BNC 106C Manual de usuario
Instruction Manual
Model 106C/130/155
Optical Module
Berkeley Nucleonics Corporation
2955 Kerner Blvd. San Rafael, CA 94901
Ph: 415-453-9955 Fx: 415-453-9956
www.berkeleynucleonics.com
2
WARRANTY
Berkeley Nucleonics Corporation warrants all instruments, including
component parts, to be free from defects in material and workmanship,
under normal use and service for a period of one year. If repairs are
required during the warranty period, contact the factory for component
replacement or shipping instructions. Include serial number of the
instrument. This warranty is void if the unit is repaired or altered by others
than those authorized by Berkeley Nucleonics Corporation.
3
CONTENTS
Page
SECTION 1 SPECIFICATIONS 7
Model 106C, 155 and 130 Characteristics 7
Module Status Byte Summary 9
SECTION 2 OPERATING INFORMATION 10
Features 10
General 11
Power Up 11
Module Installation 11
Safety Precautions 11
Warm Up Requirements 11
Troubleshooting 11
Default Settings 12
Front Panel Description 12
LED Indicators 12
Connectors 13
Rear Panel Description 13
Mainframe Operation 13
Front Panel Programming 13
Remote Programming 16
SECTION 3 THEORY OF OPERATION 17
General 17
Module Interface 17
Laser Driver Output 17
Circuit Description 18
Module Interface Board 18
Laser Output Board 20
Inputs and Control Signals 20
Laser Module 21
CW Mode 21
External Modulation Mode 23
Pulse Mode 24
Pulse Mode (Nonzero Baseline) 24
Pulse Mode (Zero Baseline) 25
External Drive 25
Impulse Mode 25
Laser Protection 26
4
CONTENTS
SECTION 4 MAINTENANCE AND CALIBRATION 27
Maintenance 27
Light Output Connector 27
Calibration 27
General 27
Equipment Required 27
Procedure 28
Module Interface DAC Calibration 28
External Drive Discriminator 28
CW and External Modulation Calibration 29
Pulse Baseline Calibration 29
Pulse Peak Calibration 29
Pulse Dynamic Characteristics 30
SECTION 5 PARTS LISTS AND SCHEMATICS 31
Parts List 31
Laser Output Board, 155-1 31
Module Interface Board, 6040-4 35
Schematics Dwg.No.
Interconnection Diagram 155-30
Module Interface Board 6040-35A
Laser Output Board 155-31
5
CONTENTS
ILLUSTRATIONS
Figure No. Page
1-1 Trigger and Output Pulse Timing
2-1 Safety Labels
3-1 Module Interface Block Diagram
3-2 Laser Output Block Diagram
TABLES
Table No. Page
1-1 Module Status Byte Summary 9
2-1 Menu Keys for the 135/130 Module 14
3-1 Plug-In Module Memory Map 19
3-2 Control Signals 22
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1064nm, 1560nm AND 1310nm OPTICAL MODULES
MODEL 106C, MODEL 155 AND MODEL 130
Graphic (Model 155 & 130)
The Model 106C, Model 155 and Model 130 are three in a series of plug-in modules that provide
electrical and optical output pulses when installed in the Model 6040 mainframe.
These particular modules provide optical pulses of 1064, 1560 and 1310 nm wavelengths at peak levels
to 1 mV at rates to 100 MHz.
7
SECTION 1
SPECIFICATIONS
MODEL 106C/155/130 CHARACTERISTICS
Timing Characteristics
Rep Rate: 0 Hz-100 MHz
Width: 3 ns - 640 s (Pulse Mode); 3 ns (min.) at reduced
amplitude.
Impulses, fixed 400 ps fwhm (typical).
Input Characteristics
EXTERNAL DRIVE
Range: dc - 300 MHz (200 MHz for zero Baseline level):
specifications apply dc - 100 MHz.
Input Impedance: 50 ohms.
Minimum Signal Amplitude: 300 mV.
Maximum Signal Amplitude: ±7 V dc or 10 V ac p-p.
Minimum Width: 5 ns; 3 ns (min.) at reduced amplitude.
Threshold Range: ±2.5 V.
Threshold Resolution: 10 mV.
Insertion Delay: 5 ns, typical (between EXT DR and LIGHT OUT).
Jitter: 30 ps rms (between EXT DR and LIGHT OUT).
Connector: Threaded SMA (3 mm).
EXTERNAL MODE
Range: 100 Hz to 700 MHz (-3 dB).
Input Impedance: 50 ohms.
Sensitivity: 200 mV rms/mW, typical.
Maximum Signal Amplitude: ±2 V dc or 3 V ac p-p.
Total Harmonic Distortion: < 20 dB below fundamental (0.5 mW avg, level with
0.5 mW rms modulation).
Insertion Delay: 5 ns, typical (between EXT MOD and LIGHT OUT).
Connector: Threaded SMA (3 mm).
8
SPECIFICATIONS cont’d.
Output Characteristics
LIGHT OUT
Wavelength: Model 106C: 1064nm ±30 nm
Model 155:1550 nm ±30 nm.
