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Jewell Instruments
Jewell Instruments MD908 IRIS Tilt Switch Controller
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MD908 IRIS: ±10/25/50°; 8 TTL outs; RS-232/422; NMEA. RFQ gain.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Measuring range
High-Gain ±10°; Standard ±25°; Wide-Angle ±50°
Accuracy
Nonlinearity max 1% FRO; nonrepeatability 0.01° / 0.01° / 0.02° (HG/Std/WA)
Output
RS232 or RS422 (RS485 full duplex); 8 TTL CMOS control outputs 0–5 VDC
Supply
7–28 VDC @ ~30 mA; 250 mV ripple max; reverse-polarity protected
Protection
IP65; 100% humidity rated board assembly
Ambient temperature
Operating and storage −40 to +85 °C
Fits programmable tilt switching where you need a Jewell MD908 IRIS—biaxial electrolytic tilt switch/controller with ±10°/±25°/±50° ranges, eight 0–5 V TTL/CMOS control outputs, and RS-232 or RS-422 serial formats including NMEA XDR.
Key advantages
- Ranges — HG ±10°; Std ±25°; WA ±50°
- Resolution — 0.002° / 0.004° / 0.01°
- Switch outs — 8 TTL/CMOS 0–5 V; 20 mA/ch (100 mA total)
- Serial — RS-232 or RS-422 (RS-485 FD); NMEA/Trimble/Ashtech/Simple
- Power — 7–28 VDC; −40…+85 °C; compact ~67×67×25 mm
Typical applications
- Platform tip-over prevention.
- OEM pitch/roll control.
- Programmable tilt thresholds.
Selection guide
- Gain version
- RS-232 vs RS-422
- Threshold programming
Common mistakes
- Exceeding 100 mA across control outs.
- Wrong baud/format vs host.
- Ignoring tare/autozero setup.
When to RFQ / what to tell us
- Gain, serial.
- Quantity, ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 39642 |
| Brand | Jewell Instruments |
| Model | MD908 IRIS |
| Product type | Tilt Switch Controller |
| Type | Biaxial tilt switch/controller with electrolytic sensor (MD908 IRIS) |
| Ranges | HG ±10°; Std ±25°; WA ±50° |
| Resolution | 0.002° / 0.004° / 0.01° (HG/Std/WA) |
| Outputs | 8 TTL/CMOS 0–5 V control outs; RS-232 or RS-422 (RS-485 FD) |
| Formats | NMEA XDR, Trimble TCM, BAE, Ashtech, Simple |
| Power | 7–28 VDC; −40…+85 °C; ~67×67×25 mm |
Documents
FAQ
Q: Control outputs? A: Eight 0–5 V TTL/CMOS channels.
Q: Serial? A: RS-232 or RS-422 (RS-485 full duplex).
Q: What should I send for a quote? A: Gain/serial, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Measuring range | High-Gain ±10°; Standard ±25°; Wide-Angle ±50° |
| Accuracy | Nonlinearity max 1% FRO; nonrepeatability 0.01° / 0.01° / 0.02° (HG/Std/WA) |
| Output | RS232 or RS422 (RS485 full duplex); 8 TTL CMOS control outputs 0–5 VDC |
| Supply | 7–28 VDC @ ~30 mA; 250 mV ripple max; reverse-polarity protected |
| Protection | IP65; 100% humidity rated board assembly |
| Ambient temperature | Operating and storage −40 to +85 °C |
| Approvals | IP65; RoHS ordering options |
| Sensor type | Dual-axis electrolytic tilt switch/controller (MD908 IRIS) |
| Resolution | 0.002° / 0.004° / 0.01° (HG/Std/WA) |
| Tilt Switch Controls | 8 TTL outputs; 5 user-programmable thresholds (+X/−X/+Y/−Y/any); 20 mA/channel (100 mA total max) |
| Baud Rate | 9600 (default) to 230400 |
| Time Constant | 0.15 s; natural frequency 7 Hz |
| Weight | 31 g (1.1 oz) |
| Cable | Three 60 cm (2 ft) cables: Signal (H1), Power (H2), Control Outputs (H3) |