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參數(shù)資料
| 型號： | SY01-SMC |
| 廠商： | Raltron Electronics Corporation |
| 英文描述： | SYNCHRONOUS EQUIPMENT SONET MINIMUM CLOCK |
| 中文描述： | 同步設(shè)備SONET的最小時鐘 |
| 文件頁數(shù)： | 4/6頁 |
| 文件大?。?/td> | 154K |
| 代理商： | SY01-SMC |
SYNCHRONOUS EQUIPMENT
SONET MINIMUM CLOCK - SY01-SMC
Two controls are available for the user to control the operation of the SY01-S4. The two external inputs CNT1 and
CNT2 provide this feature. Below, the truth table shows behavior of the SY01-S4 module according to the control
inputs states.
CNT2
CNT1
0
0
0
1
1
0
PIN DESCRIPTION
RALTRON ELECTRONICS CORP.
§
10651 N.W.19
th
St
§
Florida 33172
§
U.S.A.
Tel: 305 593-6033
§
Fax: 305-594-3973
§
e-mail: sales@raltron.com
§
Internet: http:/www.raltron.com
Control
MODE OF OPERATION
Free-run
Locked to REF1
Locked to REF2
Bottom View
Pin #
1
2
3
4
6
7
8
9
Name
HOLD-OVER
REF 1
REF 2
FREERUN
ALARM OUT
CNT 1
CNT 2
PLL UNLOCK
GND
+5V
OUT
OPT OUT
EX REF1
EX REF 2
Description
Holdover Signal -> the output is high when the unit is in holdover mode
Reference 1 Signal -> the unit is enslaved to the reference 1
Reference 2 Signal -> the unit is enslaved to the reference 2
Freerun Signal -> the unit is in the free run mode
Alarm signal
Control Input 1 -> the external input for selecting mode of the unit
Control Input 2 -> the external input for selecting mode of the unit
PLL Unlocked Signal -> the unit is unlocked
Ground
Positive Voltage Supply
Synchronized Output -> the primary output
Optional Second Output -> the secondary output, optional, user selectable
External Reference 1 Input -> the input from reference 1
External Reference 2 Input -> the input from reference 2
5,10,12,14,16
18
11
13
17
15
18
17
16
15
14
13
12
11
10
1
2
3
4
5
6
7
8
9
+5V
EX REF1
GND
EX REF 2
GND
OPT OUT
GND
OUT
GND
N/C
REF 1
REF2
FREERUN
GND
ALARM OUT
CNT 1
CNT 2
PLL UNLOCK
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