TrueTime 800 Series Guida alla configurazione
800gench1.fm Rev. A 800TCU User’s Guide 1-1
1
General Information
1.1 Scope of Manual
This manual contains the information necessary to operate and maintain a TrueTime 800
Series Time Code Unit (TCU).
1.2 Conventions
The conventions used in this manual are:
Text = Indicates body text
Italics = Emphasizes important information
= Used with bold text to call attention to important information
= Used with bold text to identify potential damage to equipment
= Used with bold text to identify potential injury
text = Used to display output character strings
text =Used to indicate text you should enter with your keyboard,
exactly as printed
This unit may contain Custom Options and/or Configurations. A description
can be found starting on sheet iii of the index. This description may modify or
supersede descriptions or specifications elsewhere in this manual.
Caution
WARNING
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General Information Purpose of Equipment
1.3 Purpose of Equipment
The Model 800 Series is a family of Time Code instruments designed around a versatile
microprocessor. The three basic operating modes of these instruments are:
1. As a Time Code Generator that accumulates time from an entered starting time and
then provides various outputs based on the accumulated time.
2. As a Time Code Translator that deciphers serial time codes from some external source
and provides various outputs based on the decoded time. The Translator operates in
both the forward and reverse directions.
3. As a Synchronized Generator it is derived from the input time code and is
phase-locked to the input code. If the input fails, the generator continues to update
using its time base as the reference. Further, the internal oscillator is disciplined to the
frequency of the input code, which further enhances the performance of the unit during
periods of input code failure.
The various operating modes are optional and are supplied if they are marked (X) in the
Table of Contents.
1.4 Physical Specifications
The physical specifications are:
Height: 1.73 in (4.39 cm)
Width: Suitable for mounting in a standard 19.0 in (48.26 cm)
equipment cabinet
Depth: 14.0 in (35.56 cm) plus mating connectors
Weight: Approximately 10 pounds
1.5 Environmental Specifications
The temperature specifications are:
Operating Temperature: 0 to +50°C (+32 to +122°F)
Storage Temperature: -17 to +100°C (0 to +212°F)
Humidity: To 95% relative, non-condensing
Cooling Mode: Convection
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Power Specifications General Information
1.6 Power Specifications
The input power specifications are:
Voltage: 95 to 260 VAC
Frequency: 47 Hz to 440 Hz
Power: Approximately 15 Watts
1.7 Option Identification
Each of the options that are supplied with this unit are indicated in the Table of Contents
by an (X). Custom Options/Configurations are described on page iii of the manual index.
1.8 Signal Specifications
1.8.1 Generator Specifications
General Specifications, Generator
Days Reset: Resets to day 1 after day 365
Leap Year: Resets to day 1 after day 366
Advance/Retard Rates: 0.5 µs, 1 µs, 10 µs, 100 µs, 1 ms, 10 ms, 100 ms, 500 ms
and 1 second
Front-panel Controls and Indicators:
Operating Mode
Generate Time
Status Messages
Leap Year and Time Base Select
Advance/Retard Rate
External Start
Generate Code
Video Mixer Controls
Front-panel Controls Disable
Start and Stop
Internal Oscillator (STD)
Frequency: 10 MHz
Stability: < 50 PPM, 0 to +50°C
Aging: < 1 PPM/year
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General Information Signal Specifications
Internal Oscillator (TCXO)
Frequency: 10 MHz
Stability: < 0.5x10E-6, 0 to +50°C
Aging: < 1 PPM/year
Internal Oscillator (OCXO)
Frequency: 10 MHz
Stability: < 1x10E-8, 0 to +50°C
Aging: < 2x10E-9/day
External Time Base Input
Frequency: 1 MHz
Amplitude: 0.5 to 10 Vpp
Impedance: 10 kΩto ground
External Start Input
Active Edge: Selectable, rising or falling. Starts on the next edge after
being Armed.
