Symmetricom 5071A, Руководство по эксплуатации и программированию

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Chapter 6 Specifications
Supplemental Characteristics
Operating and Programming Manual 113
Supplemental Characteristics
Time Standard
Clock Display
24-hour red LED display of hours,
minutes, and seconds.
Clock 1 PPS Outputs
All outputs are isolated from each other.
Amplitude: ≥ 2.4 V into 50Ω
(output levels are TTL
compatible).
Width: 20 s ±10 ns
Rise Time: < 5 ns (slew rate >10
9
volts/second at 1.5 volts).
Jitter: <1 ns rms (pulse-to-pulse or
pulse-to-10-MHz).
Connectors: BNC.
Locations: one on front panel, two
on rear panel
Clock Synchronization
Automatic synchronization:
to within 50 ns of reference
pulse.
Sync pulse: 2 inputs; each may be
independently armed.
Amplitude: +2 to +10 volts
(maximum). Pulse width must
be less than 100 s maximum.
Width: 100 ns minimum,
100 s maximum.
Rise Time: <50 ns.
Input impedance: 50Ω (nominal).
Time reference: rising edge
Connectors: BNC.
Location: one on front panel, one
on rear panel.
Manual synchronization:
Range: -0.5 to + 0.5 s.
Resolution: 50 ns.
Frequency settability
†
Resolution: 6.3 x 10
-15
Range: ±1.0 x 10
-9
Internal Standby Battery
(Nominal Values)
Capacity
45 minutes at 25 C from full charge.
Charge Time
16 hours maximum from
fully discharged state.
Charge source
ac input power only.
Remote System Interface and
Control
RS-232C (DTE configuration)
Provides complete remote
control and interrogation of
all instrument functions and
parameters. RS-232C
interface circuits are optically
isolated and floating with
respect to 5071A chassis.
Software command set:
Standard commands for
Programmable Instruments
(SCPI), version 1990.0
adapted for RS-232C.
Connector: 9-pin male
rectangular D-Subminiature
type.
Status Output
Provides a logic output to
monitor normal and abnormal
operation externally.
Parameters which define
abnormal operation can be
user programmed.
Output: TTL High, Normal
TTL Low, Fault
Circuit is TTL open collector
With internal pull-up
resistor.
Circuit can sink up to 10 mA.
Connector: BNC located on
rear panel.
Power Requirements
(for 48 Vdc operation, see 48V
option on the following page)
Input voltage:
AC: 100, 120 Vac ±10%, 45 to
440 Hz.
220, 240 Vac ±10%, 45 to 66
Hz.
DC: 22 to 42 Vdc operating
Damage level: 55 V.
NOTE: Both DC input terminals
are floating. Either input
terminal may be connected to
the chassis, or both may be
left floating. The maximum
allowable voltage between
either input terminal and the
chassis is 45 V.
Input power (nominal):
AC: Primary power source;
unit will draw AC power in
preference to DC power.
Warm-up:
Standard: 100W, 140 VA.
High Perf: 100W, 140 VA.
Operating:
Standard: 50W, 70 VA.
High Perf: 56W, 78 VA.
DC:
Warm-up:
Standard: 85W.
High Perf: 85W
Operating:
Standard: 45W
High Perf: 50 W.
Standby operation:
Unit requires 20% less power.
† Footnotes are defined starting on page 115.