SynchronICE 200 Series

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Front Panel
Rear Panel

Four-Channel Distribution of TTL and Analog

The second generation SynchronICE 200 Series is functionally similar to the original SynchronICE, with the addition of a redundant 1+1 power supply and extended ordering options.


  • 4 channels of distribution:
    • Dual 1:8 logic TTL channels
    • Dual 1:8 analog channels
  • Optional embedded low phase noise oscillator (See Section 3 for more information)
  • Forward or reserve rack-mountable
  • Redundant 1+1 power supply


Front View

Figure 1 – Front View of the SynchronICE-200 Chassis

Rear View

Figure 2 ‐ Rear View of the SyncronICE-200 Chassis

LED Indicators

Base Model (shown)

The model ICE-CLKPPS-DST-200 has one Power LED indicator on the front of the chassis. This Power LED will illuminate green as soon as the chassis is turned on with the front power switch.

Models with Embedded Oscillator (not shown)

The model ICE-CLKPPS-DST-293 (and 210) have one Power LED indicator on the front of the chassis and an additional 10MHz reference lock LED on the front and back of the chassis. It typically takes 30-50 seconds for the embedded low-phase-noise reference oscillator to warm up, during which its oven (OCXO) achieves temperature, and it locks to an external 10 MHz reference. Both lock LEDs on the front and back of the chassis will illuminate green when the reference is locked. The warm-up time may be longer depending on ambient temperature at the installed location of the unit.


Channel 1 (CH1), Local Oscillator

Base Model

Note: The reference lock LEDs, J01, and J02 are not populated in this model

Table 1 - Base Model Channel 1: Electrical Characteristics
Input impedance 50 Ω
LO Input to Channel 1 (J10) One Set 1:8 Designated CH1 (J10 series); Recommended 0 to +7 dBm input power
Output Level 1.2 dBm loss relative to input signal level on all 8 outputs J11–J18 with recommended input level
Note: If input is exceeded, the unit will accept the input and output +9 dBm on all channels.
Input and Output Coupling AC Coupled
Skew between outputs < +/- 500ps
Connectors SMA Female

Models with Embedded Oscillator

Figure 5 ‐ Channel 1 Characteristics

Table 2 - Models with Embedded Oscillator Channel 1: Electrical Characteristics
LO Reference 10 MHz Input (J02) +10 dBm Maximum
Input impedance 50 Ω
93 MHz Output (J01) +9 dBm typical (J01 – J10 Jumpered by default)
Output impedance 50 Ω
Input and Output Coupling AC Coupled
LO Input to Channel 1 (J10) One Set 1:8 Designated CH1 (J10 series); Recommended 0 to +7 dBm input power
Output Level Same as Input Level on all 8 outputs J11–J18.
Note: If input is exceeded, the unit will accept the input and output +9 dBm on all channels.
Skew between outputs < +/- 500ps
Connectors SMA Female

Channel 2 (CH2), 10 MHz Distribution

Figure 6 ‐ Channel 2 Characteristics

Table 3 - All Models Channel 2: Electrical Characteristics
10 MHz Input 0 +/- 7 dBm is the expected input for 10 MHz reference distribution.
Note: If input is exceeded, the unit will accept the input and output +9 dBm on all channels.
10 MHz Output One Set 1:8 Designated CH2 (J20 series)
Output impedance 50 Ω
Output Level 1.2 dBm loss relative to input signal level on all 8 outputs J21-J28 with expected input level of 0 to +7 dBm
Skew between outputs <+/- 500ps
Connectors SMA Female

Channel 3 (CH3) and Channel 4 (CH4) DC/TTL

Figure 7 ‐ Channels 3 and 4 Characteristics

3.3V TTL Output Two Sets 1:8 Designated CH4 (J40 series) and CH3 (J30 series)

Table 4 - All Models Channels 3-4: Electrical Characteristics
TTL Input 2.2-5.5VDC
Output impedance 50 Ω
Output Logic one: +3.3 Volts TTL (Threshold +2.0 Volts Minimum)
Output Logic zero: +0.0 Volts TTL (Threshold +0.8 Volts Maximum)
Rise Time: < 1.5 nsec
Fall Time: < 2 nsec
Skew between outputs: <+/- 500ps
Connectors: SMA Female
Note: To obtain 16 TTL outputs it is acceptable to split (only once directly from the source TTL device) an 3.3V input TTL source and feed J30 and J40 with the output of the splitter. The logic decision thresholds will allow full TTL 0.0-+3.3 to be present all outputs (J31-J38/J41-J48).
Table 5 - Operating Conditions & Dimensions
Operating Temperature: 0°C to 50°C
Humidity: 0 to 95% non-condensing
Power Inrush: 150 Watts momentary
Power Consumption: 30-35 Watts typical
Dimensions: 1.75” Height
16.75” Width (19” Rack Mountable)
15” Depth (17” including Handles)
Weight 8 lbs. 12 oz.

Optional Embedded Low Phase Noise Oscillator

An embedded low phase noise oscillator is included with some models (see Models). The oscillator can be customized for a specific fixed frequency. Please contact ICE for further details.

