Applied Biosystems 7900HT User Manual page 29

Interchangeable
Thermal Cycler
Blocks
Optics System
Applied Biosystems 7900HT Fast Real-Time PCR System and SDS Enterprise Database User Guide
The 7900HT instrument features a Peltier-based, interchangeable sample block
module based on the technology established in the GeneAmp
thermal cycler. The sample block module houses an internal Peltier heating/cooling
unit (Figure 1-4). The sample block module is made of aluminum to provide an
optimal thermal transfer rate between the block and the optical plate or the
TaqMan ® Low Density Array.
PHYSICAL INJURY HAZARD. Hot Surface. Use care when
working around this area to avoid being burned by hot components.
Block inside
instrument
Figure 1-4 Components of the Interchangeable Thermal Cycler Block
The interchangeable sample block module provides:
• Wide temperature range: 4–99.9 °C
• Accuracy: ±0.25 °C from 35–99.9 °C
• Heat/cool rate: 1.5 °C per second
• Temperature uniformity: ±0.5 °C (measured 30 sec after the clock starts)
• Long-term stability and high reliability
• Support for multiple consumable formats (see
• Several different modes of operation including 9600 mode and programmable
temperature ramps (see
• Reduced instrument downtime by allowing immediate replacement of the block
(see page 7-6)
• Easy access to the sample block for troubleshooting and maintenance
(see page 7-6)
Do not remove the cover to the 7900HT instrument. Only a qualified
IMPORTANT!
Applied Biosystems service engineer may repair or adjust the internal components.
Connection to the instrument
(Do Not Touch)
Warning
Sample block
(Do Not Touch) (Do Not Touch)
Top view Bottom view
page
page 3-21)
DRAFT
September 1, 2004 11:38 am, CH_Overview.fm
7900HT Instrument
® PCR System 9700
Circuitry
(Do Not Touch)
Heat sinks
1-9)
1-5