Intermec CK30

Chapter 4 — Theory of Operation
Scanner Interface
Scanners are interfaced through two scanner ports on the CK30 main
PCB:
• 22-pin vertical ZIF connector J2 supports the I2 and IT4000 2D
imagers and may later be used on the EL10 Micro-mirror laser. The
signal set is as defined by HHP for the IT4000 imager.
• 16-pin vertical ZIF connector J3 supports all the remaining scan engines
and a 10-pin Stewart connector for tethered scanner support. The signal
set supports traditional laser interface signals, plus SPI and new signals
defined for the EV10 and EL10 scanners.
Because of the wide variety of scanners supported by the CK30, the
interface signals are heavily reused. The next table shows how the various
scanners use the scanner interface signal set. Blank fields mean the scanner
does not use that signal.
Using the Scanner Interface Signal Set – Part 1
Signal Name
Source/
Destination 2D Imager usage DBP scanner usage
Tethered
undecoded scanner
usage (10-pin only)
SCAN_PWR_EN* U11 out
Enable scanner
power
0 = enable
1 = disable
Enable scanner power
0 = enable
1 = disable
Enable scanner power
0 = enable
1 = disable
ILLUM_LASEN_RTS FPGA_IO Enable illumination
PWM square wave
Laser enable
0 = enable
1 = disable
Laser enable
0 = enable
1 = disable
SCAN_FLASH_EN* U11 out Scan enable
0 = disable
1 = enable
Scan enable
0 = enable
1 = disable
Scan enable
0 = enable
1 = disable
SOS FPGA in VSYNC
0 between frames
1 = valid data
SOS (Start of Scan)
toggles at start of each
scan
SOS (Start of Scan)
toggles at start of each
scan
DBP (Video) FPGA in HSYNC
0 between rows
1 = valid row data
DBP (Video)
0 = black
1 = idle, white
DBP (Video)
0 = black
1 = idle, white
SPEED/RANGE/
GDRD
FPGA out Speed select.
0 = 200 scans/sec
(EV10)
0 = 500 scans/sec
(EL10)
1 = 36 scans/sec
(EV10)
1 = 65 scans/sec (EL10)
SE900 config bit 0
SE1200 aim beam
GoodRead
Intermec: active-low
Symbol: active-high
76 CK30 Handheld Computer Service Manual