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Silimin Power Automation Co., Ltd.

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Person in charge:Nelson Wu
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Home > Product > GNSS Referenced Clock > Precision Frequency Standard
Precision Frequency Standard

PRODUCT OVERVIEW
SILIMIN SNTF series offer GPS synchronized programmable 0-50MHz frequency, TOD Serial Port message, PPS, AND Relay/Network Alarm in a 19'' standard 1U/2U/4U Rackmounting chassis. With built in TCXO Oscillator, SNTF transfer 2 to 4 high-accuracy frequency via BNC connectors. Low Phase Noise (LPN) Outputs can be optional.
 
It is equipment providing precision time and frequency standard for single-frequency network adapter, up-converter, transmitter, multiplexer, precision bias exciter, etc. in the field of digital television broadcasting, Laboratories, Electronic R&D, E-Teaching, Scientific Research, etc
 
◇  Sine Wave and Square wave programmable and 0~50M Hz settable
◇  Frequency accuracy holdover ±1E-7(1 day average).
◇  PPS timing output accurate to <50 nanoseconds RMS to UTC(USNO).
◇  TOD Serial Port message and Relay or Network Alarm available
◇  Time keeping: via internal TCXO / OCXO or Rubidium clocks
◇  GPS / Beidou / GLONASS / GALILEO / PTP / NTP / CDMA / IRIG-B
◇  6-buttons keypad, LCD display and 7-status LED in front panel
◇  Silimin EasyTime SET2000 software for monitoring and configuration                         
 

MODEL OVERVIEW
1U Rackmounting Chassis with 0~50M Hz output, TOD Serial Port output and Pulse per second output, 1x wide range AC/DC power supply:
SNTF1000/10001/1002/1003/1004/1005
 
2U Rackmounting Chassis with 0~50M Hz output, TOD Serial Port output and Pulse per second output, 1x wide range AC/DC power supply:
SNTF1006/1007/1008/1009
 
2U Rackmounting Chassis with 0~50M Hz output, TOD Serial Port output and Pulse per second output, 2x Relay Alarm and 1x Network Alarm, 2x wide range AC/DC power supply:
SNTF1010 and SNTF1011
 

SNTF STANDARD INPUTS AND OUTPUTS
Product Mode GPS+Beidou TCXO 0~50M Hz Programmable Serial Port Pulse Alarm AC/DC input Chassis
 TOD PPS Relay Network
Time & Frequency SNTF1000 1 1 2 1 1 - - 1 1U Rack
SNTF1001 1 1 4 - - - -
SNTF1002 1 1 4 2 2 - -
SNTF1003 1 1 8 - - - -
SNTF1004 1 1 6 3 3 - -
SNTF1005 1 1 12 - - - -
SNTF1006 1 1 8 4 4 - - 1 2U Rack
SNTF1007 1 1 16 - - - -
SNTF1008 1 1 10 5 5 - -
SNTF1009 1 1 20 - - - -
SNTF1010 1 1 24 - - 2 1 2 4U Rack
SNTF1011 1 1 40 - - 2 1
 
Note:
1. All models above comes with a standard Signal Receiver+ Antenna kit with 30M cable;
2. For Pulse output, PPS / PPM / PPH mode, and TTL / Differencial / Idle contact are all available for you;
3. For IRIG-B, we have port and fiber, and you can choose TTL / Differencial / Idle contact;
4. Connectors: 
    BNC:  For GPS receiving / Frequency output
    Plugable screw terminal block (2x6-pole or 2x4-pole):  For Pulse / IRIG-B / Serial port message
    RJ45 port:  NTP output and Network alarm
    Fiber connector types : SC / ST / FC
5. OCXO and Rubidium optional for all SNTF models (Standard built in oscillator is TCXO)
6. 19’’ 1U/2U/4U Rack mountable chassis optional for SNTF
7. please refere to Selection Guide for further information.

