Comtech EF Data SMS-301 - Manual (Page 21)

SMS-301 Redundancy Switch Introduction
Rev. 3 1–7
Table 1-3. 1:1 Switch Specifications (Continued)
Parameters
Controlled/Monitored Operation mode: Automatic or manual
Switching mode: Independent or dependent mod/demod
Modulator on-line delay
Demodulator on-line delay
Modem on-line:
A or B (dependent mode)
Modulator on-line: A or B (independent mode)
Demodulator on-line: A or B (independent mode)
Remote configuration (local only): EIA-232 or EIA-485, address, baud,
parity, bits per word
Remote mode (Switch)
Clear stored faults
Current faults
Stored faults
Switch status
Firmware
Time/date
Equipment type
Store/recall multiple switch configurations
Remote access to modulator/demodulator status
Modem configuration copy to opposite modem
Configuration Retention Will maintain configuration for at least one year without prime power
Switch to Modem
Communications Interface type: EIA-485 (2-wire)
Connector: 9-pin D-sub
Protocol: Addressable (see remote control protocol, Appendix A)
Prime Power 85 to 264 VAC, 47 to 63 Hz, 30W (redundant inputs)
(Optional) 42 to 56 VDC, 40W (redundant inputs)
Size 19 W x 15.2 D x 1.75 H inches (1 RU)
(48.3 x 39 x 4.4 cm)
Weight < 9 lbs (4 kg)
Operating Temperature 0 ° to 50° C (32° to 122° F)
Humidity < 95%, non-condensing
EMI CE Mark Certification