The Astro-Med Dash 18 field recorder is a compact, 18-channel data acquisition recorder ("chart recorder") ideal for medical research applications. The observed waveform data is captured and shown in real-time on a 15.4" color display and stored in memory on an 18 GB hard-drive and optional array recorder.
The Dash 18 is extremely versatile with the capability to capture video and audio data internally. Universal inputs let you connect nearly any signal without using external signal conditioning. The Dash 18 can record a wide range of voltages, temperature, DC Bridge and frequency inputs- all independently set up and enhanced with customizable control buttons.
| Color Display |
| Type |
Active matrix color LCD (TFT) with 15.4" viewing area |
| Resolution |
1280 x 1024 |
| Touchscreen |
Full-screen, resistive |
| Functions |
User interface with touch-based icons and menus; Real-time waveform monitoring; Review previous waveform records while recording; Overlay numeric values in Engineering Units |
| Real-time Signal Processing |
| Filters |
Low Pass Stops: 10 Hz to 10,000 Hz; High Pass Starts: 0.1 Hz to 100 Hz; Notch: 50 or 60 Hz center |
| RMS |
Time constant selectable from 0.02 to 2 seconds |
| Frequency to Voltage |
5 Hz to 20 kHz, ±0.05% of measurement +0.1 Hz |
| Cross-Channel |
Sum, Difference, Ratio, Product (Power) |
| Real-time Signal Testing |
| Basic |
All active signals monitored simultaneously |
| Test Types |
Tests include window, slope/level, slew and event pattern |
| Outputs |
Result available for alarms, trigger, abort and external TTL |
| Data Capture |
| Recording Method |
Internal 18 Gbyte hard drive |
| Maximum Rate |
100,000 samples/second per channel (all channels) |
| Minimum Rate |
1 sample/minute |
| Dual Rate |
Second slower rate available when main rate is 50 kHz or less |
| Total Capacity |
Over 4 billion samples |
| Maximum Record |
2 billion samples |
| Header |
Information on units, range, sample rates, etc. saved with data |
| Events |
All standard event inputs captured with waveforms |
| Trigger Point Lock |
Amounts of pre- and post-trigger is user adjustable |
| Auto Re-arm |
Allows automatic stacking of captures |
| Auto Playback |
Yes |
| External Sample Rate |
TTL sample clock up to 40,000 Hz |
| Signal Conditioner Specifications (General) |
| Channels per Module |
6 |
| Isolation |
250 Vrms (iso-common to chassis and other iso-commons) |
| Bandwidth |
12 kHz (-3 dB) |
| Input Coupling |
DC |
| Zero Suppression |
Yes |
| User Engineering Units |
Yes |
| Calibration |
Semi-automated to external reference |
| Single-ended Voltage Input |
| Connector |
Guarded banana jack |
| Maximum Rated Input |
±250 Vrms |
| Maximum Transient Input |
±400 volts |
| Specified Ranges |
40 to 400 VFS; 4 to 40 VFS; 0.4 to 4 VFS |
| Accuracy (25° C) |
±0.5% of full scale |
| Mininum Input Impedance |
1 Megohm |
| Differential Voltage Measurements (use for bridge measurements) |
| Input Type |
Isolated, differential |
| Connector |
Screw terminal header |
| Absolute Maximum Input |
±40 volts differential |
| Measuring Ranges |
200 to 1600 mVFS; 50 to 500 mVFS; 5 to 50 mVFS4 to 4 VFS |
| Minimum Input Impedance |
200k ohm |
| CMR at 60 Hz |
>60 dB |
| Auto Balance |
Yes, limited to maximum span |
| Thermocouple Measurements |
| Input Type |
Isolated, differential with screw terminal header connector |
| Absolute Maximum Input |
±40 volts |
| Specified Range |
Type J: 0 to 760° C/Type K: 0 to 1370° C/Type T: -160 to 400° C/Type E: -100 to 1000° C/Type N: 0 to 1300° C |
| Accuracy (25° C) |
0.5% of measurement +2° C |
| Bandwidth |
10 Hz (-3 dB) |
| Intrinsic Noise |
0.5° C (1 Hz filter) |
| Linearization |
NIST polynomial |
| Units |
°C or °F |
| Frequency Measurements |
| Method |
Zero-crossing, channels 1, 7 and 13 only |
| Signal Amplitude |
Peak-to-peak minimum is 20% of attenuator |
| Hysteresis |
Yes |
| Power |
| Input Voltage Range |
102 to 264 VAC |
| Frequency Range |
47 Hz to 63 Hz |
| Power Consumption |
300 watts maximum |
| Compliance |
| Safety |
EN 61010-1 EMC FCC Class A, EN 61326 |
| Power Harmonics |
IEC1000-3-2 |
