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The Arbiter Systems®,
Inc. Model 1073A Distribution Amplifier is designed to
buffer and distribute signals generated by sources such as
the Models 1084A/B/C, 1088B, 1092A/B/C and the 1093A/B/C GPS
Satellite-Controlled Clocks. The Model 1073A 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 volt
rms.
Each channel may be
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 dc-coupled. In dc-coupled
mode, the Model 1073A can distribute 5 V CMOS/TTL
logic-level signals, such as one pulse per second (1 PPS)
and un-modulated IRIG-B time-code. In ac-coupled mode
(intended for frequencies of 100 kHz or greater), the Model
1073A can receive and distribute timebase and reference
frequency signals up to 10 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 1073A is not suitable for distribution of modulated
IRIG-B signals.
Intended primarily
for unattended operation, the Model 1073A has no display or
keyboard. A front-panel LED indicates that power is applied
and the unit is operating. Power options include 85 to 264
Vac/110 to 275 Vdc with an IEC-320 detachable cordset, 110
to 275 Vdc terminal strip inlet with surge withstand, or 10
to 60 Vdc terminal strip inlet with surge withstand.
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