GNSS RECEIVER
SNTS series is coming with GPS+BD 2 in 1 Receiver, and IRIG-B input as a redundany or used to extend a slave clock 
GPS / Beidou/ GlONASS/ GALILEO references are all optional

GPS Type: 12 channels, independent tracking, 1575.42MHz ( L1), C/A Code; 
GPS Acquisition Time:  Warm Start< 2mints, Cold start < 20mints

Beidou Type: 6 channels,independent tracking,(1561.1 MHz), B1
Beidou Acquisition Time:  Warm Start< 2mints, Cold start < 20mints
 

ACCURACY
Accuracy to UTC, locked to GPS ( 1PPS): 50ns
Holdover ( Free run):50 μs/ day (When with TCXO)
Holdover ( Free run):12s/ year (When with TCXO)
 
Output Signals: 10MHz (Sine Wave and Square wave programmable and 0~50M Hz settable
Output range: 12dBm±1dB
GPS Locked Accuracy: ±1E-11 (24hour average)
Free run 1 day:  ±1E-7 (Temperature changes not over 5℃)
Free run 1 year: ±1E-6 (Temperature changes not over 5℃)
 

SHORT STABILITY (GPS locked)
1 second: 2E-9
10 second: 1E-9
100 second: 3E-10


PHASE NOISE ( When with TCXO)
1Hz-60dBc                                      
10Hz-90dBc                               
100Hz-110dBc                              
1KHz-135dBc                             
10KHz-140dBc


ENVIROMENTAL CONDITIONS
Working temperature: -20℃~+60℃; Humidity:5%-90% (No Condensation)
Storage temperature: -40℃~+85℃; Humidity:5%-95% (No Condensation)
 

COMPIANCE, COMPATABILITY & CERTIFICATES
Anti-Interference design can meet the following standards:
GB/T13729-2002, GB/T14598.9-2002, GB/T14598.10-1996, GB/T14598.13-1998, GB/T14598.14-1998;
IEC60255-22-6:2001, IEC60255-22-7:2003
Compatability:
GB/T17626-1998, GB/T15153.1-1998, Ⅲ Level
Isolation protection
Electromagnetic isolation: Ethernet port 1.5kV.
Surge protection: Each axle out line 600w.
EMC
Compliant with EMC standards of the power system.
Certificates:
CE / RoHS / FCC / ISO9001 / 3C
Warranty: SILIMIN products come with a standard 3 year factory warranty
 

MANAGMENT METHODS
1. Front panel:
The front panel of SNTM integrates the familiar LCD display, and the keypad with 4 directional and 2 function buttons. This allows for a simple and fast on-site configuration of the main parameters.
2. Sofewares:
Hundreds of configuration options for the SNTM input and output, Alarm can be set by using SILIMIN’s powerful SET software.
STM Software: Compatible with SILIMIN M1 Module to ultized to configurate the detailed parameters of all other functional modules.
SET Software: Installed in PC for time managment of synchronization.


HOW TO BUY?
1. Please choose from our existed models for SNTF family;
 
2. Chassis CPU kits + Modules
Firstly define the Chassis size by confirming how many function modules you need, you will get 1 CPU Chassis Kit, then add additional modules into it.
Please refer to "Selection Guide” for detailed information about CPU Chassis kits and modules. 
1U/2U/4U Chassis includes:
1x front panel ( 1xLCD display + 1xKeypad + 7 status LED)
1x CPU board with slots ( 1U with 5 slots, 2U with 9 slots and 4U with 18 slots)
1x Satellite signal receiver module with built in Oscillator ( Default receiver module is G10)
If any needs to provide higher precision, please refer to “ Oscillator options” for parameters and accuracy for TCXO/OCXO/ Rubidium.
 
3. Please send a enquiry to our sales or engineer.

SILIMIN GPS Time & Frequency system is a truly complete Modular equipment which allows to customize infinite number of combinations of input and output modules to meet almost any synchronization task.
Expansion slots on CPU board can be ordered extra anytime to expand the system when necessary.

There are 1U/2U/4U rack chassis kits, 15 options for GNSS receiver modules, 3 types of time-keeping osscilator, 7 kinds of Output Modules Optional: IRIG-B / Pulse / Serial Ports / DCF77 / Frequency / Network/ Alarm
M1 management module is also availabe for parameter configuration, monitoring and managment. 

