8 (14)

DA6180B.002

5 May, 2011

TYPICAL APPLICATION (Continued)

Table 4. Antenna Suppliers and Antenna Types for Time Signal Application

Supplier

Antenna Type

Dimensions

Web Link

Micro Analog

Systems Oy

A10X60-77.5K222PY

A10X100-77.5K222PY

A3.5X4X15-7.87MH

A2X3X21-0.92MH

A3.75X3.75X23.6-0.92MH

ø 10 x 60 mm

ø 10 x 100 mm

3.5 x 4 x 15 mm

2 x 3 x 21 mm

3.75x3.75x23 mm

http://www.mas-

oy.com/en/products/radio-controlled-

clock-rcc/antennas/

HR Electronic

GmbH

60716 (60 kHz)

60708 (77.5 kHz)

ø 10 x 60 mm

http://www.hrelectronic.com/

Hitachi Metals

AN-T702Sxx

AN-T702Mxx

AN-T702Lxx

19 x 5.5 x 6.3 mm

28 x 5 x 5 mm

50 x 5 x 5 mm

http://www.hitachi-

metals.co.jp/e/prod/prod06/p06_12.html

Premo

RCA-SMD-77A (77.5 kHz)

RCA-SMD-60A (60 kHz)

75 x 15 x 6.3 mm

http://www.grupopremo.com/

Sumida

ACL80A (40 kHz)

ø 10 x 80 mm

www.sumida.co.jp/jeita/XJA021.pdf

Note 6: Time Signal Software’s Pulse Width Recognition Limits

The typical output pulse width specifications are presented in the electrical characteristics section on page 3. Due

to process variations the typical output pulse width can differ from these. Additionally the output pulse widths can

vary even more depending on the receiving antenna signal strength versus noise and disturbance conditions.

That is why it is important that the time signal decoding software has appropriate tolerance limits for managing

the output pulse width variations successfully. The table 5 presents recommended software pulse width tolerance

limits for recognizing pulses of different time signals.

Table 5. Recommended Software Pulse Width Recognition Limits for Different Time Signals

Parameter

Symbol

Min

Max

Unit

DCF77 Output Pulses

40

140

130

250

ms

MSF Output Pulses

50

170

280

400

160

270

380

600

ms

WWVB Output Pulses

100

400

700

300

600

900

ms

JJY60 Output Pulses

100

400

700

300

600

900

ms

JJY40 Output Pulses

100

400

700

300

600

900

ms