676 GIF or Enfina™ Compatible
TV Camera for TEM

The 676 is an intensified TV system compatible with Gatan ENFINA™ 2D spectrometer or GIF system. It converts TEM images into electronically-formatted TV images suitable for displaying on standard TV monitors.

The 676 TV system consists of a yttrium-aluminum-garnet (YAG) scintillator screen that is fiber-optically coupled to a reducing image intensifier, whose output is further fiber optically coupled to a low-noise TV-rate CCD. The image intensifier has a 61% reduction of the image size to better match the resolving powers of the YAG screen and the CCD sensor.

The 676 TV system is designed to replace the 622 camera when a Gatan spectrometer or imaging filter is installed on the microscope. This TV system is functionally similar to the 622 camera (both are intensified), however the physical size had been reduced due to the limited space available.

Specifications

	Dimension and Utilities
	Electron voltage	Up to 400kV
	Resolution	33 line pairs per mm (max) measured on scintillator screen.
	Operating range	2 x 10-12 to 4 x 10-9 A/cm2, measured on scintillator screen.
	Magnification	Image on 9" monitor is approximately 6x larger than the image on the photographic plate of the TEM (exact value depends on the model of TEM).
	Scintillator	YAG single crystal, active area 6.6 mm vertical x 8.8 mm horizontal.
	Sensor	Solid state charge-coupled device (CCD).
	Scanning format	EIA format (RS 170): 525 lines per frame, 1:2 interlaced, 30 frames per second. CCIR format 625 lines per frame, 1:2 interlaced, 25 frames per second.
	Number of pixels	EIA format: 493 vertical x 768 horizontal. CCIR format: 581 vertical x 756 horizontal.
	Output signals	Analog video: composite, white positive, AC coupled, 75 ohms, BNC connectors.
	Power requirements	10W at 100V, 110V, 200V or 220V and at 50/60Hz.