Signal Distribution

TFD-100 Family

Modular 1PPS/10MHz/IRIG-B Distribution Unit

The TFD-100 series is a 1U, rack mount, modular time and frequency distributor. It provides the precise distribution of any frequency from 1PPS up to 10MHz include most popular standards: 1PPS, IRIG-DCLS, 10MHz (TTL and SIN).

You can order the following base modules that differ in power supply:

  1. TFD-101 – single 230V AC power supply
  2. TFD-102 – dual, redundant 230V AC power supplies
  3. TFD-110 – single 48V DC power supply
  4. TFD-120 – dual, redundant 48V DC power supplies
  5. TFD-111 – dual, redundant 230VAC and 48VDC power supplies


Available input modules:

  1. TFM-1012 – two digital inputs (level TTL/50Ω) for 1PPS and 10MHz. Input sockets: BNC or SMA.
  2. TFM-1022 – two switched, analog 10MHz (min. 300mV p-p) inputs for frequency distribution. Input sockets: BNC or SMA.
  3. TFM-1032 – two switched, digital, differential (standard RS422/100Ω) inputs for IRIG-DCLS. Input sockets: Terminal Block (3.5 mm)
  4. TFM-1042 – two switched, digital fiber-optics inputs for 1PPS, IRIG-DCLS, 10MHz signals. Transmission over a distance up to 2.5 km. Input sockets: ST, SC or FC.
  5. TFM-2000 – GPS/GLONAS/Baidou disciplined TCXO precise time and frequency source. It provides 1PPS, 10MHz TTL signals and ToD (NMEA serial).
  6. TFM-2010 – GPS/GLONAS/Baidou network time server (NTP, PTP). Includes high quality OCXO 10MHz frequency source synchronized to GPS.
  7. TFM-2020 – PTP Slave, high precise time/frequency source module.


Available output modules:

  1. TFM-1114 – four digital outputs module (TTL @50Ω) for 1PPS, IRIG-DCLS, 10MHz. Output sockets: BNC or SMA
  2. TFM-1124 – four analog 10MHz sinus (3V p-p @ 50Ω) outputs module. Output sockets: BNC or SMA
  3. TFM-1134 – four digital (RS-422 standard)  outputs module for IRIG-DCLS. Output sockets: Terminal Block 3.5 mm
  4. TFM-1144 – four digital fiber-optics outputs module for 1PPS, IRIG-DCLS, 10MHz. Transmission over a distance up to 2.5 km. Output sockets: ST, SC or FC

Key features:
• 1PPS signal (TTL) distribution
• IRIG-DCLS (TTL) distribution
• Compact Rack Mount 1U-High metal package
• ± 400ps differential delay between outputs
• Input to output delay <5ns

Technical Specification

model TFM-100

Modular Time & Frequency distributor


1PPS (TTL), 10 MHz (Sin), 10MHz (TTL), IRIG-DCLS (Unmodulated) and other


0 up to 10 MHz

Input/Output impedance

50 Ω

Input/output connectors


Rise time


Fall time



<100ps RMS


0°C to 50°C


0-95% non-condensed


Single or dual, 85…264V AC, 100…370V DC or 48VDC


44 x 483 (19’’) x 330 mm




IEC 61010-1:2010 / EN 61010-1:2010


EN61326-1 (2006) EMC
• Requirements for Measurement Control
and Laboratory Equipment, Class A
• EN61000-3-2 (2006) +A1+A2 Harmonic
Current Emissions
• EN61000-3-3 (2008) Voltage Fluctuation
and Flicker Emissions