Tx If Mon (J6); Ref Monitor 10 Mhz (J7); Clock (J8); Data Interface (J9) - Radyne DMD2401 LB Installation And Operation Manual

DMD2401 LB/ST L-Band Satellite Modem and ODU Driver

5.3.6 TX IF MON (J6)

The Transmit IF Monitor Port (J6) is used for injecting an external reference frequency into the
modem. The DMD2401 LB/ST Master Oscillator is locked to this source. All internally
generated frequencies within the modem will attain the stability of the applied external reference.
The external reference must meet the following parameters:
Frequency:
Amplitude:
Type:
Stability:

5.3.7 REF MONITOR 10 MHz (J7)

The Reference Monitor Port (J7) is used for injecting an external reference frequency into the
modem. The DMD2401 LB/ST Master Oscillator is locked to this source. All internally
generated frequencies within the modem will attain the stability of the applied external reference.
The external reference must meet the following parameters:
Frequency:
Amplitude:
Type: Sinewave or Squarewave

5.3.8 CLOCK (J8)

The External Clock Port (J8) is used for injecting an external data clock into the modem. The
data symbol clocks may then be selected to be locked to this source. The external clock must
meet the following requirements:
Frequency:
Amplitude:
Type:

5.3.9 DATA INTERFACE (J9)

The Data Interface Port (J9) is used for Synchronous Data Interface and uses RS-422, RS-232,
and V.35 Interfaces. It is a 37-Pin Female Connector. Refer to Table 5-6 for the connector
pinouts.

5.3.10 ASYNC (J10)

The Asynchronous Data (J10) is the data interface for asynchronous data. It uses RS-232, and
RS-485 Interfaces and is a 9-Pin Female "D" Connector. Refer to Table 5-9 for the connector
pinouts.
TM075 - Rev. 1.3
10 MHz, 9 MHz, 5 MHz, 2.048 MHz or 1.024 MHz.
0.2 Vp-p to 5 Vp-p
Sinewave or Squarewave
-7
1 x 10 or Better
10 MHz, 9 MHz, 5 MHz, 2.048 MHz or 1.024 MHz.
0.2 Vp-p to 5 Vp-p
9600 Hz to 2.048 MHz
0.2 Vp-p to 5 Vp-p
Sinewave or Squarewave
Electrical Interfaces
5-9