2
DH-PFM88X owns TDMA operating system and integrates with TDMA technology, which effectively
solves hidden node problem that perplexes large point-to-multipoint WLAN. With advanced rate control
algorithm, adapt to channel quality changes quickly while keeping stable rate as far as possible, so it is
very suitable for remote wireless transmission. By solving remote point-to-multipoint access issue,
access quantity increases, rate allocation becomes more uniform, and it can be applied to operator and
wireless surveillance fields.
As a wireless equipment operating system redeveloped on the basis of kernel, TDMA is more suitable
for wireless video surveillance data transmission.
2. Integrate Watchdog
DH-PFM88X integrates hardware watchdog to monitor system operation all the time. In case of
abnormal system operation, watchdog resets and reboots the system, so as to ensure its stability
effectively and reduce manual operation.
3. Ping Watchdog Function Carries out Real-time Detection of Link
Ping Watchdog function detects whether the link fails or not, and reboots the equipment immediately
when the link fails, so as to ensure link stability.
4. A Lot of Frequency is Provided to the User
At present, most wireless products work at standard 802.11 5.8G frequency, but standard 5.8G
frequency band is relatively scarce. When 5.8G equipment is used a lot, it is easily interfered.
DH-PFM88X increases support for frequency near 5.8G and expands working frequency to
4920MHz-6100MHz within allowed range. Since some frequencies face less interference, clients and
access points in these frequency bands work better than other frequency bands. DH-PFM88X supports
for non-standard frequency band has reduced external interference to wireless product, enhanced its
throughput rate effectively and satisfied users’ requirements for relatively high bandwidth.
Before using these non-standard frequency bands, please confirm whether they conform to local laws,
regulations and radio management stipulations.
5. Adapt to Complicated and Changing Working Environment