
A-34 HS-21/HS-41X Handheld Reader User’s Manual
Serial Commands
42 Expect Acknowledgement From Host 0
0: Reader doesn’t wait for acknowl-
edge
1: Reader will retransmit data when
Host doesn’t acknowledge receipt
This setting is used in conjunction with
settings 1B and 42 to configure the
communication mode between stan-
dard “one-way” and “two-way” modes.
For example, USB “two-way” native:
1B: 5 (USB Native)
08: 2 (packet mode)
42: 1 (expect response)
Also see registers: 08, 1B
43 JPEG Picture Quality (percent) 32 (#50)
Valid Range: 0 to 64 (#100) Percent
0: Raw Image (No JPEG Compression)
1 To 100: JPEG Compression Quality
Percent
Also see registers: 36, AC, AD, AE, AF
45 Read Cycle Timeout 1F4 (#500) Valid Range: 0 to FFFF (#65535) ms
47 Maxicode Symbology 0
Binary Dip Switch
48 Codabar Checksum 0
Binary Dip Switch
Bit Controls Value
0
Codabar Checksum
Checking
0: Disabled
1: Enabled
1
Strip Checksum from
Output
0: Disabled
1: Enabled
Bit Controls Value
0
Maxicode Decoding,
Mode 0
0: Disabled
1: Enabled
1
Maxicode Decoding,
Mode 1
0: Disabled
1: Enabled
2
Maxicode Decoding,
Mode 2
0: Disabled
1: Enabled
3
Maxicode Decoding,
Mode 3
0: Disabled
1: Enabled
4
Maxicode Decoding,
Mode 4
0: Disabled
1: Enabled
5
Maxicode Decoding,
Mode 5
0: Disabled
1: Enabled
6
Maxicode Decoding,
Mode 6
0: Disabled
1: Enabled
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