Philips M2540 TR Boards

M2540-92000-01 A M2540 Ultrasound System Field Service Manual Page 40

Theory of Operation: TR Boards

The VCR option includes several cards inside the PC and an adapter that connects to the SVGA

output of the PC’s graphics adapter board. See Figure4-1 on page 48 for a detailed

representation of how the VCR option’s components function in the ultrasound system.

The following cards are part of the VCR option, and reside in the PC’s PCI slots:

•A sound card that receives audio from the VCR, and supplies sound to the VCR

•A video capture board that receives S-Video signals from the VCR

•An SVGA-to-S-Video card that converts the SVGA signal from the graphics adapter board (in

the AGP slot) to S-Video for the VCR

•An SVGA adapter that connects the graphics adapter board to the SVGA-to-TV video card

and to the monitor

See “VCR Option Parts” on page 198 for a list of all the components of the VCR option.

The PC’s drive bays accept the following components:

•The Physio module that provides ECG monitoring capability. The drive bay’s power connec-

tor powers the module, but the module does not use the drive bay’s data port. The module

communicates with the ultrasound system through a USB cable to the PC motherboard. See

“Physio Module Option” on page 43, and Figure 4-3 on page 51 for detailed information on

the Physio module.

•A magneto-optical disk (MOD) drive that allows archiving of images, studies, and reports on

removable disks. The MOD uses the drive bay’s data and power ports.

TR Boards

The M2540A’s e-box contains two transmit-and-receive (TR) boards. Each has a connector that

plugs into the motherboard and another connector that passes through the motherboard and