Oki B721 Maintenance Manual

Oki Data CONFIDENTIAL
45487001TH Rev.1
4-8 /
4. Maintenance menus
Item Settings Functions
Admin Setup Network
setup
FTP Enable
Disable
Sets Enable/Disable of FTP.
[Conditions for display]
"Enable" is selected in "TCP/IP."
IPSec Enable
Disable
Displayed only when Enable is selected
for TCP/IP and allows a change only to
Disable.
(It is because many settings besides this
setting are required to enable IPSec.
Therefore, it is allowed to be cleared only
for restoration.)
SNMP Enable
Disable
Sets SNMP of FTP.
[Conditions for display]
"Enable" is selected in "TCP/IP".
Network
Scale
Normal
Small
When Normal is selected, it can work
effectively even when it is connected to
HUB that has a spanning tree feature.
However, printer start up time gets longer
when computers are connected with two
or three small LANs.
When Small is selected, computers can
cover from two or three small LANs to a
large LAN, but it may not work effectively
when it is connected to HUB with a
spanning tree feature.
Gigabit
Network
Enable
Disable
Sets Enable/Disable of Gigabit network.
When this is Enabled, and the network
is working on 1000Base-T Full/Half, the
printer will not enter sleep mode.
Hub Link
Setting
Auto Negotiate
100Base-TX
Full
100Base-TX
Half
10Base-T Full
10Base-T Half
Sets a method to link with HUB.
Item Settings Functions
Admin Setup Network
setup
TCP ACK Type1
Type2
Sets a type of TCP Acknowledgment.
When Type1 is set, the printer replies to
every packet.
When Type2 is set, the printer replies to
plural packets in a mass.
When printing comes to take time by the
setting of the hub, choosing Type2 may
improve the matter.
Usually, setting Type1 hasn't any problem.
[Conditions for display]
"Enable" is selected in "TCP/IP."
Factory
Defaults?
Execute Specifies whether to initialize the network
menu or not.
Parallel
Setup
Parallel Enable
Disable
Sets Enable/Disable of Centro I/F.
When this is Enabled, the printer will not
enter sleep mode.
Bi-
Direction
Enable
Disable
Sets Enable/Disable of bi-directional
Centro.
ECP
Enable
Disable
Sets Enable/Disable of ECP mode.
Ack Width
Narrow
Medium
Wide
Sets ACK width for compatible reception.
NARROW = 0.5μs
MEDIUM = 1.0μs
WIDE = 3.0μs
Ack/Busy
Timing
Ack in Busy
Ack while Busy
Sets the order to output the BUSY
signal and the ACK signal for compatible
reception.
ACK IN BUSY: BUSY=LOW-> The end of
ACK pulse
ACK WHILE BUSY: BUSY=LOW -> The
center of ACK pulse
I-Prime
3 microseconds
50 microseconds
Disable
Sets time to enable/disable the I-PRIME
signal.
3 MICRO SEC: Enabled with the 3μs nInit
signal.
50 MICRO SEC: Enabled with the 50μs
nInit signal.
When I-Prime is received when enabled,
only Centro driver is initialized.

Oki B721 Specifications

General

Print Technology	LED
Resolution	1200 x 1200 dpi
Processor	533 MHz
Memory	256 MB
Connectivity	USB, Ethernet
Duplex Printing	Standard