| 摘要 |
A GSM-R (Global System for Mobile Communications Railway) radio test unit includes a base unit 1, a radio test main unit 2, a driver control panel 3, a handset 4 and a UPS. Two slide rails 5 are provided to receive a GSM-R radio (see figure 1, not shown) and two levers 6, 7 are used to slide in and out the radio under test. 24V or 48V DC power may be supplied to the radio and selected via switch 21 (figure 3, not shown) and indicated via LEDs 8, 9. The test unit has a universal AC power input of 85V to 264V and input frequency 47-63 Hz. An external loudspeaker (figure 1) is tested by connecting to a loudspeaker socket (25, figure 3) through test leads provided with banana plug at one end and fast-on crimp socket at other end. Radios with or without UPS may be tested.
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