Levels: Logic Zero: 0 ±0.5 VDC
Logic One: >+2.5 VDC, <+5 VDC
Impedance: 4.7 kΩto +5 V
IRIG-B Time Code Output
Amplitude: Adjustable, 0 to 10 Vpp into 600 Ωto ground
Ratio: Adjustable, 2:1 to 5:
NOTE: Rear Panel BNC is typically labeled "GEN
CODE"
Timing Signals
Rates: 1 kPPS, 100 PPS, 10 PPS, 1 PPS
Duty Cycle: 50%
Amplitude: 0 to +5 VDC at ±6 mA
Timing: Rising edge on time
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Signal Specifications General Information
1.8.2 Translator Specifications
General Specifications, Translator
Days Reset: Resets to day 1 after day 365
Leap Year: Resets to day 1 after day 366 on the day armed
Advance/Retard Rate: 0.5 µs, 1 µs, 10 µs, 100 µs, 1 ms, 10 ms, 100 ms, 500 ms
and 1 second
Front-panel Controls and Indicators:
Operating Mode
Translator Time
Status Messages
Leap Year Select
Error Bypass Select
Input Polarity and Filter
Translate Code
Forward/Reverse Translation
Video Mixer Controls
Code Input
Format: Amplitude modulated IRIG-B
Amplitude: 0.1 to 10 Vpp
Bandwidth: 30 Hz to 50 kHz
Ratio: 2:1 to 6:1
Impedance: 100 kΩto ground
Polarity: Selectable, positive or negative
Direction: Selectable, forward or reverse
Error Bypass
Bypass: Selectable, 0 to 9 frames and infinite
Timing Signals
Rates: 1 kPPS, 100 PPS, 10 PPS, 1 PPS
Timing: Rising edge on time
Amplitude: 0 to +5 VDC at ±6 mA
Duty Cycle: Dependent on input code carrier
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General Information Signal Specifications
1.8.3 Synchronized Generator Specifications
General Specifications, Sync Generator
Days Reset: Resets to day 1 after day 365
Leap Year: Resets to day 1 after day 366 on the day armed
Phase Correction: Automatic, 500 ns corrections
Front-panel Controls and Indicators:
Operating Mode
Translator Time and Generator Time
Status Messages
Leap Year and Time Base Select
Error Bypass Select
Prop. Delay, Input Code Polarity and Filter
Sync Gen Input Code and Gen Code
Oscillator Discipline Complete Status
Video Mixer Controls
Auto Advance/Retard Direction and Rate
Code Input, Carrier
Format: Amplitude modulated IRIG-B
Tracking Range: 1 kHz ±1x10E-5
Amplitude: 0.1 to 10 Vpp
Impedance: 100 kΩto ground
Polarity: Selectable, positive or negative
Direction: Forward
Ratio: Adjustable, 2:1 to 5:1
Code Input, DC-shift (Optional, see Top Assembly)
Format: DC-shift IRIG-B
Tracking Range: 100 PPS ±1x10E-5
Amplitude: 0 VDC, ±0.5 VDC to +5 VDC
Impedance: 74HC input
Timing: Rising edge on time
Direction: Forward
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Standard Option Specifications General Information
Propagation Delay Compensation
Range: 0 to 99.999 ms in 1 µs increments
Error Bypass
Frames: Selectable, 0 to 9 and infinite
Timing Signals
Rates: 1 kPPS, 100 PPS, 10 PPS & 1 PPS
Duty Cycle: 50%
Amplitude: 0 to +5 VDC at ±6 mA
Timing: Rising edge on time
1.9 Standard Option Specifications
Parallel BCD
Data: Milliseconds through days
Amplitude: HCMOS
Levels: Logic 0: 0 VDC
Logic 1: +5 VDC
Drive: ±6 mA
Data Ready Pulse Width: Approximately 5 µs
Data Ready Rate: Rate of the LSB of the data
Data Ready Timing: Rising edge indicates stable data
Connector: Rear-panel female 50-pin ribbon
Mating male 50-pin ribbon
Pin Assignment: See Table 1-1
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General Information Standard Option Specifications
RS-232, Talker Only
This interface supplies time only on demand. See Chapter 2 for complete programming
information. The RS-232 specifications are:
Data: Milliseconds through days
Data Rate: 9600 baud
Format: 1 start bit, 8 data bits, no parity, 1 stop bit
Resolution: Generate Mode: 1 ms
Sync Gen Mode: 1 ms
Translate Mode: 10 times the carrier frequency and 100
times the carrier frequency in multi-code units.
