Patton electronic MODEL 1075 There is no power switch on the Model 1075. You turn it off by

C.If the BER test equipment indicates a fault, and the Local Analog Loopback test was successful for both Model 1075s, you may have a problem with the twisted pair line between the modems. You should then check the twisted pair line for proper connections and continuity.

5.2.3How to Use the V.52 BER Test Independently

The V.52 BER test can be used independently of the V.54 loopback tests. This requires two operators: one to initiate and monitor the test at the local Model 1075, and one at the remote Model 1075. To use the V.52 BER test by itself, both operators should simultaneously follow these steps:

1.Locate the 511/511E toggle switch on the front panel of the 1075 and move it UP. This activates the V.52 BER test mode and transmits a 511 test pattern to the other unit. If any errors are present, the receiving modem’s red Error LED will blink sporadically. For this test to work, make sure the 511 switch on both Model 1075s is on.

2.If the test indicates no errors are present, move the V.52 toggle switch DOWN, activating the 511/E test with errors present. If the test is working properly, the receiving modem's red Error LED will blink regularly. A successful 511/E test will confirm that the link is in place, and that the Model 1075’s built in 511 generator and detector are working properly.

5.3POWER-DOWN

There is no power switch on the Model 1075. You turn it off by

unplugging the AC power adapter from the wall.

APPENDIX A

PATTON MODEL 1075 SPECIFICATIONS

Approvals:	CE European Directives
DTE/DCE I/F:	X.21 DB15F DCE or DTE, EIA RS-422
Compatibility:	Compliant
	1035, 1045 , 1075, 1080A, 1090 series units
Transmission
Format:	Synchronous
Transmission	Unconditioned twisted pair 19 - 26 AWG
Line Interface:	Externally accessible RJ-45 (RJ-11
Clock	Optional)
	Internal, External and Network (Receive
Distance:	Recover)
	Up to 6 miles (9.7km)
Interfaces:	CCITT/ITU X.21
Data Rates:	32, 56 and 64 Kbps (switch selectable)
Isolation:	1500V RMS via isolation transformers
Surge Protection:	IEC-801-S, Level 2, 1kV
Carrier Control	Constantly on or Controlled by “Control”
	from DTE device (DCE mode) or
Connectors:	“Indication” from DCE device (DTE mode)
	DB-15 female
Power Supply:	RJ-11 or RJ-45 on line side
	9V DC wall-mount transformer, 200mA
Temperature
Range:	0-60°C (32-140°F)
Altitude:	0-15,000 feet
Humidity:	5 to 95% noncondensing
Dimensions:	1.54H x4.1”W x 3.7”D
Power Options:	120 VAC 50/60Hz, external transformer;
Weight:	230 VAC 50/60Hz, external transformer
	2.5 lbs. (1.1 Kg)

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