| MV1000 Application Notes |  |
Driving Dage MTI-68DX Camera with MV-1000
Driving Dage MTI-68DX Camera:
The Dage MTI-68DX Camera requires the following signals.
Input Signals:
H. Drive: 15.734 KHz horizontal frequency, 4 Vp-p between 0V and -4V. 75 Ohm terminated.
V. Drive: 30 Hz, 4 Vp-p between 0V and -4V. 75 Ohm terminated.
Output Signals:
VIDEO 1: This is the composite video output from the Dage 68 camera, which is locked to the driving signals provided in A.
Modifications Required:
The H.D. and V.D. outputs of MV-1000 Timing Generator are TTL level signals between 0V to +5V. They can not used to directly drive 75 Ohm terminated loads. The Dage-68DX must be modified to have the 75 Ohm termination removed in order to work with the MV-1000 board. Please contact Dage MTI to make sure that your camera has been modified for this purpose. Usually, the TTL H.D. and V.D. are sent out DC coupled. In order to shift the TTL level to meet the negative going (0V to -4V) input requirement of the camera, the MV-1000 H.D+V.D output must be AC coupled. This can be done by changing jumpers on MV-1000 board, see Section 3-A for details.
Setup the MV-1000 with the Dage MTI-68DX Camera
This section describes the procedures necessary to setup the MV-1000 board to work with Dage MTI-68DX Camera. The procedures are divided into three groups, jumper setup, cable connection and camera configuration file setup.
Jumper Setup:
Base Board Jumpers -
The following jumpers are set as default, but you should recheck them.
 | JP9 must be OUT; |
| JP13 must be OUT; |
| JPD20 must be IN. |
The following jumpers need to be set different from default.
| JPD3 must be IN; |
| JPD5 must be IN; |
| JP10 must be OUT; |
| JP12 must be OUT; |
| JP17 must be IN. |
Cable Connections:
Using MuTech's standard VC-7 Cable, make the following connections:
| Gray Cable connecting to the H. Drive Input of the camera; |
| Black Cable connecting to the V. Drive Input of the camera; |
| Red Cable connecting to the Video 1 Output of the camera. |
Setup Camera Configuration File:
In this section, we describe the settings for KEY entries in the camera configuration file. MuTech provides a working configuration file named "dage68_s.ini". You can skip this section if you don't want to get into the details of the configuration file settings.
In [General Control] section
| Tim_Gen_Enable: must be 1, if you need to drive the camera; |
In [Ana. Video Selection] section
| Video_Channel: must be 0, since we used the RED BNC cable; |
In [Ana. Video Conditioning] section
| Filter_Cutoff: should be 10, for 20 MHz sampling clock rate; |
In [Sync/Trigger Selection] section
| External_Sync_Input: must be 1, when driving camera with H+V Sync; |
| External_CSync_Input: must be 0, we are using separate H+V Sync, not Composite Sync; |
| External_Clock: must be 1, when driving camera with H+V Sync; |
In [PLL Control] section
| Clock_Reference_Select: must be 3, using on board 14.3MHz crystal as the reference of the PLL; |
| Pixel_Clock_Freq: set to 19.486203 (float), this is the calculated pixel clock frequency to digitize a line of Dage 68 video into 1024 pixels; |
In [Grab Window Control] section
| H_Offset: suggested value 30, at the start of the horizontal active video; |
| V_Offset: suggested value 16, at the start of the vertical active video; |
| H_Max_Capture_Size: should be 1024; |
| V_Max_Capture_Size: should be 1008, since the camera has 1009 active lines; |
In [TimGenGen Control] section
| Camera_Pixel_Per_Line: must be set to 1238, this is set according to the Dage 68 horizontal timings and the digitizing clock frequency in [PLL_Control] section; |
| Camera_Line_Per_Frame: must be set to 1049, according to the Dage 68 vertical timing; |
| Camera_Drive_Width: suggested value 175, this gives about 9 micro-seconds pulse; |
| Camera_Drive_Height: suggested value 3, for V. drive signal of 3 lines; |
Testing the Setup:
If you followed the instructions in section 2 and 3, you should be able to make the camera work with the MV-1000 by running the camera test program as
C:>>camtest dage68_s.ini
Here, "dage68_s.ini" is the camera configuration file, the program "camtest.exe" is the distributed test software both by MuTech.
;!!!!! DOES NOT ALLOW EMPTY LINES BETWEEN ENTRIES IN EACH SECTION !!!!!!!!
; For Dage MTI-68 camera being driven by MV-1000 with HD + VD.
[Miscellaneous]
Version=2.0 ; Version of this camera configuration file
Camera_ID=DAGE-68DX
[General Control]
Flag_Digital_Cam=0 ; 1 = digital camera, 0 = analog camera
Flag_Line_Scan=0 ; 1 = Line scan camera, 0= Frame scan
Tim_Gen_Enable=1 ; 1 = Enable timing generator
Flag_Interlace=1 ; 1 = interlace video.
