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參數(shù)資料
| 型號(hào)： | SY01-S3F |
| 廠商： | Raltron Electronics Corporation |
| 英文描述： | SYNCHRONOUS EQUIPMENT OCXO BASED STRATUM 3 CLOCK UNIT WITH A 2ND FREE-RUN CLOCK OUTPUT |
| 中文描述： | 基于同步設(shè)備恒溫晶振地層3時(shí)鐘單位，由二路自由運(yùn)行時(shí)鐘輸出 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大?。?/td> | 173K |
| 代理商： | SY01-S3F |
SYNCHRONOUS EQUIPMENT
OCXO BASED STRATUM 3 CLOCK UNIT WITH A 2
ND
FREE-RUN
CLOCK OUTPUT – SY01-S3F
the clock is mounted. The SY01-S3F uses an OCXO as an on-board oscillator but other types of oscillators are
available.
Locked to Ref.1
In this mode the output of the module is phase locked to input reference 1.
Locked to Ref.2
In this mode the output of the module is phase locked to input reference 2.
The REF1 or REF2 Modes are typically used when a slave clock source is synchronized to the network. In these
modes, the SY01-S3F provides timing signals, which are synchronized, to one of two references inputs (REF1 or
REF2). The input reference signals may have a variety of nominal frequencies, which is typically specified by the end
user. When the modes are selected the unit goes through a reference evaluation, and then a frequency acquisition,
and finally to phase locking.
Input References
The SY01-S3F module accepts two input references EX REF1 and EX REF2. End users can specify the frequencies
within a range of 8 kHz to 77.76 MHz. The input reference signals are HCMOS/TTL levels with timing characteristic in
according to Bellcore GR-1244-core 3.2.1.R3-1 or equivalent standards. Please note that the end user must specify
the two input frequencies at the time of order.
Output Signals
The SY0001D module provides two output signals OUT and OPT OUT. The first output (OUT) is synchronized and is
generated by the internal Stratum 3 OCXO oscillator and scaled by the output frequency converters. The second
output (OPT OUT) is not synchronized and comes from free-running +/-20PPM overall stability TCXO (SMC level). The
performance of the module significantly depends on the internal oscillators and special care was taken to define its
specifications. The frequency of the oscillator is specified according to the network application where the SY0001D will
be used.
The SY01 Operation mode
By changing the control inputs the user can change the state of the SY01 according to the state diagram. The
SY01 offers two ways to manage state machine:
J1 jumper
Open
Closed
The behavior of the Manual and Automatic controls are shown on the figures 2 and 3 with an explanation for each
transition. In the Automatic control the SY01 can be automatically switched to the reference (if available)
regardless of status of the control inputs. In Manual control the unit waits for control inputs to be changed. In both
modes the unit will go to the REFERENCE EVALUATION if the previously lost reference is required.
Control
Two controls are available for the user to control the operation of the SY01. The two external inputs CNT1 and CNT2
provide this feature. Below, the truth table shows behavior of the SY01 module according to the control inputs states.
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
State diagram control
Manual
Automatic
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SY01-S3T | SYNCHRONOUS EQUIPMENT TCXO BASED STRATUM 3 CLOCK UNIT |
| SY01-S3 | SYNCHRONOUS EQUIPMENT OCXO BASED STRATUM 3 CLOCK UNIT |
| SY01-SMC | SYNCHRONOUS EQUIPMENT SONET MINIMUM CLOCK |
| SY02-FEC | SYNCHRONOUS EQUIPMENT HIGH FREQUENCY CLOCK REGENERATOR |
| SY02-HIPL | SYNCHRONOUS EQUIPMENT HIGH IN/OUTPUT FREQUENCY CLOCK/SYNCHRONIZER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SY01-S3T | 制造商:RALTRON 制造商全稱:RALTRON 功能描述:SYNCHRONOUS EQUIPMENT TCXO BASED STRATUM 3 CLOCK UNIT |
| SY01-SMC | 制造商:RALTRON 制造商全稱:RALTRON 功能描述:SYNCHRONOUS EQUIPMENT SONET MINIMUM CLOCK |
| SY0206-R | 制造商:JAMECO VALUEPRO 功能描述:CASE,METAL,6.3 INCH X7.75 INCH X2.5 INCH , |
| SY0207-R | 制造商:JAMECO VALUEPRO 功能描述:CASE,METAL,7.5 INCH X9.8 INCH X3.2 INCH , |
| SY025M0047B2F-0511 | 制造商:Yageo Corporation 功能描述: |
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