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SPG 422 Service Manual (B034000 and above)
1–1
Specifications
This section contains specifications and signal illustrations for the SPG 422.
The items listed in the following tables describe the performance of the SPG 422
Component Digital Sync Generator. Performance Requirements are generally
quantitative and can be tested by a Performance Verification procedure contained
in the Service Section of this manual.
Supplemental Information is valuable data pertaining to the operation and output
capabilities of this instrument. Only a few items listed in this category are
testable in the Performance Verification procedure.
Performance Conditions – The requirements listed in the electrical specification
portion of these specifications apply over an ambient temperature range of 0
°
C
to +40
°
C. The rated accuracies are valid when the instrument is calibrated at an
ambient temperature range of +20
°
C to +30
°
C, after a warm-up time of 20
minutes. Test equipment used to verify Performance Requirements must be
calibrated and working within the limits specified under the Equipment Required
list.
These instruments are intended to operate from an AC power source that will not
apply more than 250 V
RMS
between the supply conductors or either supply
conductor and ground. A protective ground connection by way of the grounding
conductor is essential for safe operation.
Environmental specifications are listed toward the back of the following tables.
In addition a list of appropriate safety and electromagnetic interference (EMI)
standards also can be found there.
Product Description
The SPG 422 is a component digital sync pulse generator (SPG). The SPG 422
provides basic setup and timing signals for component digital tape recorders and
processing equipment systems. It provides audio tones and a few simple video
test signals needed to adjust equipment and stripe video tapes. Analog black
signals are the timing reference signals of choice and the SPG 422 provides six
analog black signals each with separate timing controls. Because the SPG 422
has good frequency stability, it can perform as a stand-alone generator or genlock
to an external PAL or NTSC signal.
Some installations use 525/59.94 and 625/50 component signals simultaneously
or switch between standards regularly. Dual-standard operation is possible with
the SPG 422 architecture. Also important for dual-standard operation, is the
ability of the SPG 422 to output audio tones locked to the video standard(s) in
use.
Summary of Contents for SPG 422
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