We have 3 power modules offering different outputs such as 5V/ 12V/ -12V/ 24V outputs, and PA2/PA3 are dual AC input as an hot-swappable redunancy.
 

MODULE OPTIONS FOR SNTF

  1U CPU  5 Slots: Up to 1 Input modules, 3 Output modules, 1 Power Modules
  2U CPU  9 Slots: Up to 3 Input modules, 4 or 5 Output modules, 2 or 1 Power Modules
  4U CPU  18 Slots: Up to 3 Input modules, 13 Output modules, 2 Power Modules
 
Each standard CPU Chassis kit ( either 1U or 2U/4U) includes:
1 CPU Module (with slots for other functional modules);
1 Front panel(1x LCD display, 1x Keypad with 6 buttons, 7x Status LED)
1 Satellite Signal Receiving Module (G10 Module default);
1 Power Module


Reference Signal Receiving Module Options for SNTF
Each following module needs 1 slot:
 G1 Series:
 Satellite Input(GNSS)
 G10 Input Module  1* GPS+Bedou Input(2 in 1); 1*IRIG-B (DC RS422) Input; need 1 slot
 G11 Input Module  2* GPS+Beidou+Glonass Input (3 in 1), need 1 slot
 G12 Input Module  1* GPS Input, need 1 slot
 G13 Input Module  1* Beidou Input, need 1 slot
 G14 Input Module  1* Glonass Input, need 1 slot
 G15 Input Module  1* Galileo Input, need 1 slot
 G16 Input Module  1* GPS Input; 1* Bedou Input; 1* IRIG-B (DC RS422) Input, need 1 slot
 G17 Input Module  1* CDMA Input, need 1 slot

Oscillator Options for SNTF
Built in the Satellite Signal Receiving Module
No need extra slot for them

 K0 Built-in Oscillator  TCXO Oscillator Module; No need extra slot
 K1 Built-in Oscillator  OCXO Oscillator Module; No need extra slot
 K1 Built-in Oscillator  Rubidium Oscillator Module; No need extra slot
 
Frequency Module Options for SNTF
 F1 Frequency Module  2* Frequency ( Both 0-50Mhz and Square / Sine wave settable
 1* PPS Output
 1*TOD Message Output
 (Need 1 slot)
 F2 Frequency Module  4* Frequency ( Both 0-50Mhz and Square / Sine wave settable
 1* PPS Output
 1* TOD Message Output
 (Need 1 slot)

Alarm Module Options for SNTF
Each device can only choose 1 Alarm module, and each alarm module needs 1 slot
 A1 ALARM Module  1* PPS output;  
 1* IRIG-B output;
 1* Relay alarm message output for signal lost;  
 1* Relay alarm message output for power status;
 1x pluggable screw terminal block ( 2x4-pole)
 A2 ALARM Module  1* PPS output; 1* IRIG-B output;
 1* Relay alarm message output for signal lost;
 1* Relay alarm message output for power status;
 1x pluggable screw terminal block ( 2x4-pole);
 1* 10/100M independent NTP module, IEC104 Protocal; 1x RJ45 connector

Power module options for SGPS
PA1 Power Module: Standard power module for 1U.
PA1 needs 1 slot

 PA1 Power Module:
 Needs 1 slot
 1x 220V AC/220VDC/110VDC Input; 
 1x 5V@8A Output
                                                                                                                                           
Antanna Kit Options for SGPS

GNSS Antenna + Cable
  STX30  30m Antenna Kit: High-gain Antenna and 30m Antenna Cable ( Single / 2 in 1 / 3 in 1)
  STX50   50m Antenna Kit: High-gain Antenna and 50m Antenna Cable ( Single / 2 in 1 / 3 in 1)
  STX80   80m Antenna Kit: High-gain Antenna and 80m Antenna Cable ( Single / 2 in 1 / 3 in 1)
  STX100   100m Antenna Kit: High-gain Antenna and 100m Antenna Cable ( Single / 2 in 1 / 3 in 1)

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