Example Oscillator Fundamental Specifications

The specifications are based on the 93 MHz Oscillator

Table 6 - 93 MHz Oscillator Specifications
Frequency 93 MHz
Stability Output Phase Noise L(f) (Free-Running)
100 Hz -120 dBc/Hz
1 KHz -150 dBc/Hz
10 KHz -170 dBc/Hz
100 KHz -171 dBc/Hz
Aging +/-1 1 x 10e-6 per year after 30 days operating, typical



The embedded low phase noise oscillator can be customized to a specific fixed frequency. Please contact ICE for more details.

Table 7 - Models
Model No. Local Oscillator Frequency
ICE-CLKPPS-DST-000 (Base Model) None
ICE-CLKPPS-DST-XXX Please contact for an alternative frequency

Power Supply

SynchronICE can be shipped with either an AC or DC power supply. The default configuration is an AC Supply. The power supply is cold swappable. The unit powers on immediately when the AC power cord is plugged into the chassis. This is the default configuration for infrastructure units that provide distribution of reference signals to down-stream devices.

AC Power Supply

Table 8 - AC Power Supply Electrical Specifications
AC Input 100-240 V AC, 5.5-2.5A, 47-63 Hz
AC Ouput +12V, 10 Amps for Each Module
AC Wattage 120 Watts

Figure 8 ‐ Hot Swap Power (rear view)

DC Power Supply

No longer provided.

Rack Mounting

  • SynchronICE can either be front-mounted or reverse-mounted.
  • The rack slides are produced by General Devices and are Chassis Trak Telescoping Slides part number C‐300‐S‐124‐RC CC3041‐00‐240.
  • Any General Devices C‐300 series rack slides will work with any SyncronICE model.

Forward Mounting

The forward-mounting position is the default orientation when shipped:

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Figure 10 ‐ Front Mounting Rack Slide Holes

Reverse Mounting

To change to reverse mount orientation follow the instructions below:

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Figure 11 ‐ Reverse Mounting Rack Slide Holes

Example Scenarios

Example Scenario of Channel 1

Embedded LO distribution to 8 ICE-A2Dm14 Modules

Figure 12 ‐ Maximum Clock Accuracy Scenario

Example Scenario of Channel 2

The standard chassis has one 10 MHz input and eight 10 MHz output channels.

Example Scenario of Channels 3, 4

These are both TTL logic channels. 1 PPS and DC IRIGB002 are typical distribution logics.

It is also possible to use the output of the ICE-PIC Card center sync port as an input to one of these channels with the 8 outputs going to down stream ICE-PIC Card center ports (slaves to the card from which the input pulse originates). When using this scenario, the port is no longer used for DC IRIGB, and NNTP time must now be used to determine the second.

SynchronICE and SunchronICE-200 comparison

Previous SynchronICE 100 Series Models


Model ICE-CLKPPS-DST-000 100 Series Base Model
Model ICE-CLKPPS-DST-010 100 Series with internal 10MHz Osc
Model ICE-CLKPPS-DST-093 100 Series with internal 93MHz Osc
Model ICE-CLKPPS-DST-XXX 100 Series with custom Osc

New SynchronICE 200 Series Models


Model ICE-CLKPPS-DST-200 200 Series Base Model
Model ICE-CLKPPS-DST-210 200 Series with internal 10MHz Osc
Model ICE-CLKPPS-DST-293 200 Series with internal 93MHz Osc
Model ICE-CLKPPS-DST-2XX 200 Series with custom Osc

The main update from the 100 series to the 200 series is the addition or a 1+1 redundant power supply and a power switch. All other functionality has been maintained.


The ICE-CLKPPS-DST 1U distribution chassis is designed with the specific intent of synchronizing multiple ICE-PIC Cards. It can also provide distribution of TTL signaling and analog sources. Example scenarios are shown above. We recommend testing of this unit to validate your operational scenarios.

All specifications are subject to change without notice. Your application and use scenario for this unit may alter the performance metrics.

Warnings and Cautions

SMA connections J01, J02 are D-Stamped. Do not over-torque. We recommend first to finger tighten with the blue tool provided.

Sma hand tool 400x224.png
Figure 13 – Included Hand tightening SMA wrench

Then we recommended purchasing the SMA Torque Wrench (shown here) to tighten the SMA connectors the remainder of the way down.

Sma torque wrench 800x178.png
Figure 14 – Recommended 4 Inch-pound precision torque wrench

4 Inch-Pounds of torque Part # 74 Z-0-0-79 / Ncm 45

45 N-cm = 3.982833 lb-in

74Z-0-0-79 Huber Suhner SMA Torque Wrench, .45Nm, 8mm/.315"

Part #: 419X416 Model #: 74Z-0-0-79

The Huber Suhner 74Z-0-0-79 steel SMA torque wrench is designed for use on SMA connectors. It has a torque of .45 Newton-meters (3.98 inch-pounds) and an opening of 8mm (.315"). Since the proper tightening torque ensures optimal performance over time, this break-over style torque wrench pivots when the torque setting is achieved, preventing over-torque conditions. Ergonomic styling makes the handling of this 4.5" long torque wrench easy.


This model is in production. For pricing, please see the Pricing page.