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1.2.2 Physical Characteristics
Model F22XX modems measure 7 x 1 x 11 in. WxHxL (17.8 x 2.5 x 27.9 cm). They are
designed to be mounted in VERSITRON’s FOM II Series HF enclosures and chassis (see Table
1). Model HF-1 (single card) desktop enclosures are available for standalone applications.
Standard 19" rack mountable options include models HF-2SS (2-slot) and HF-20A (20-slot)
chassis.
Each
modem installed in models HF-1 or HF-2SS requires its own VAC to VDC power
adapter. Each power adapter uses the one-pin connector on the back of the modem for power
input. (Customer provided power may be supplied to the modem using the same one-pin
connector.) When installed into the HF-20A chassis model AC300WR power supply is used to
provide power to the chassis and to the modems. Power is provided from the AC300WR power
supply to the HF-20A chassis via model HF-CA3 power interface cable where it is then
distributed to
any
FOM II Series modem installed in the chassis. Power redundany is included
with the AC300WR power supply with two separate AC input cables provided for power input
from separate VAC sources. The RS-530 copper interface is a female DB25 connector and is
located on the back of the modem. The fiber optic interface, also located on the back of the
modem, consists of two ST connectors (one transmit; one receive). Model F22XX Modems
have five indicator LEDs: power on (PWR), loop indicator (LOOP), transmit data present (TX),
receive data present (RX), and loopback mode indicator (LB).
FIGURE 1. OVERALL VIEW, F22XX MODEMS
