TIMING AND FREQUENCY PRODUCTS Distribution Amplifier The Arbiter Systems®, Inc. Model 1 073A Distribution Amplifier is designed to buffer and distribute signals generated by sources such as the Models 1 084A/B/C, 1 088B, 1 092A/B/C and the 1 093B/C GPS SatelliteControlled Clocks. The Model 1 073A includes three separate channels, each with four high-drive-capability outputs, to buffer your choice of signals. Each channel has a limiting amplifier to stabilize the peak-to-peak signal level. Each input is galvanically isolated with a transformer or optical isolator to break ground loops and reject common-mode signals. Standard isolation is 2000 volts rms. Each channel may use independent signals or, for applications requiring more than four outputs, may use the same signal. Channel A may drive channels B and C or channel B may drive channel C. These selections are made with internal jumpers. For fiber-optic input signals, Option 01 provides an 820 nm, Type ST optical fiber input for channel A. Each input and output may be individually ac- or dccoupled. In dc-coupled mode, the Model 1 073A can distribute 5 V CMOS/TTL logic-level signals, such as one pulse per second (1 PPS) and unmodulated IRIGB timecode. In ac-coupled mode (intended for frequencies of 1 00 kHz or greater), the Model 1 073A can receive and distribute timebase and reference frequency signals up to 1 0 MHz. Input and output configuration may be independently selected. For example, a channel may receive an ac-coupled 5 MHz input, and one output of that channel may be set for dc-coupled (logic-level) output while the other three are set for ac-coupled outputs. Settings are made with internal jumpers. Because of the limiting amplifiers and frequency limit when ac coupled, the Model 1 073A is not suitable for distribution of modulated IRIG-B signals. Intended primarily for unattended operation, the Model 1 073A has no display or keyboard. A front-panel LED indicates that power is applied and the unit is operating. Power options include 85 Vac to 264 Vac or 1 1 0 Vdc to 370 Vdc with an IEC-320 detachable cordset, 85 Vac to 250 Vac or 1 1 0 Vdc to 350 Vdc terminal strip inlet with surge withstand, or 1 0 Vdc to 60 Vdc terminal strip inlet with surge withstand. Arbiter Systems, Inc. · 1 324 Vendels Circle, Suite 1 21 · Paso Robles, CA 93446 · USA Tel: +1 .805.237.3831 · Fax: +1 .805.238.571 7 · E-mail: [email protected] · Internet: http://www.arbiter.com

TIMING AND FREQUENCY PRODUCTS Model 1 073A Specifications I/O Configuration Configuration Channels Voltage Three, each with four outputs Independent Each channel independently driven Common A/B B/C outputs driven by A or B input Selection Internal push-on jumpers DC coupled Level Polarity Frequency AC coupled Level Frequency Selection Isolation Driver Coupling Selection Level Impedance Connectors Input Output Fiber Optic Opto-isolator (HCPL2601 ) in series with 562-ohm resistor 5 mA at 5 volts, nominal Center conductor positive DC to 5 MHz RF transformer; 50 ohms 0 dBm to + 1 5 dBm (0.6 Vpp to...

TIMING AND FREQUENCY PRODUCTS Model 1 073A Specifications Accessories Included Description 1 9 in Rack Mount Kit Quick Setup Guide Power Cord (with Option 07) Description Power Cord Operation Manual BNC (Male) Breakout to 1 00 mm Wires BNC (Female) Breakout to 1 00 mm Wires 1 9 in Rack Slide Kit 24 in Rack Mount Kit Arbiter Systems, Inc. · 1 324 Vendels Circle, Suite 1 21 · Paso Robles, CA 93446 · USA Tel: +1 .805.237.3831 · Fax: +1 .805.238.571 7 · E-mail: [email protected] · Internet: http://www.arbiter.com