Quick Reference Guide

SMR-650P Reader Specifications
Savi Mobile Reader SMR-650P Quick Reference Guide 9
SMR-650P Reader Specifications
Specification Description
Physical characteristics
Length: 2.5 inches (6.4 cm)
Width: 3.5 inches (8.9 cm)
Height: 1 inch (2.5 cm)
Weight: 4.8 ounces (136.08 grams)
Environment Operating temperature: –4°F to +120°F (–20°C to +50°C)
when operating from the internal battery;
+32°F to +104°F (0°C to +40°C) when operating while
being recharged
Humidity: 5 to 95% non-condensing at +122°F (+50°C)
RF receiver/transmitter Ultra High Frequency (UHF) receiver and transmitter
(downlink and uplink):
Frequency: 433.92 MHz
Range: UHF read/write (symmetrical) range of 200 feet (61
meters) line of site to SaviTag ST-654, SaviTag ST-655, and
SaviTag ST-410 tags
SaviTag range: 100 feet (30.48 meters) typical for SaviTag
ST-602, SaviTag ST-604, and SaviTag ST-645 tags
Modulation: Frequency shift keying, deviation +/- 35 KHz
Data rate: 27.8 Kps, 50% duty cycle
Air protocol: Savi EchoPoint Air Protocol 2.1 (two-way UHF
commands and seal extension commands)
Data coding: Manchester
Rx Signal Strength Indicator (RSSI): RSSI logic enables
SmartChain Mobile Manager to implement a search function
that can poll a tag within range to determine tag proximity
RF communication: Amber LED flashes to indicate receipt
of valid packet
LF transmitter for tag
commissioning
Low Frequency Transmitter (downlink):
Frequency: 123 KHz
Range: Up to 4 feet (1.22 meters)
Modulation: Amplitude shift keying (on-off)
Data rate: 1.6 Kps, 50% duty cycle
Air protocol: Savi EchoPoint Air Protocol 1.1
Data coding: Pulse Code Modulation