Model TC1504

Synchronous RS422 Fiber Optic Modem

TC1500 RS-449 Sync Fiber Optic Modem







  • Sync Data Rates Up to 2.048 bps
  • Distances up to 80km
  • Multimode or Single Mode (850/1300/1500nm)
  • DTE/DCE Selectable
  • Six Diagnostic LEDs
  • Slave Clock
  • Local & Remote Loopback Functions
  • High Temperature (-20C to 70C) Version Optional


Compact and reliable, the TC1504 Fiber Optic Modem links synchronous data communication equipment requiring RS-422/RS-449 interfaces. It supports synchronous data rates up to 2.048 Mbps with an external clock.

Transparent to the data, the TC1504 combines external clocking and data into an optical composite signal for transmission between local and remote units. It is DCE/DTE switchable.

Diagnostics include local and remote Loopback and visual indicators for power, Receiving Timing, Receive Data, Transmit Timing, Transmit Data, and Optic Sync. DIP switches are provided for the Local and Remote Loopback functions, Slave Clock, and DCE/DTE configuration.

The TC1504 will work with all types and sizes of multimode (850nm/1300nm) or single mode  (1300/1500nm) fiber optic cable. Fiber optic connectors are ST or FC. The electrical connector is a male DB37. Power is 9 to 12VDC or 115/230VAC with an external power cube. An extreme temperature version (-20C to 70C), Model TC1504H, is also available. 

TC1504 Specifications

Data Rates
Synchronous - External Clock DC to 2.048 Mbps
Transmitter LED/ELED
Receiver PIN
Wavelength 850nm/1300nm multimode
  1300nm singlemode
Fiber Optic connectors ST (FC or SMA optional)
Loss Budget 15dB multimode 850nm/1310nm @62.5um
  15dB single mode
1310nm @9um
Connector DB37 Male
Type RS422/RS449 DCE/DTE Switchable
Bit error rate 1 in l09 or better
Power source 9 to I2VDC @250ma
Optional: 115 or 230VAC with external power cube
Operating -100C to 500C
Hi-Temp (optional) -20C to 70C
Storage -400C to 900C
Humidity 95% non-condensing
Stand Alone Unit Height (2.0 cm) 0.72"
  Width (10.4cm) 3.89"
  Depth (7.5 cm) 2.36"
  Weight (170 gm) 5.46 oz.


Typical Application (Application Questions)

The TC1504 is typically used to link high speed synchronous data devices. It is frequently used in harsh environments because of its fiber optic benefits. This makes it is an efficient, low cost solution to electrical/radio frequency interference, ground loops, and lightning problems.