"Harvard Apparatus introduces its NEW TR2 Chart Recorder. This thermal array Recorder is well suited for recording physiological signals. The rectilinear method of printing provides a precise trace of the input signal.

2 Independent Recording Channels
This Recorder has two independent channels that will accept an input signal from 40-2010 and 40-2020 Signal Conditioners or directly from other devices such as our Research Grade Blood Pressure, Isometric, and Isotonic Transducers. A simple push button control permits selection of direct or interface input. An LED indicator displays which type of input signal is being used.

2 Event Marker Channels
Each of the event marker channels may be independently set to an automatic timed marker, manual event, remote event, or no event. 14 different timed markers are available. Select from seconds or minutes. For a manual event, simply press the front panel push button. This Recorder will also accept a short circuit or 5 volt logic pulse applied to the rear event socket which will cause an event marking. If being used with a timed marker, the corresponding LED on the front panel of the Recorder will illuminate.

Clear, Easy to Read Traces
This Recorder provides clear, easy to read traces that are 50 mm wide. It uses simple fanfold thermal paper. When the Recorder runs out of paper the Paper LED will illuminate.

Variety of Chart Speeds
This Recorder provides three different speed ranges for the ultimate in versatility. Ranges available are mm/hours, mm/minute, and mm/seconds. 35 selectable speeds are provided. The minimum speed is 1 mm/hour. The maximum speed is 100 mm/sec.

Output Signal
In addition to providing a printed trace, the Recorder has 2 direct signal output sockets. These sockets permit the signal to be transferred to a data acquisition system or oscilloscope. The maximum output signal is ±1 volt.

Simple Controls and Displays
The clear 2 line alpha numeric display is easy to read and provides detailed information. Simple LED indicators are provided for Power, Run/Stop, Set, Paper, Marker Channel, and Direct/Indirect Input. With the display, these LEDs provide information at a glance. Other parameters are set by simple push button controls. Only the offset control is via simple knobs.
" Specifications: A/D Converter 8 bit
Channel Width 50 mm
Chart Paper (L x W) Metric 150 x 110 mm (fanfold)
Chart Speeds Minimum: 1 mm/hr
Maximum: 100 mm/sec
Chart Wander ±0.5 mm max. per 10 sec
Dimensions (H x W x D) English 8.9 x 12.3 x 13.8 in
Dimensions (H x W x D) Metric 225 x 313 x 350 mm
Direct Input Single ended BNC (rear panel), max. input ±2.5 V
Event Channels 2, selectable in any combination of time and/or event
Event Markers Front panel push button or remote via BNC: either short circuit or +ve 5 V logic pulse
Frequency Response Flat from DC to 40 Hz ±3 dB
Gain 1:1 or dependant on signal conditioner
Input Channels 2
Input Level ±1 V to provide full scale trace deflection max.
Input Types 2 analog inputs either direct or via plug in interface
Linearity Better than 1% full scale
Power 110 or 230 VAC, 50/60 Hz, 40 W max., 1 A 20 mm fuse
Print Head 104 mm direct thermal linear array
Resolution: Horizontal 32 dots/mm for chart speeds up to 25 mm/sec
16 dots/mm for charts speeds from >25 mm/sec to 50 mm/sec
8 dots/mm for charts speeds from >50 mm/sec to 100 mm/sec
Resolution: Vertical 8 dots/min
Rise Time <10 msec
Time Markers 14 user selectable settings; 1, 5, 10, 30, 45, or 60 sec/min
Weight (English) 17.5 lbs
Weight (Metric) 8.0 kg

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