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参数资料
| 型号： | SSCUB-200/A |
| 厂商： | Red Lion Controls |
| 文件页数： | 3/8页 |
| 文件大小： | 0K |
| 描述： | MODULE DIS COUNTER SSCUB200 DATA |
| 标准包装： | 1 |
| 系列： | SUPER SUB-CUB |
| 计数速率： | 400kHz |
| 数字/字母数： | 6 |
| 输入类型： | 电压 |
| 电源电压： | 2.5 V ~ 6.0 V |
| 显示器类型： | LCD 无背光 |
| 其它名称： | RLC200A SSCUB2 SSCUB200 |
MODES OF OPERATION
BI-DIRECTIONAL COUNTING MODES
For Bi-Directional counting, input “A” serves as the count input, while input
“B” serves as the direction control input. In the Times 1 Mode when “B” is at
a low level, a negative going transition at “A” will cause the counter to count
in the positive direction. When “B” is at a high level, a negative going
transition at “A” will cause the counter to count in the negative direction.
TABLE I illustrates the level settings of the Mode Select Inputs for the various
modes of Bi-Directional counting. The Times 2 Mode works like Times 1 Mode
except the counter changes on a positive going transition at “A” , as well as on
a negative going transition at “A” . There are also two Divide-By Modes which
prescale the display by 10 or by 100. This results in the capability of displaying
the 7th and 8th digit of the internal counter. (Along with Times 2, this gives an
ANTI-COINCIDENCE SUMMING MODES
For Anti-Coincidence Summing, input “A” and input “B” both serve as Add
Inputs. These modes effectively separate count pulses which may simultaneously
occur at the two inputs. The unit then processes the count pulses into a string of
time-separated pulses so that the internal counter will not lose any counts. Both
inputs respond to the negative going transition in the Times 1 Mode.
TABLE III illustrates the level settings of the Mode Select Inputs for the
various modes of Anti-Coincidence Summing.
Note: The maximum count rate for all Anti-Coincidence counting modes is 20
KHz.
TABLE III
equivalent -5 and -50 display.)
MODE
MS6
MS5
MS4
MS3
MS2
MS1
1 1 0 0 1 0
1 1 0 1 0 1
0
0
TABLE I
MODE MS6 MS5 MS4 MS3 MS2 MS1
Times 1 1 1 0 0 0 0
Times 2 1 1 0 1 1 0
(x2, -10)
Divide By 5 *
(x1, -10)
Divide By 10
Times 1 0
(x1, -10)
Divide By 10
(x1, -100)
Divide By 100
1 = V DD = High Level
0 = V SS = Low Level
1
1
1
0
0
0
0
1
1
0
0
0
0
1
0
1 1 0 0 1 1
1 1 0 1 0 0
(x2, -100)
Divide By 50 *
(x1, -100)
Divide By 100
* These factors include both a resolution multiplier and a decade prescaler.
1 = V DD = High Level
0 = V SS = Low Level
QUADRATURE COUNTING MODES
For Quadrature Times 1 counting, input “A” serves as the count input while
input “B” serves as the quadrature input. (Input “B” is a pulse train shifted 90 o
away from “A”.) The counter will count in a positive going direction when “A”
ANTI-COINCIDENCE ADD/SUBTRACT MODES
For Anti-Coincidence Add/Subtract counting, input “A” serves as the Add
Input and “B” serves as the Subtract Input. This mode is identical to the Anti-
Coincidence Summing Mode with the exception that all counts appearing at
“B” will now subtract from the total counts. Both inputs respond to the negative
going transition in the Times 1 Mode.
TABLE IV illustrates the level settings of the Mode Select Inputs for the
various modes for Anti-Coincidence Add/Subtract counting.
Note: The maximum count rate for all Anti-Coincidence counting modes is 20
KHz.
0
0
is a negative going signal and “B” is low. The counter will count in a negative
going direction when “A” is a positive going signal and “B” is low. All
transitions on “A” are ignored when “B” is high. These logic rules provide the
basis for anti-jitter operation which will prevent false counts from occurring,
due to back-lash, vibration, chatter, etc.
TABLE II illustrates the level settings of the mode select inputs for the
various modes of quadrature counting. The Times 2 Quadrature Mode works
the same as Times 1 when “B” is low. But when “B” is high, counts are no
longer ignored at “A” . Instead, the logic rules for “A” are complemented,
MODE MS6
Times 1 0
(x1, -10)
Divide By 10
(x1, -100)
Divide By 100
1 = V DD = High Level
0 = V SS = Low Level
TABLE IV
MS5 MS4
0 0
0 0
0 0
MS3
0
1
1
MS2
0
0
0
MS1
0
1
0
allowing both edges of “A” to be counted. This gives an effective doubling of
1 1 1 1 0 1
TABLE V
shown, have leading zero blanking.
As can be seen from the Table, the
zero immediately to the left of the
turned off.
display count but more importantly, doubles the resolution of the input. The
Times 4 Mode extends this even further. Both “A” and “B” serve as count or
quadrature input. In one instance, “A” will be the count input and “B” will be
the quadrature input. In another instance, “B” will be the count input and “A”
will be the quadrature input. This will result in counts and resolution four (4)
times greater than in the Times 1 Mode. For counting rates on these modes,
refer to the specification sheet (X2, X4, -10, -100 give an equivalent divide-by
2.5, 5, 25, and 50) .
TABLE II
MODE MS6 MS5 MS4 MS3 MS2 MS1
Times 1 1 1 0 1 1 1
Times 2 1 1 1 0 0 0
Times 4 1 1 1 0 0 1
(x4, -10)
Divide By 2.5 *
DECIMAL POINT AND LEADING ZERO BLANKING
SELECTION
TABLE V illustrates the level
settings required for decimal point MODE D.P.3 D.P.2 D.P.1
selections, except for the last one Test Mode * 0 0 0
0 0 0 1
0.0 0 1 0
0.00 0 1 1
0.000 1 0 0
decimal point is turned on, while 0.0000 1 0 1
digits to the left of that zero are 0.00000 1 1 0
000000 1 1 1
* Test Mode is intended for
factory use only.
(x2, -10)
Divide By 5
(x1, -10)
Divide By 10 *
(x4, -100)
Divide By 25
(x2, -100)
Divide By 50 *
(x1, -100)
Divide By 100 *
1 1 1 0 1 0
1 1 1 1 1 0
1 1 1 1 0 0
1 1 1 0 1 1
1 1 1 1 1 1
* These factors include both a resolution multiplier and a decade prescaler.
1 = V DD = High Level
0 = V SS = Low Level
3
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