Global Microwave Systems Inc. VMT-F2 Manuel D’Utilisation
100-M0169X1
11-15-11
16 of 24
www.cobham.com/gms
PIN
SIGNAL
NOTES
5
AUDIO GND
AUDIO GND
6
COMP INPUT 1
Composite Video Input. Must be
selected with GMS Control Software.
Also used for S-VIDEO Input.
selected with GMS Control Software.
Also used for S-VIDEO Input.
7
COMP INPUT 2
N/C. Only used for S-VIDEO Input.
Must be selected with GMS Control
Software.
Must be selected with GMS Control
Software.
8
GND
GND
9
AUDIO LEFT
Audio Left, W/ 2V Phantom Bias.
10
AUDIO RIGHT
Audio Right, W/ 2V Phantom Bias.
11
GND
GND
12
CHAIN CLK OUT*
N/C.
Chaining
used
in
Repeater/Multiplexing applications,
contact GMS for details
contact GMS for details
13
CHAIN DATA
OUT*
N/C.
Chaining
used
in
Repeater/Multiplexing applications,
contact GMS for details
contact GMS for details
14
GND
GND
15
RS232_DATA_Rx
N/C. RS232 for User Data, Rx
16
RS232_DATA_Tx
N/C. RS232 for User Data, Tx
17
RS232_CNTRL_Rx RS232 for PC CONTROL Software
18
RS232_CNTRL_Tx RS232 for PC CONTROL Software
19
2.8V uC
N/C. 2.8V Output from Unit
20
GND
GND
21
VBATT_IN
Input Power to Unit: 5.9-18VDC
Table 2 JST Connector (21 Pins)
Note:
Table 2 references Cable 780-C0449. GMS can build customized cables to
customer specifications to access functionality not included in our standard cable.
Customers can also choose to build their own cables. Contact GMS with any questions.
Customers can also choose to build their own cables. Contact GMS with any questions.
6.1.2.1 Phantom Bias for TIBBETTS Microphones
The VMT does not provide a traditional separate bias voltage for surveillance microphones.
Instead, we provide a 2V Microphone BIAS directly on the signal lines. This is called phantom
biasing of microphones and has been proven to work with TIBBETTS 151/251/351 series
microphones by GMS. See TIBBETTS technical application notes for Phantom powered 2-
wire connection for specific details, GMS standard breakout cable employs 2-Wire Option C.
This wiring is in accordance with section 4.9.2 of RFP: E007216R and Attachment A of RFP:
E007216R.
In addition, to note, single ended line level audio can also be used instead of microphones.
The user will want to lower the Audio Gain to “0dB” through the GMS control software when
Line level audio is input.
Instead, we provide a 2V Microphone BIAS directly on the signal lines. This is called phantom
biasing of microphones and has been proven to work with TIBBETTS 151/251/351 series
microphones by GMS. See TIBBETTS technical application notes for Phantom powered 2-
wire connection for specific details, GMS standard breakout cable employs 2-Wire Option C.
This wiring is in accordance with section 4.9.2 of RFP: E007216R and Attachment A of RFP:
E007216R.
In addition, to note, single ended line level audio can also be used instead of microphones.
The user will want to lower the Audio Gain to “0dB” through the GMS control software when
Line level audio is input.