ZXMSG 5200 (V2.0) Technical Manual
42 Confidential and Proprietary Information of ZTE CORPORATION
feed provides -48 V power via a filter TBF, and then provides
corresponding power via the DC/DC converting module or the ringing
current module.
2. Panel diagram
Figure 12 shows the panel of POWER H.
F
IGU R E
12
POWER
H
P
ANE L
3. LED Indicators
The POWER H has six indicators on the panel: ALM indicator, -48 V
indicator, RING indicator, +5 V indicator, +5 VJ indicator and –5 V
indicator. When the POWER H runs properly, the ALM is off and the
RING flashes, while indicators -48 V, +5 V, +5 VJ and -5 V are all on.
4. I/O Characteristics
Input nominal voltage: -48 V
Input voltage range: -60 V DC ~ -38 V DC
Maximum input wave peak-peak value: 250 mV
Maximum peak value of input starting current: Within 10 times of the
normal working current. Table 8 shows output voltage, stability,
maximum working current and peak voltage.
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