3-1
SECTION 3
CIRCUIT ADJUSTMENTS
As BKM-41HD and BKM-42HD are optional boards of the HDM series (HDM-14E1U/14E5U/20E1U), they cannot be
operated alone. To measure and adjust them, attach to the HDM series monitor. Use an HDM series monitor which satisfies the
specifications.
The following describes the electrical adjustments required for the repair and maintenance of the BKM-41HD and BKM-
42HD.
BHD board (Analog YPBPR adjustment)
BHD board (HD SDI adjustment)
3-1. Preparation
1. Equipment Used
Name
Main Specifications
Equipment Name
Oscilloscope
Frequency : DC to 150 MHz
TEKTRONIX2445A or equivalent
Above 2 phenomena (ADD mode)
HD SDI signal generator
With 1080 standard (SMPTE274M standard)
Shibasoku : TG15B6 or equivalent
High vision signal generator
BTA S-001A standard
Leader Denshi : 440 or equivalent
Monitor
Sony HDM-20E1U or equivalent
2. Tools
Name
Parts Name
Remarks
Extension board/cable kit (Z board)
A-1394-806-A
75
Ω
terminater
3. Connections
• For analog component signal
• For HD SDI signal
Y/P
B
//P
R
100% color bar
G/B/R 100% color bar
High vision
signal generator
Extension board
(Z board)
BKM-41HD or
BKM-42HD
75
Ω
terminater x 3
Y/G terminal;
P
B
/B terminal
P
R
/R terminal
HD SDI
signal generator
100% color bar
HD SDI IN
terminal
BKM-41HD or
BKM-42HD
Extension board
(Z board)
BKM-10R
HDM-20E1U
BKM-10R
HDM-20E1U
