Section I Model 1415A
Figure 1- 1 and Table 1- 1
Figure 1- 1. Model 1415A Time Domain Reflectometer
Table 1-1. Specifications
SYSTEM (in reflectometer configuration) DROOP: Less than 1%.
RISE TIME: Less than 150 psec. D ISTAN CE/TIME SCALE
OVERSHOOT: 5% or less overshoot and ringing
(down to 1/2% in 2 nsec). DISTANCE SCALE ACCURACY (cm of Line/cm of
Display): 5%.
INTERNAL REFLECTIONS: Less than 10% (does POLYETHYLENE LINE (E =2.25): 200 cm/cm
not limit resolution). to 2000 cm/cm.
REFLECTOMETER SENSITIVITY: Reflection AIR LINE (E=l): 300 cm/cm to 3000 cm/cm.
coefficients as small as 0.001 can be observed.
REPETITXON RATE: 150 kc nominal. TIME SCALE: 20 to 200 nsec/cm, +5% accuracy.
MAGNIFICATION: X1 to ZOO in 1,2,5 sequence.
SIGNAL CHANNEL Accuracy of the basic sweep is maintained at all
magnifier setting$ with the exception of time
RISE TIME: Approximately 110 psec. represented by the first 0.1 cm of the unmagni-
REFLECTION COEFFICIENT: 0.5/cm to 0.005/ fied sweep after start of the step.
cm in 1,2,5 sequence.
INPUT: 50 ohms, feed-through type. DELAY CONTROL: 0 to 10 cm of unmagnified
NOISE AND INTERNAL PICKUP, PEAK 0.1% sweep, calibrated.
JITTER: Less than 20 psec.
of step (terminated in 50 ohms).
DYNAMIC RANGE: +O. 5 volt. ACCESSORIES FURNISH ED
EXTERNAL SIGNAL LEVEL: Up to 1 v peak may DESCRIPTION QUANTITY
be safely applied to the SIGNAL OUT connector.
ATTENUATOR ACCURACY: i3%. GR Elbow (EL connector) 2
GR to type N adapter 1
BNC to type N adapter 1
STEP GENERATOR
POWER
AMPLITUDE: Approximately 0.25 v into 50 ohms Supplied by 0 scilloscope.
(0.5 v into open circuit).
WEIGHT
RISE TIME: Approximately 50 psec. Net, 7 lbs. (3,2 kg).
OUTPUT IMPEDANCE: 50 ohms i1 ohm.
1-0 01944-9 |
ACEC
