IUC-X9-TXA & IUC-7X-RXA: Telephone Transmission System for 1 Analog Signal Frequency Link specsheet 

Features: High Input-Output-Power Isolation (1500VAC Test) Industry Standard Inputs: 4-20 mA, 1-5 VDC, and more Industry Standard Output: 4-20 mA, 1-5 VDC, and more Send 1 Analog Signal over Standard Class C Phone Line Channel Fail Contact Easy Field Calibration (Typ. calibration time < 2 min. using handheld meter only) Microprocessor Controlled for High Accuracy Two Wire Supply Option for Two Wire Transmitters Power: 117 VAC 50/60 Hz (Optional 24 VDC) High Noise Rejection CSA and NRTL Approved (LR 51078)

Function:
The IUC-X9-TXA is a telephone line transmitter which takes in one of a number of standard analog signal. It has a 600 Ohm impedance matched output which can connect directly into a class C telephone line. A frequency signal is sent to the IUC-7X-RXA telephone line receiver where it is converted back to an analog signal. The IUC-7X-RXA also has an impedance matched input to allow direct connection to the phone line. A built in line monitor detects line failures and closes a contact if this happens.

Specifications: Isolation: Input to Output to Power 1500 VAC (test) Accuracy/Linearity: 0.3% max., 0.1% typ. (@ 20-100% Output) Operating Temperature: -40 Deg.C. to +50 Deg.C Temperature Effects: 0.5% max., 0.2% typ. (for 40 Deg.C. change) Loop Drive: Max. 1000 Ohms at 20mA

Manuals: IUC-X9-TXA IUC-7X-RXA IUC-X9-TXA-N IUC-7X-RXA-N