C&H Technologies EM405-8, Руководство пользователя

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3
CHARACTERISTICS
Limit
Parameter Conditions Min Typ. Max Units
Data Transfers
Throughput Ethernet – block read
1, 3
Ethernet – block write
2, 3
400K
300K 450K
350K bytes/sec
bytes/sec
AC Input Power (IEC 320-C13)
Level AC 85 265 V
Power Consumption for full M-Module support 100 W
DC Input Power (DIN Connector)
Level DC 36 48 75 V
Power Consumption for full M-Module support 100 W
Power Consumption
Carrier (internal logic) -0001 with trigger support
-0002 without trigger support 25
22 W
W
Triggers (-0001 version only)
Maximum Frequency 40 MHz
Minimum Pulse Width Driven Mode
≤
10 meter connection segment
≤
20 meter connection segment
Wired-OR Mode
≤
10 meter connection segment
≤
20 meter connection segment
10
20
20
40
ns
ns
ns
ns
Intermodule Trigger Delay M-module to M-Module 21 27 ns
Intermodule Skew M-module to M-Module 3 6 ns
TTL Trigger Delay External BNC connector to M-Module
M-module to external BNC connector 22
24 28
30 ns
ns
LVDS Trigger Delay External connector to M-Module
M-module to external connector 20
20 26
26 ns
ns
BNC Output Level into a high impedance load 3.8 5.0 5.4 V
BNC Output Impedance 50

BNC Input Level TLVL = 0
4
TLVL = 1
2.5
1.4 V
V
BNC Input Impedance TIMP = 0
4
TIMP = 1
900K 1M
50


LVDS Differential Output Magnitude 480 650 mV
LVDS Differential Input
(Type 1 receiver) Threshold, positive-going
Threshold, negative-going
Hysteresis
-50
25
50 mV
mV
mV
Cooling
Temperature Rise 20 °C
Temperature Accuracy -1 +1 °C
Notes:
1. Several milliseconds of overhead and latency occur on each command issued. The effect of this
overhead and latency is reduced by transferring large amounts of data with a single block read
command. Maximum read throughput is achieved by reading >4K bytes of data from a FIFO type
register on an M-Module using the Block Read command. Host software may vary and can limit the
maximum throughput.
2. The maximum number of bytes that can be written in a single block write command is 1024.
3. Ethernet is a non-deterministic communications interface. Realized throughput may be significantly
degraded by network activity or other factors that may affect network performance.
4. TLVL and TIMP refer to register bits in the TTL Trigger Control register. Refer to section 4.6.5.
C&H Technologies, Inc. <> 445 Round Rock West Drive <> Round Rock, Texas 78681 <> www.chtech.com