對于那些要求輸入掃描和輸出掃描之間有固定的時(shí)間間隔或需要在接收到輸出數(shù)據(jù)之后對輸入數(shù)據(jù)作–些設(shè)定的應(yīng)用程序，Constant窗口模式是-一個(gè)理想的選擇。Constant窗口定時(shí)器設(shè)定值范圍為0~255(毫秒)。Constant窗口定時(shí)器數(shù)值可以使用編程軟件設(shè)定，也可以通過用戶程序使用服務(wù)請求功能3、4、5來設(shè)定下表描述了

4 MB PCMCIA SATA Flash Memory Mecamira PC Card

Optrex DMF-50840 5.7-inch Mono LCD Display Screen Panel

Telebyte Model 366M RS232 to RS485 Interface Converter

InterlinkBT JBBS-57-E401 Bus Stop Passive Multiport Jun

Lexmark IBM Keyboard PS/2 PS2 71G4644 FRU 71G4646 Termi

Teac 1.2MB Internal Floppy Drive 5.25″ 5 1/4 FD-55GFR

Compaq 35/70 GB DLT Internal Tape Drive SCSI TH6AE-HK 2

Cisco WS-X4232-GB-RJ 10/100 Base-TX 1000 Base-X Switch

Black Box SW932A-R2 Keyboard Monitor Switch 4-Port NIB

Festo ZYZ-63-150 Hydraulic & Pneumatic Feeding Unit ZYZ

National Instruments 181638-01B GPIB Adapter Connector

Teac 1.2MB Internal Floppy Drive 5.25″ 5 1/4 Vintage

Lot of 3 Integrated Power Designs SRW-65-4004/400?6 Powe

Glidepoint Cirque GP160C-0220 Touchpad Mouse Pad Serial

NETGEAR ProSafe 16 Port Base 10/100Mbps Switch FS116 Fa

Emerging Display Technologies Touch LCD 5.6″ inch EDT E

Emerging Display Technologies Touch LCD 5.6″ inch EDT E

Connect Tech IOB08DB9V1 8-Port DB9 Male Board Connector

Lambda LJS-11-5-OV 5VDC Power Supply Hybrid Overvltage

AT&T/Lucent/Ava?ya 1145B1 Power Unit Supply PN:6064533 C