Sony CCU-TX7 Service Manual Download

Page: 18 / 80

1-10

CCU-TX7 (E)/V1

INTERCOM (intercom system select) switches

Use these switches to select the type of external
intercom system to be used. Set the upper switch to
4W if no external intercom is connected.
If you set the upper switch to RTS, select either RTS
or CLEARCOM with the lower switch.

CT-181 board

R TALLY (red tally) and G TALLY (green tally)
switches

Set these switches to CONTACT (to use contact
signals) or POWER (to use voltage signals) for the red
tally and green tally. If you set them to POWER, select
either DC24V or TTL.

MIC GAIN adjustment screws

Use these screws to adjust the microphone amplifier
gain for the camera adaptor. The standard level
(NORM) is 0 dB, and the gain setting can be adjusted
to any of 16 levels from –12 dB (MIX) to +12 dB.
Adjust the gain so that, on the AA-90 board, the green
and orange LEVEL IND indicators are lit while the
audio level is normal with the red indicator lighting
only when the maximum audio level is reached. If the
red indicator does not light at all, or if the orange
indicator lights only intermittently, raise the gain level.
If the red indicator stays lit, lower the gain.

CT-181

R TALLY

G TALLY

MIC GAIN

PANEL

CONTACT

POWER

DC24V

TTL

CONTACT

POWER

REMOTE

LOCAL

CONTROL MODE

NORMAL

SLAVE

DC24V

NORM

MIN
MAX

NORM

MIN
MAX

CH1

CH2

TTL

R TALLY and G TALLY
switches

MIC GAIN adjustment screws

PANEL switch

CONTROL MODE switch

PANEL (panel control) switch

When the COU-TX7 Camera Operation Unit has been
installed on this unit while the RCP-TX7 Remote
Control Panel is also connected to the unit, use this
switch to select the camera operation unit or the
remote control panel as the control device.

REMOTE: Enables the video camera to be

controlled from the remote control panel.

LOCAL: Disables remote control (via the remote

control panel) of the video camera.

CONTROL MODE switch

If another CCU-TX7/TX7P unit is connected to this
unit, use this switch to select whether the video camera
is controlled directly from this unit or from the other
CCU-TX7/TX7P unit.

NORMAL: Video camera is controlled directly from

this unit.

SLAVE: Video camera is controlled from other

CCU-TX7/TX7P unit.

This switch does not operate when the RCP-TX7
Remote Control Panel is connected to this unit. In this
case, use the remote control panel to make the above
selection.

Location and Function of Parts

ES-20 board

H PHASE (horizontal phase) adjustment screw

Turn this screw with a screwdriver to adjust the
horizontal phase alignment between an external sync
signal and the output signal.

SC PHASE (subcarrier phase setting) switch
and fine-tuning screw

Use this switch and screw to adjust the output signal
subcarrier phase with respect to an external sync
signal. After setting the SC PHASE switch, turn the
fine-tuning screw to make fine adjustments.

OUTPUT 1 and OUTPUT 2 switches

Use these switches to select the type of signal to be
output via the OUTPUT connectors (R/R–Y/C, G/Y/Y,
B/B–Y). The OUTPUT 1 switch corresponds to the
three OUTPUT connectors on the left side and the
OUTPUT 2 switch to the three OUTPUT connectors
on the right side.

R/G/B: Selects output of R, G, and B signals from

the OUTPUT connectors.

Y/R–Y/B–Y: Selects output of R–Y, Y, and B–Y

component signals from the OUTPUT connectors.

Y/C: Selects output of Y and C signals from the

OUTPUT connectors.

AA-90 board

PGM IN (program audio input level setting)
switch

Use this switch to set the program audio input level to
0 dB or –20 dB.

MIC 1 LEVEL and MIC 2 LEVEL switches

Use these switches to set the microphone output levels
for channel 1 (CH1) and channel 2 (CH2) to 0 dB or
–20 dB.

MIC TEST switch

Set this switch to CH1 or CH2 to mix that channel’s
microphone signals from the video camera with the
program audio, so that the mixed input can be
monitored via a headset connected to this unit or a
camera adaptor. This switch is used to check the
microphone signals.

LEVEL IND (microphone level) indicators

The transfer levels for microphone signals (CH1 and
CH2) are indicated by colors. The upper indicator
corresponds to channel 1 (CH1) and the lower one to
channel 2 (CH2).

Green: Approximately –12 dB to 0 dB
Orange: Approximately 0 dB to +12 dB
Red: Approxi12 dB or higher

Use these indicators along with the MIC TEST switch
to check microphone signal lines or as a adjustment
indicator when adjusting the microphone gain with a
MIC GAIN adjustment screw on the CT-181 board.

ES-20

PHASE

OUTPUT 1

OUTPUT 2

180

R/G/B

Y/R-Y/B-Y

Y/C

R/G/B

Y/R-Y/B-Y

Y/C

H PHASE adjustment screw