Model 130:1310 nm ±50 nm.
Spectral Width: 2 nm rms (from 50 uW to 1 mW).
Power Level: 1 mW max. (Peak or Baseline). 0 mW min.
Impulse is fixed at 50 µW Baseline and 0.5 mW Peak
(typical).
Power Level Resolution: 5 µW (from 50 µW to 1 mW),
Extinction Ratio: CW Mode and External Modulation Mode, has 5 µW
resolution from 0 to 1 mW
Mesial Level: ∞(zero Baseline), or 20.0 to 1.01.
Pulse Adjustment Range: 25 µW (zero Baseline), or 55 µW to 0.995 mW.
(Max. pulse size: min. pulse size.) 20 dB (non-zero
Baseline), 13 dB (zero Baseline), 20 dB (CW.
External
Modulation).
Accuracy, Absolute: ±1 dB (from 50 µW to 1 mW).
Accuracy, Relative: ±0.5 dB (±10 %) from 100 µW to 1 mW (Pulse
Mode).
±0.05 dB (±0.5 %) from 50 µW to 1 mW (CW.
External
Modulation).
Temperature Coefficient: 0.05 dB/°C.
Transition Times (10 to 90%): 0.5 ns rise time, 1 ns fall time (zero Baseline),
1 ns rise time, 1 ns fall time (nonzero Baseline).
Insertion Delay: 35 ns, typical (between mainframe TRIG OUT and
LIGHT OUT; see Figure 1-1).
Jitter: 100 ps rms (between mainframe TRIG OUT and
LIGHTOUT).
Connector: ST, 8/125 um single-mode fiber, 0.12 NA (contact
factory for other connectors).
9
SPECIFICATIONS cont’d.
Modes
PULSE Conventional pulse generator with rate, delay, width
and single/double pulse selections controlled by
the 6040 mainframe. External Drive operation
produces pulses corresponding in rate and duty
cycle to an external pulse train.
EXTERNAL MODULATION Converts digital and analog electrical signals are into
their optical equivalent.
IMPULSE Provides a narrow pulse of fixed width and
amplitude, with rate and delay controlled by the 6040
mainframe.
Module Status Byte Summary
Table 1-1. Module Status Byte
Bit Description
7 Always zero
6 Always zero
3 Always zero
4 Always zero
3 Always zero
2 Always zero
1 Laser Active
0 Laser Guard
10
SECTION 2
OPERATING INFORMATION
FEATURES
The Model 106C, 155 and 130 plug-in modules provide 1064nm, 1550 nm and 1310 nm optical output
sources for the Model 6040 Universal Pulse Generator. Accurate and adjustable outputs are available for
all of the four modes in which the 6040 mainframe can operate.
In Pulse Mode operation, the 106C/155/130 supplies flat-topped pulses with fast rise and fall times and
independently adjustable Peak and Baseline levels. The timing for these pulses may be supplied in a
number of ways.
A delayed pulse of adjustable width may be generated by the mainframe. This delay can be specified
with respect to an internal trigger occurring at a selected repetition rate or with respect to an externally
supplied trigger signal (TRIG IN). In addition, Single Cycle operation allows the user to trigger the
instrument manually, using a pushbutton (or using remote programming). In each case a trigger out
signal (TRIG OUT) is provided by the 6040 for reference (see Figure 1-1). Double Pulse operation,
producing both an initial and delayed pulse put of the same jack may be selected for any trigger choice.
For all of these timing options, the mainframe supplies electrical output pulses (PULSE OUT) coincident
with the module's optical output (LIGHT OUT).
External Drive operation is also available in the Pulse Mode. This allows a drive signal, supplied by the
user to the module's front panel (EXT DR), to generate the optical pulses directly. The occurrence and
duration of each light pulse will correspond to that of each pulse in the external drive signal: when the
EXT DR pulse goes high, the light pulse goes to the Peak value. Peak and Baseline output levels remain
specified by the mainframe (as well as the threshold level for the external drive signal). With External
Drive, the mainframe's pulse and trigger outputs are disabled.
In External Modulation Mode, an electrical signal supplied to the module's front panel (EXT MOD) by the
user will be converted into its optical analog. The quiescent optical level, corresponding to the zero point
that the input signal modulates about, is selected by the mainframe (External Modulation Level), but no
other parameters can be altered.
In the Impulse Mode, a narrow optical pulse of fixed width and amplitude is produced at the module
output (LIGHT OUT) with a corresponding pulse (of 5 ns duration) appearing at the mainframe (PULSE
OUT). As with the Pulse Mode, the trigger source may be internal, external or from manual (or remote
programming) control. Either a single delayed impulse or a pair of impulses separated by a delay may be
obtained. In Impulse Mode, External Drive operation is disabled; and Peak and Baseline Level settings
also have no effect.
CW Mode results in a steady-state optical output. The output power level in this Mode may
be adjusted by the mainframe (CW Level).
For more detailed information on the characteristics of each Mode and hour to control the module from
the mainframe, see the Specifications section and the 6040 manual.
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2
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