11
4.3 AC POWER CONNECTION
The Model 2042 uses a 5VDC, 2A universal input, power supply
that is equipped with a male IEC-320 power entry connector and sup-
ports a voltage range of 100-240VAC. This transformer connects to
the Model 2042 by means of a cannon jack on the rear panel. There
are a variety of domestic and international power cords available for
the power entry (See Appendix B). The Model 2042 is powered-up as
soon as it is plugged into an AC outlet–there is no power switch.
4.4 DC POWER CONNECTION
The 36-60 VDC DC to DC adapter is supplied with the DC version
of the Model 2042. The black and red leads plug into a DC source
(nominal 48VDC) and the barrel power connector plugs into the barrel
power supply jack on the 2042
.
12
5.0 OPERATION
Once you have configured the Model 2042 properly (see Section
3.0) and have correctly connected DTE, DCE and power (see Section
4.0), you are ready to operate the unit. This section describes the LED
status monitors and loopback test modes.
5.1 BACK PANEL LED STATUS MONITORS
The Model 2042 features two LEDs that are located on the back
panel. Figure 9 below shows the positions of the LEDs. Following
Figure 9 is a description of each LED.
Status
Glows green to indicate that both DTR (from the DTE
device) and DSR (from the DCE device) are active.
This LED will not be illuminated whenever one of the
two signals are inactive.
Test Mode
Glows green to indicate that either one or both of the
test modes are active (See Section 5.2 for a description
of the test modes).
5.2 TEST MODES
The Model 2042 supports two loopback modes that may be used
to evaluate the condition of the communication links. These modes,
(Local Loopback (LL) and Remote Loopback (RL), are always initiated
by the signals on the DTE device (See Figure 10). This section
describes both loopback modes.
Figure 9. Model 2042 Rear Panel
External Power Jack
HSSI Cable
Test Mode LED
Status LED
NOTE:
HSSI supports a third loopback mode: Local Digital
Loopback (LDL). However, RS-530 does not support this mode.
In order to use LDL, the RS-530 device must be programmed to
respond according the the HSSI specification for LDL (See
TIA/EIA-613, Section 6.2.1 Local Digital Loopback (Loop A).
To Power
Supply Jack
To -48VDC
Source
-Vin
+Vin
SWITCHING POWER SUPPL
Y
MODEL
: SYD1
106-0505
INPUT
: 36-60V 0.2A
MAX
OUTPUT
: +5V 1.0A
OUTPUT
POWER : 5W MAX
S/N
: G01234567890
MADE IN CHINA
BY
SUNNY
Black lead (-V)
Red lead (+V)
Barrel power connector
