| Model TB-4 is a bin and power supply
combination for plug-in modules. It can house twelve
single-width modular instruments or a mixture of other sizes
equivalent to twelve singles. Units that can be installed
include BNC's modular digital delay generators, trigger
pulse amplifiers, pulse generators, programming interfaces
and the instruments of other companies that are designed to
NIM standards.
The TB-4 is a two-piece assembly consisting of a sturdy
bin for containing the modules and a removable heavy duty
power supply that is mounted on the back of the bin. DC
voltages available to power installed modules are: ±6 V, ±12
V, ±24 V. AC 117 V power for modules that may require it is
also provided. The supply conforms to the specifications of
AEC report TID-20893 (Rev. 3).
The bin is constructed with nickel plated high strength
top and bottom welded wire frame assemblies that ensure easy
installation, accurate fit and free ventilation of the
modules. The TB-4 fits a standard nineteen-inch relay rack
or it can be used as the container of a compact system at
the bench. A narrow panel on the front has the master power
switch, test jacks for the six DC voltages and an overheat
warning lamp.
BNC-blue painted blank panels are available to cover
unused module cavities. The part numbers are: Single-width
P/N 6823, Double-width P/N 6824, Triple-width P/N 6826.
Empty modules in various standard sizes are also available
for those who wish to build and install their own special or
auxiliary instrumentation in convenient plug-in form.
Consult the factory for source information on module kits.
|
DC OUTPUT VOLTAGES
±6 V, 8 A each; ±12 V, 2 A each; ±24 V, 1 A each. Total combined DC output not
to exceed 132 VA. DC Voltages have a ±2% adjustment range.
REGULATION
Less than ±0.1% for ±12 V and ±24 V, ±0.2% for ± 6 V over line voltage variation
of ±10% or ±100% changes in rated load.
RIPPLE AND NOISE
Less than 3 mV peak-to-peak as observed on a 50 MHz bandwidth scope.
RECOVERY TIME AND STABILITY
Recovery: Less than 100 µs return with regulation limits for 10% to 100 %
step-change in rated load.
Stability: After 1 hr. warmup ±0.5% for 6 months at constant load, line and
ambient.
CIRCUIT PROTECTION
Fully protected against short circuits or overloads by foldback circuitry.
THERMAL PROTECTION
Thermal warning light activates if supply temperature exceeds 60°C. Power is
interrupted if interior temperature exceeds safe limits.
MODULE CONNECTORS
AMP 202516-3 (or equiv.) connectors wired to DC output busses, high quality
ground, power return ground and 115 VAC.
DIMINSIONS
19" W x 8.70" H x 18" D (219x295x374 mm).
WEIGHT
33 lbs. net (15 kg); 42 lbs. shipping (19 kg).
AMBIENT
0°C to 50°C (32°F to 122°F).
POWER
115/230 V, ±10%, 50/60 Hz. |
