Zebra DS8178 Product Reference Guide

8 - 8 DS8178 Digital Scanner Product Reference Guide
Encapsulation of RSM Commands/Responses over SSI
The SSI protocol allows the host to send a command that is variable in length up to 255 bytes. Although there is a
provision in the protocol to multi-packet commands from the host, the scan engine does not support this. The host
must fragment packets using the provisions in the RSM protocol.
Command Structure
The expected response in the positive case is SSI_MGMT_COMMAND which may be a multi-packet response.
For devices that do not support the SSI_MGMT_COMMAND, the response is the standard SSI_NAK.
Response Structure
Byte 7 6 5 4 3 2 1 0
0 Length (not including the checksum)
1 SSI_MGMT_COMMAND (0x80)
2 Message Source (4 - Host)
3 Reserved (0) Reserved (0) Reserved (0) Cont'd packet Retransmit
4 Payload data (see the following example)
...
Length -1
Length 2's complement checksum (MSB)
Length +1 2's complement checksum (LSB)
Byte 7 6 5 4 3 2 1 0
0 Length (not including the checksum)
1 SSI_MGMT_COMMAND (0x80)
2 Message Source (0 - Decoder)
3 Reserved (0) Reserved (0) Reserved (0) Cont'd packet Retransmit
4 Payload data (see the following example)
...
Length -1
Length 2's complement checksum (MSB)
Length +1 2's complement checksum (LSB)

Zebra DS8178 Specifications

General

Product color	Black
Housing material	-
International Protection (IP) code	IP42
Type	Handheld bar code reader
Wavelength	617 nm
Sensor type	Photo diode
Scanner type	1D/2D
Tilt reading angle	0 - 360 °
Pitch reading angle	0 - 60 °
Optical sensor resolution	1280 pixels
Storage temperature (T-T)	-40 - 70 °C
Operating temperature (T-T)	0 - 50 °C
Operating relative humidity (H-H)	5 - 95 %
PC connection	RS-232/USB
Wireless range	100 m
Bluetooth version	4.0
Standard interfaces	USB, RS-232, Bluetooth
Connectivity technology	Wired & Wireless
Battery life	83 h
Battery capacity	2500 mAh
Power source type	Battery

Weight and Dimensions

Depth	107 mm
Width	66 mm
Height	168 mm
Weight	235.3 g