Connector: Rear-panel female 9-pin D subminiature
Mating male 9-pin D subminiature
Pin Assignment: See Table 1-4
RS-232, Talker/Listener
This interface supplies time on demand and may be used to remotely control the unit.
Otherwise the unit specifications are the same as the Talker Only. See Chaper 2 for
complete programming information.
Multiple Generate Codes
Formats: IRIG-A, B, E, E1K, H and H1K
Amplitude: Adjustable, 0 to 10 Vpp into 600 Ωs to ground
Ratio: Adjustable, 2:1 to 5:1
Multiple Translate Codes
Formats: IRIGs A, B, E1K, G
Amplitude: 0.1 to 10 Vpp
Bandwidth: 50 Hz to 50 kHz
Ratio: 2:1 to 6:1
Impedance: 100 kΩto ground
Polarity: Selectable, positive or negative
Direction: Selectable, forward or reverse
Simultaneous Generate Codes
Formats: IRIGs A, B, E, E1K, H and H1K
Amplitude: Adjustable, 0 to 10 Vpp into 600 Ωto ground
Ratio: Adjustable, 2:1 to 5:1
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Standard Option Specifications General Information
IRIG PB1 (Parallel Binary)
Data: Nine bits of binary days, 27 bits of ms, time of day.
Data rate: 1 kPPS
Parity1: Odd for 27 bits of ms plus days
Parity2: Odd for 27 bits of ms
Data Ready Pulse: Active low pulse while data is changing. At 0 V for
approximately 30 µs.
Drive: Positive true HCTTL, sink and source 8 mA
Connector: AMP 205514-1, fixed male jackscrew at pin A
(200874-1), fixed female jackscrew at pin FF (200875-1).
Pin Assignments: See Table 1-2
Reference Frequency Outputs
Frequencies: 100 Hz, 1 kHz, 10 kHz and 100 kHz
Amplitude: Adjustable, 0 to 1 Vrms into 75 Ωto ground
Video Time Inserter
This option is used to superimpose time-of-year information on a the user’s video signal.
Controls: Time Insertion on/off
Background on/off
Background white/black
Character intensity
Days information on/off
Ms information on/off
Horizontal position
Vertical position
Horizontal Character size
Vertical Character size
Resolution: Generator: 1 ms
Synchronized Generator: 1 ms
Translator: 10 ms
Termination: Switchable on or off, 75 Ω
Bypass: When the power is off, the video input signal is directly
connected to the output.
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General Information Standard Option Specifications
True Simultaneous Generator Mode
The Generator continues output Generator Code even while the unit is in the Translator
mode.
Extended Baud Rate Range
Data Rate: Selectable, 300, 600, 1200, 2400, 4800 and 9600 bps
See Table 1-3
Transformer-coupled Input
Impedance: 600 Ωbalanced
Connector: Female isolated BNC, J1
Balanced Code Output
Amplitude: Adjustable, 0 to 6 Vpp into 600 Ω
Connector: 5-pin Barrier Strip
Pin Assignment: Pin 1: High
Pin 2: Low
Pin 3: Ground
1.9.1 IEEE-488 Interface
Most standard protocols are supported. The device address is programmable at the front
panel. See Chapter 2 for the I/0 command structure.
Indice