Data_Packing=1 ; 1 = One byte/pixel
; 2 = Two bytes/pixel (10, 12, 16 bit)
; 4 = Four bytes/pixel
[Ana. Video Selection]
Video_Channel=0 ; Video channel: 0 - 3 .
Flag_2Bit_Shiftdown=0 ; 1 = convert 10 bit data to 8 bit after A/D
; this has no effect on 8 bit A/D
; board.
[Ana. Video Conditioning]
Filter_Cutoff=10 ; Cutoff Frequency for the built-in Low Pass
; filter: 5 - 20.
Filter_Boost=0 ; High Frequency boost in dB, 0 is recommended.
AD_Convert_Top=0x66 ; Top reference voltage of analog-to-digitial
; conversion.
AD_Convert_Bottom=0x1f ; Bottom reference voltage of analog-to-digitial
; conversion.
Clamp_Level=0x3d ; Clamping Level, Range: 0 - FF.
Clamp_Control=1 ; 0 = No Clamp
; 1 = Clamp at back porch.
; 2 = Clamp at Sync tip
DC_Offset=0 ; DC offset: 0 - FF.
[Sync/Trigger Selection]
Sync_Channel=3 ; C. Sync channel: 0 -3.
External_Sync_Input=1 ; 1 = Separate Sync input used
External_CSync_Input=0 ; 1 = Separate C. Sync input used
; 0 = Separate H + V Sync input used
HSync_Polarity=0 ; Reserved. must be 0
VSync_Trigger_Polarity=0 ; 0 = Active Low on Black Cable (for V./ C.
; Sync. and Ext Trig).
; 1 = Active High on Black Cable (for Ext Trig).
External_Trigger=0 ; 1 = use external trigger.
External_Clock=1 ; 1 = use external clock.
Use_Module_Sync_Clock=0
[PLL Control]
H_Period=63.556000 ; Line Period in micro seconds.
Pixel_Per_Line=0x304 ; # of pixels / entire horizontal line.
Clock_Reference_Select=3 ; 0 = Stripped H. Sync.
; 1 = External H.Sync
; 2 = External P. Clock.
; 3 = 14.3 MHz.
Phase_Trimming=0x0 ; value use to trim the phase of the VCO clock.
Pixel_Clock_Freq=19.486203 ; Frequency of pixel clock in MHz.
Lead_Lag=0 ; 0 = Feedback lag reference
; 1 = Feedback lead reference
[Grab Window Control]
H_Offset=30 ; # of pixels from the front edge of the H. Sync
; to the start of the active video.
V_Offset=16 ; # of lines, from the front edge of the V. Sync
; to the start of the active video.
H_Max_Capture_Size=1024 ; Max. # of pixels to capture/line
V_Max_Capture_Size=1008 ; Max. # of lines to capture/frame
[Timing Generator Control]
Camera_CSync_Output=0 ; 0 = Driving with H. and V. Sync.
; 1 = Driving with C. Sync.
Camera_Drive_VPolarity=0 ; 0 = drive C./V. Sync active low.
Camera_Drive_HPolarity=0 ; 0 = drive H. Sync active low.
Camera_Master_Clock=0 ; 0 = PLL pixel clock, 1 = 2 x pixel clock.
Camera_Pixel_Per_Line=1238 ; # of pixel per line.
Camera_Drive_Width=175 ; H. Drive Width, (about 9.0 us).
Camera_Drive_Height=3 ; V. Drive Height, in number of lines.
Camera_Line_Per_Frame=1049 ; # of line in one frame.
Camera_Interlace=1 ; 1= drive an interlace camera.
Flag_EquSerr=0 ; 0 = Equalization and Serration disable.
Eq_Start=0x1 ; Equalization and Serration start.
Eq_End=0x13 ; Equalization and Serration end
Tim_Gen_Clock_D4=0 ; Use Only for Line Scan Camera
Drive_Through_Module=0
[Cables and Jumpers]
Flag_White_Cable=0 ; 0 = White Cable is not used.
; 1 = Single Ended video input.
; 2 = General control output.
Flag_MiniBNC_Cable=0 ; 0 = Mini BNC Cable is not used.
; 1 = Differential video input.
Flag_Video_AC_Couple=1 ; 0 = DC couple for input video
; 1 = AC couple for input video
Flag_Sync_DC_Couple=1 ; 0 = DC couple for Sync. signal
; 1 = AC couple for Sync. signal
Flag_Sync_Termination=0 ; 1 = use 75 Ohms termination for the signal
FST_EXP_Pola_Jp=0
MuTech Corp. July 1996
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