Page 2 of 3 CBG-2655A
AUDIO CONFIGURATIONS:
The audio outputs provide a 1 kHz Tone. The connector labeled AUDIO 1 provides a continuous 1
kHz tone. The connector labeled AUDIO 2 provides a 1 kHz tone at a 50% duty cycle operating at one
(1) cycle per second. Equipment receiving the audio signal must be evaluated to determine if it is
balanced or unbalanced. After this determination has been made, refer to the drawings provided in
Figure 2 to select the proper audio configuration. Audio output impedance is 600
?
, ideally suited for a
balanced configuration. The output level is factory set for a balanced configuration, this assumes both
outputs are terminated into a 600
?
load.
Balanced Out
Unbalanced Out
Audio 1 or 2 Output
Audio 1 or 2 Output
FIGURE 2
ADJUSTMENTS:
YC balance, DC offset, Video gain, and Audio level are all set for optimum performance by Sigma
Electronics. If necessary, these parameters may be readjusted via the controls listed below.
R20: ..........YC Balance. Luminance signal to Chroma signal balance.
R24: ..........DC Offset adjustment.
R28: ..........Video Gain. Factory adjusted for 1 Vp-p-P output
R59: ..........Audio level. Optimized by factory setup for balanced configuration.
SPECIFICATIONS:
VIDEO:
OUTPUT: ................................
(3) EIA Split-field Color Bars with Reverse Bars, Pluge
Signal and 100% White Signal
VECTOR ACCURACY: ...........
Within
?
2.5
?
and
?
2.5 IRE, (Small Boxes on
vectorscope graticule).
TIMING: ..................................
per RS-170A
RESIDUAL SUBCARRIER: .....
< 1 IRE p-p
OVERSHOOT: ........................
< 2 IRE
TILT: .......................................
< 1 IRE line or field
CONNECTORS: .....................
3, BNC
AUDIO:
OUTPUTS: .............................
1 stereo tone, balanced
FREQUENCY: ........................
1 kHz
?
10%, 1 channel continuous,
1 channel pulsed 50% duty cycle, 1 sec. pulse rate
LEVEL: ...................................
0 dBm (600
?
),
?
0.5dB
IMPEDANCE: .........................
600
?
CONNECTORS: .....................
2 each, three-pin screw terminal
Audio Out
+
C
-
+
C
-
CBG-2155A
Audio Out
+
C
-
+
C
Open
CBG-2155A
6
0
0
?
