DRAKE DUC864, Руководство пользователя, Страница: 6 / 8

SPECIFICATIONS 7 2 FRONT PANEL CONTROLS and INDICATORS
Specifications subject to change without notice or obligation.
For example: For example:
Setting for CATV Setting for CATV
channel "125"- channel "25"-
F1
F2
F3
F4
F1 - POWER/ERROR Indicator
Lights when the unit is connected to the
required source of DC power via the rear panel
DC INPUT connector. A flashing condition
indicates an invalid channel setting or other
conditions that would cause the unit to operate
on an invalid channel. The RF output is
switched off for flashing (ERROR) conditions.
F2 - Channel Number Switch
Sets the desired operating channel for standard
CATV or Broadcast channel plans. See also
Item F3 which sets the type of channel (CATV
or Broadcast TV) and sets the leading “1” for
CATV channels 100 through 135.
F3 - Channel Mode Switch
Sets the type of channel, CATV or Broadcast.
The CATV +100 mode sets a leading “1” for
CATV channels 100 through 135.
2 5
DUC864
GAIN
PWR/
ERROR
CATV
+100
BC
TV
CATV
F4 - GAIN Control
This control sets the RF output level. The full
clockwise setting is a minimum output of
+45 dBmV.
44 MHz.
+30 dBmV, ±2 dB.
75 Ohms, return loss >20 dB.
54 to 864 MHz;
CATV channels 02 through 135,
Broadcast TV channels 02 through 69.
+45 dBmV minimum, 15 dB adjustment range.
-73 dBc (6 MHz bandwidth) @ +45 dBmV output level.
-63 dB (6 MHz bandwidth) @ +45 dBmV output level.
-60 dBc @ +45 dBmV output level.
75 Ohms, return loss >10 dB typical.
±0.4 dB maximum.
-95 dBc @ 10 kHz offset, -70 dBc @ 1 kHz offset.
±5 ppm.
30 dB minimum (unequalized),
38 dB minimum (with blind equalizer).
+12 V ±5% at 300 mA.
+5 V ±5% at 350.
0 0 C to +50 0 C, ambient.
1” W x 3.5” H x 9.25" D
14.5 oz.
IF INPUT
Frequency:
Input Level:
Input Impedance:
OUTPUT
Frequency Range:
Output level:
Broadband Noise:
In Channel C/N:
Spurious Outputs (5 MHz to 900 MHz):
Output Impedance:
Amplitude Flatness Over
6 MHz Channel:
SSB Phase Noise:
Frequency Stability:
MER:
GENERAL
DC Power Input:
Operation Temperature:
Size:
Weight:
2 5 2 5
CATV
+100
CATV CATV
+100
CATV BC
TV TV
BC