Radyne RCS11, Инструкция по установке и эксплуатации

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RCS11 1:1 Redundancy Switch Operation
TM061 Rev. 1.3 Page 3-1
Section 3 - Operation
3.1 Operating Procedures
The RCS11 is designed to require minimal operator intervention and control during normal operation. After
initial setup, the unit should operate in a relatively ‘transparent’ manner, providing trouble-free backup of the
online modems. The scope of this section, therefore, is limited to instruction on the various modes of
control available to the operator. Refer to Figure 3-1 for the RCS11 Front Panel Controls and Indicators
and Table 3-1 for a description of the Controls and Indicators.
3.1.1 Configuring the RCS11 (Refer to Figure 3-1)
The purpose of the ‘ENABLE’ pushbutton on the front panel is to reduce the risk of accidentally changing
the operating modes of the RCS11 by accidentally bumping any one of the front panel pushbuttons. For
any one of the front panel pushbuttons to function, the ‘ENABLE’ pushbutton must be depressed
simultaneously with the desired function pushbutton.
Depress the ‘ENABLE’ pushbutton. This pushbutton must be depressed to allow the operator to proceed
with any other configurations. The ‘MANUAL’ LED should illuminate and the FAULT indicator may
momentarily flash. Under the MOD region of the front panel, depress ‘SELECT A’ to bring Modem ‘A’
modulator online. The green LED should illuminate. Under the DEMOD region of the front panel, depress
‘SELECT A’ to bring modem ‘A’ demodulator online. The Green LED should illuminate. The RCS11 should
3.1.1.1 Manual Mode
To manually select which MOD or DEMOD is to be placed online, simultaneously depress the ‘ENABLE’
pushbutton and the appropriate MOD or DEMOD ‘SELECT’ pushbutton. When a MOD or DEMOD selection
is made, the RCS11 enters Manual Mode to carry out the selection, and will not respond to either modem’s
MOD or DEMOD Fault signals until placed back into Auto Mode.
3.1.1.2 Auto Mode
To enable automatic backup in the event of a MOD or DEMOD failure, the RCS11 must be placed into the
Auto Mode. First, select which MOD and DEMOD are to be active by following the ‘Manual Mode’
procedure in the previous paragraph. To enter the Auto Mode, simultaneously depress the ‘ENABLE’
pushbutton and the ‘SELECT AUTO’ pushbutton. The RCS11 will then enter into Auto Mode with the last
selections made in Manual Mode. In the Auto Mode, the decision to switch from one MOD or DEMOD to
another is made automatically by monitoring the Fault signals from each modem.
3.1.1.3 Power-Up Defaults
During power-Up, the RCS11 initializes itself to the last mode set by the operator on the front panel
pushbuttons. For example, if the operator desires the RCS11 to operate in the Auto Mode, with both Mod
and Demod set to Modem B, by placing the RCS11 into this condition using the front panel pushbuttons, the
settings are stored into non-volatile memory. If MOD B was to fail, and the RCS11 was to backup with
MOD A, the new backup setting would not be saved. If the power was to be removed and restored, the
RCS11 would again power-up in AUTO MODE, with both MOD and DEMOD set to Modem B.