.040.png 833125334.041.png 833125334.042.png 833125334.043.png 833125334.044.png 833125334.045.png 833125334.046.png 833125334.047.png 833125334.048.png 833125334.049.png 833125334.051.png 833125334.052.png 833125334.053.png 833125334.054.png 833125334.055.png 833125334.056.png 833125334.057.png 833125334.058.png 833125334.059.png 833125334.060.png 833125334.062.png
 

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin