User Manual
Table 5.1 Setups Block
Setups data is sent from the host to the QT in a block of hex data. The block can only be loaded in Setups mode following two se quential 0x01 commands (page 12). All
devices this datasheet pertain to have the same block length. Refer also to Table 5.3, page 23 for further details, and all of Section 5.
101Block length
21--80..2551HCRCHost CRC byte1008
21
Lower limit of acceptable signal; below this value, device declares an error.
The low order byte should be sent first.
10024160..20482LSLLower signal Limit987
20Lower nibble = burst spacing1244BS = 0..111BSBurst spacing976
20Bit 6 = Mains sync, negative edge, 1 = enabled; default = 0 (off)0241MSYNC = 0, 11MSYNCMains Sync965
20
20
20
Bits 5, 4: = BL, via LUT, default = 48 (setting =2)
Bit 6 = AKS, 1 - enabled
Bit 7 = Scope sync, 1 = enabled
2
0
0
1
1
1
2
1
1
BL = 0, 1, 2, 3
AKS = 0, 1
SSYNC = 0, 1
24
BL
AKS
SSYNC
Burst Length
AKS
Scope Sync
724
19
Range is in 0.5 sec increments; 0 = infinite; default = 10s (operand = 20)
Range is { infinite, 0.5...127s }; 255 is illegal to use
20180..25424NRDNeg recal delay483
19
Lower nibble = Normal DI Limit, values same as operand (0 = disables key)
Upper nibble = Fast DI Limit, values same as operand (0 does not work)
2
5
1
1
4
4
NDIL = 0..15
FDIL = 0..15
24
NDIL
FDIL
Normal DI Limit
Fast DI Limit
242
18
18
Lower nibble = Neg Threshold - take operand and add 4 to get value
Upper nibble = Neg Drift comp - Via LUT
6
10
1
1
4
4
NTHR = 0..15
NDRIFT = 0..15
24
NTHR
NDRIFT
Neg thresh
Neg Drift Comp
01
Page
Description
Default
Value
Key
Scope
BitsValid rangeBytesSymbolParameterByte
Item
#
CRC Note: A CRC calculator for Windows is available free of charge from Quantum Research on request.
Table 5.2 Key Mapping
Some commands return bitfields related to keys. For example, command 0x07 (report all keys) returns 3 bytes containing flag bits, one per key, to indicate which keys are reporting
touches. The following table shows the byte and bit order of the keys. The table contains the key number reported in each bit.
The key number is related to the X and Y scan lines which address each particular key. Each byte in the return stream represents one set of keys along a Y line, ie up to 8 keys.
Thus, key 0 is at location X0,Y0 and key 19 is at location X3,Y2. .
Note: Byte 0 is returned first.
lQ
22 QT60248-AS R4.02/0405
1617181920212223
2
89101112131415
1
01234567
0
Byte
(Y line)
01234567
Bit
(X line)